EXHIBIT 99.1

                            The Lubrizol Corporation

                             Underwriting Agreement

                                                              New York, New York
                                                              September 22, 2004

Citigroup Global Markets Inc.
As Representative of the several
   Underwriters,
c/o Citigroup Global Markets Inc.
388 Greenwich Street
New York, New York  10013

Ladies and Gentlemen:

      The Lubrizol Corporation, a corporation organized under the laws of Ohio
(the "Company"), proposes to sell to the several underwriters named in Schedule
II hereto (the "Underwriters"), for whom you (the "Representative") are acting
as representative, the number of Common Shares, without par value ("Common
Shares"), of the Company set forth in Schedule I hereto (said shares to be
issued and sold by the Company being hereinafter called the "Underwritten
Securities"). The Company also proposes to grant to the Underwriters an option
to purchase up to the number of additional shares of Common Shares set forth in
Schedule II hereto to cover over-allotments (the "Option Securities"; the Option
Securities, together with the Underwritten Securities, being hereinafter called
the "Securities"). Any reference herein to the Registration Statement, the Basic
Prospectus, any Preliminary Final Prospectus or the Final Prospectus shall be
deemed to refer to and include the documents incorporated by reference therein
pursuant to Item 12 of Form S-3 which were filed under the Securities Exchange
Act of 1934, as amended (the "Exchange Act"), on or before the Effective Date of
the Registration Statement or the issue date of the Basic Prospectus, any
Preliminary Final Prospectus or the Final Prospectus, as the case may be; and
any reference herein to the terms "amend", "amendment" or "supplement" with
respect to the Registration Statement, the Basic Prospectus, any Preliminary
Final Prospectus or the Final Prospectus shall be deemed to refer to and include
the filing of any document under the Exchange Act after the Effective Date of
the Registration Statement or the issue date of the Basic Prospectus, any
Preliminary Final Prospectus or the Final Prospectus, as the case may be, deemed
to be incorporated therein by reference. Certain terms used herein are defined
in Section 17 hereof.

      On April 16, 2004, the Company announced its agreement and plan of merger
to acquire Noveon International, Inc. ("Noveon"). The acquisition of Noveon was
completed on June 3, 2004.


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            1. Representations and Warranties. The Company represents and
warrants to, and agrees with, each Underwriter as set forth below in this
Section 1.

            (a) The Company meets the requirements for use of Form S-3 under the
      Securities Act of 1933, as amended (the "Act"), and has prepared and filed
      with the Commission a registration statement (the file number of which is
      set forth in Schedule I hereto) on Form S-3, including a related basic
      prospectus, for registration under the Act of the offering and sale of the
      Securities. The Company has filed one or more amendments thereto and a
      Preliminary Final Prospectus in accordance with Rules 415 and 424(b), each
      of which has previously been furnished to you. The Company will next file
      with the Commission one of the following: (1) a final prospectus
      supplement relating to the Securities in accordance with Rules 430A and
      424(b) or (2) a final prospectus supplement in accordance with Rules 415
      and 424(b). In the case of clause (1), the Company has included in such
      registration statement, as amended at the Effective Date, all information
      (other than Rule 430A Information) required by the Act and the rules
      thereunder to be included in such registration statement. As filed, such
      final prospectus supplement shall contain all Rule 430A Information,
      together with all other such required information, and, except to the
      extent the Representative shall agree in writing to a modification, shall
      be in all substantive respects in the form furnished to you prior to the
      Execution Time or, to the extent not completed at the Execution Time,
      shall contain only such specific additional information and other changes
      (beyond that contained in the Basic Prospectus and any Preliminary Final
      Prospectus) as the Company has advised you, prior to the Execution Time,
      will be included or made therein. The Registration Statement, at the
      Execution Time, meets the requirements set forth in Rule 415(a)(1)(x).

            (b) On the Effective Date, the Registration Statement did or will,
      and when the Final Prospectus is first filed (if required) in accordance
      with Rule 424(b) and on the Closing Date (as defined herein) and on any
      date on which Option Securities are purchased, if such date is not the
      Closing Date (a "settlement date"), the Final Prospectus (and any
      supplement thereto) will, comply in all material respects with the
      applicable requirements of the Act and the Exchange Act and the respective
      rules thereunder; on the Effective Date and at the Execution Time, the
      Registration Statement did not or will not contain any untrue statement of
      a material fact or omit to state any material fact required to be stated
      therein or necessary in order to make the statements therein not
      misleading; and, on the Effective Date, the Final Prospectus, if not filed
      pursuant to Rule 424(b), will not, and on the date of any filing pursuant
      to Rule 424(b) and on the Closing Date and any settlement date, the Final
      Prospectus (together with any supplement thereto) will not, include any
      untrue statement of a material fact or omit to state a material fact
      necessary in order to make the statements therein, in the light of the
      circumstances under which they were made, not misleading; provided,
      however, that the Company makes no representations or warranties as to the
      information contained in or omitted from the Registration Statement or the
      Final Prospectus (or any supplement thereto) in reliance upon and in
      conformity


                                                                               3

      with information furnished in writing to the Company by or on behalf of
      any Underwriter through the Representative specifically for inclusion in
      the Registration Statement or the Final Prospectus (or any supplement
      thereto).

            (c) Each of the Company and its subsidiaries has been duly
      incorporated and is validly existing as a corporation, limited liability
      company or partnership (as applicable) in good standing under the laws of
      the jurisdiction in which it is chartered or organized with full corporate
      power and authority to own or lease, as the case may be, and to operate
      its properties and conduct its business as described in the Final
      Prospectus, and is duly qualified to do business as a foreign corporation,
      limited liability company or partnership (as applicable) and is in good
      standing under the laws of each jurisdiction which requires such
      qualification, except to the extent that the failure to so qualify will
      not, singly or in the aggregate, have a material adverse effect on the
      condition (financial or otherwise), prospects, earnings, business or
      properties of the Company and its subsidiaries, taken as a whole, whether
      or not arising from transactions in the ordinary course of business.

            (d) All the outstanding shares of capital stock of each subsidiary
      of the Company have been duly and validly authorized and issued and are
      fully paid and nonassessable, and, except as otherwise set forth in the
      Final Prospectus, all outstanding shares of capital stock of the
      subsidiaries owned by the Company either directly or through wholly owned
      subsidiaries are free and clear of any perfected security interest or any
      other security interests, claims, liens or encumbrances.

            (e) This Agreement has been duly authorized, executed and delivered
      by the Company and, when executed and delivered by the Company, will
      constitute a legal, valid and binding instrument enforceable against the
      Company in accordance with its terms (subject, as to the enforcement of
      remedies, to applicable bankruptcy, reorganization, insolvency, moratorium
      or other laws affecting creditors' rights generally from time to time in
      effect and to general principles of equity).

            (f) No consent, approval, authorization, filing with or order of any
      court or governmental agency or body is required in connection with the
      transactions contemplated herein, except such as have been obtained under
      the Act and such as may be required under the blue sky laws of any
      jurisdiction in connection with the purchase and distribution of the
      Securities by the Underwriters in the manner contemplated herein and in
      the Prospectus.

            (g) Neither the issue and sale of the Securities nor the
      consummation of any other of the transactions herein contemplated nor the
      fulfillment of the terms hereof will conflict with, result in a breach or
      violation of, or imposition of any lien, charge or encumbrance upon any
      property or assets of the Company or any of its subsidiaries pursuant to,
      (i) the organizational documents of the Company or any of its
      subsidiaries, (ii) the terms of any indenture, contract, lease, mortgage,


                                                                               4

      deed of trust, note agreement, loan agreement or other agreement,
      obligation, condition, covenant or instrument to which the Company or any
      of its subsidiaries is a party or by which it is bound or to which its or
      their property is subject, or (iii) any statute, law, rule, regulation,
      judgment, order or decree applicable to the Company or any of its
      subsidiaries of any court, regulatory body, administrative agency,
      governmental body, arbitrator or other authority having jurisdiction over
      the Company or any of its subsidiaries or any of its or their properties.

            (h) The consolidated historical financial statements and schedules
      of the Company and its consolidated subsidiaries included or incorporated
      by reference in the Final Prospectus and the Registration Statement
      present fairly in all material respects the financial condition, results
      of operations and cash flows of the Company as of the dates and for the
      periods indicated, comply as to form with the applicable accounting
      requirements of the Act and have been prepared in conformity with
      generally accepted accounting principles applied on a consistent basis
      throughout the periods involved (except as otherwise noted therein). The
      selected financial data set forth under the captions "Selected Historical
      Consolidated Financial Data of Lubrizol", "Selected Historical
      Consolidated Financial Data of Noveon" and "Unaudited Pro Forma
      Consolidated Financial Information" in the Final Prospectus fairly
      present, on the basis stated in the Final Prospectus, the information
      included therein. The pro forma financial statements included or
      incorporated by reference in the Final Prospectus and the Registration
      Statement include assumptions that provide a reasonable basis for
      presenting the significant effects directly attributable to the
      transactions and events described therein, the related pro forma
      adjustments give appropriate effect to those assumptions, and the pro
      forma adjustments reflect the proper application of those adjustments to
      the historical financial statement amounts in the pro forma financial
      statements included or incorporated by reference in the Final Prospectus
      and the Registration Statement. The pro forma financial statements
      included in the Final Prospectus and the Registration Statement comply as
      to form in all material respects with the applicable accounting
      requirements of Regulation S-X under the Act and the pro forma adjustments
      have been properly applied to the historical amounts in the compilation of
      those statements. The pro forma segment data included in the Final
      Prospectus and the Registration Statement have been prepared on the same
      basis as that of the pro forma financial statements referred to in the
      immediately preceding sentence. The pro forma financial statements
      incorporated by reference in the Final Prospectus and the Registration
      Statement have been prepared in accordance with accounting principles
      generally accepted in the United States of America and the pro forma
      adjustments have been properly applied to the historical amounts in the
      compilation of those statements.

            (i) The consolidated historical financial statements and schedules
      of Noveon and its consolidated subsidiaries included or incorporated by
      reference in the Final Prospectus and the Registration Statement present
      fairly in all material respects the financial condition, results of
      operations and cash flows of Noveon as of the dates and for the periods
      indicated, comply as to form with the applicable


                                                                               5

      accounting requirements of the Act and have been prepared in conformity
      with generally accepted accounting principles applied on a consistent
      basis throughout the periods involved (except as otherwise noted therein).

            (j) No action, suit or proceeding by or before any court or
      governmental agency, authority or body or any arbitrator involving the
      Company or any of its subsidiaries or its or their property is pending or,
      to the knowledge of the Company after due investigation, threatened that
      (i) could reasonably be expected to have a material adverse effect on the
      performance of this Agreement or the consummation of any of the
      transactions contemplated hereby or (ii) could reasonably be expected to
      have a material adverse effect on the condition (financial or otherwise),
      prospects, earnings, business or properties of the Company and its
      subsidiaries, taken as a whole, whether or not arising from transactions
      in the ordinary course of business, except as set forth in or contemplated
      in the Final Prospectus (exclusive of any supplement thereto).

            (k) Each of the Company and its subsidiaries owns or leases all such
      properties as are necessary to the conduct of its operations as presently
      conducted.

            (l) Neither the Company nor any subsidiary is in violation or
      default of (i) any provision of its organizational documents, (ii) the
      terms of any indenture, contract, lease, mortgage, deed of trust, note
      agreement, loan agreement or other agreement, obligation, condition,
      covenant or instrument to which it is a party or by which it is bound or
      to which its property is subject, or (iii) any statute, law, rule,
      regulation, judgment, order or decree of any court, regulatory body,
      administrative agency, governmental body, arbitrator or other authority
      having jurisdiction over the Company or such subsidiary or any of its
      properties, as applicable.

            (m) Deloitte & Touche LLP, who have certified certain financial
      statements of the Company and its consolidated subsidiaries and delivered
      their report with respect to the audited consolidated financial statements
      and schedules included or incorporated by reference in the Final
      Prospectus, are independent public accountants with respect to the Company
      within the meaning of the Act and the applicable published rules and
      regulations thereunder.

            (n) Ernst & Young LLP, who have certified certain financial
      statements of Noveon and its consolidated subsidiaries and delivered their
      report with respect to the audited consolidated financial statements and
      schedules included or incorporated by reference in the Final Prospectus,
      were independent public accountants with respect to Noveon within the
      meaning of the Act and the applicable published rules and regulations
      thereunder.

            (o) The Company has filed all foreign, federal, state and local tax
      returns that are required to be filed or has requested extensions thereof
      (except in any case in which the failure so to file would not have a
      material adverse effect on the condition (financial or otherwise),
      prospects, earnings, business or properties of


                                                                               6

      the Company and its subsidiaries, taken as a whole, whether or not arising
      from transactions in the ordinary course of business, except as set forth
      in or contemplated in the Final Prospectus (exclusive of any supplement
      thereto)) and has paid all taxes required to be paid by it and any other
      assessment, fine or penalty levied against it, to the extent that any of
      the foregoing is due and payable, except for any such assessment, fine or
      penalty that is currently being contested in good faith or as would not
      have a material adverse effect on the condition (financial or otherwise),
      prospects, earnings, business or properties of the Company and its
      subsidiaries, taken as a whole, whether or not arising from transactions
      in the ordinary course of business, except as set forth in or contemplated
      in the Final Prospectus (exclusive of any supplement thereto).

            (p) No labor problem or dispute with the employees of the Company or
      any of its subsidiaries exists or is threatened or imminent, and the
      Company is not aware of any existing or imminent labor disturbance by the
      employees of any of its or its subsidiaries' principal suppliers,
      contractors or customers, that could have a material adverse effect on the
      condition (financial or otherwise), prospects, earnings, business or
      properties of the Company and its subsidiaries, taken as a whole, whether
      or not arising from transactions in the ordinary course of business,
      except as set forth in or contemplated in the Final Prospectus (exclusive
      of any supplement thereto).

            (q) The Company and each of its subsidiaries are insured by insurers
      of recognized financial responsibility against such losses and risks and
      in such amounts as are prudent and customary in the businesses in which
      they are engaged; all policies of insurance insuring the Company or any of
      its subsidiaries or their respective businesses, assets, employees,
      officers and directors are in full force and effect; the Company and its
      subsidiaries are in compliance with the terms of such policies and
      instruments in all material respects; and there are no material claims by
      the Company or any of its subsidiaries under any such policy or instrument
      as to which any insurance company is denying liability or defending under
      a reservation of rights clause; neither the Company nor any such
      subsidiary has been refused any insurance coverage sought or applied for;
      and neither the Company nor any such subsidiary has any reason to believe
      that it will not be able to renew its existing insurance coverage as and
      when such coverage expires or to obtain similar coverage from similar
      insurers as may be necessary to continue its business at a cost that would
      not have a material adverse effect on the condition (financial or
      otherwise), prospects, earnings, business or properties of the Company and
      its subsidiaries, taken as a whole, whether or not arising from
      transactions in the ordinary course of business, except as set forth in or
      contemplated in the Final Prospectus (exclusive of any supplement
      thereto).

            (r) No subsidiary of the Company is currently prohibited, directly
      or indirectly, from paying any dividends to the Company, from making any
      other distribution on such subsidiary's capital stock, from repaying to
      the Company any loans or advances to such subsidiary from the Company or
      from transferring any


                                                                               7

      of such subsidiary's property or assets to the Company or any other
      subsidiary of the Company, except as described in or contemplated by the
      Final Prospectus (exclusive of any supplement thereto).

            (s) The Company and its subsidiaries possess all licenses,
      certificates, permits and other authorizations issued by the appropriate
      federal, state or foreign regulatory authorities necessary to conduct
      their respective businesses except to the extent that the failure to so
      possess will not, singly or in the aggregate, have a material adverse
      effect on the condition (financial or otherwise), prospects, earnings,
      business or properties of the Company and its subsidiaries, taken as a
      whole, whether or not arising from transactions in the ordinary course of
      business, and neither the Company nor any such subsidiary has received any
      notice of proceedings relating to the revocation or modification of any
      such certificate, authorization or permit which, singly or in the
      aggregate, if the subject of an unfavorable decision, ruling or finding,
      would have a material adverse effect on the condition (financial or
      otherwise), prospects, earnings, business or properties of the Company and
      its subsidiaries, taken as a whole, whether or not arising from
      transactions in the ordinary course of business, except as set forth in or
      contemplated in the Final Prospectus (exclusive of any supplement
      thereto).

            (t) The Company and each of its subsidiaries maintain a system of
      internal accounting controls sufficient to provide reasonable assurance
      that (i) transactions are executed in accordance with management's general
      or specific authorizations; (ii) transactions are recorded as necessary to
      permit preparation of financial statements in conformity with generally
      accepted accounting principles and to maintain asset accountability; (iii)
      access to assets is permitted only in accordance with management's general
      or specific authorization; and (iv) the recorded accountability for assets
      is compared with the existing assets at reasonable intervals and
      appropriate action is taken with respect to any differences.

            (u) The Company has not taken, directly or indirectly, any action
      designed to or that would constitute or that might reasonably be expected
      to cause or result in, under the Exchange Act or otherwise, stabilization
      or manipulation of the price of any security of the Company to facilitate
      the sale or resale of the Securities.

            (v) The Company and its subsidiaries are (i) in compliance with any
      and all applicable foreign, federal, state and local laws and regulations
      relating to the protection of human health and safety, the environment or
      hazardous or toxic substances or wastes, pollutants or contaminants
      ("Environmental Laws"), (ii) have received and are in compliance with all
      permits, licenses or other approvals required of them under applicable
      Environmental Laws to conduct their respective businesses and (iii) have
      not received notice of any actual or potential liability under any
      Environmental Law, except where such non-compliance with Environmental
      Laws, failure to receive required permits, licenses or other approvals, or
      liability would not, individually or in the aggregate, have a material
      adverse change in the condition (financial or otherwise), prospects,
      earnings,


                                                                               8

      business or properties of the Company and its subsidiaries, taken as a
      whole, whether or not arising from transactions in the ordinary course of
      business, except as set forth in or contemplated in the Final Prospectus
      (exclusive of any supplement thereto). Except as set forth in the Final
      Prospectus and except to the extent the Company has accrued for estimated
      environmental liabilities as set forth in the Final Prospectus, neither
      the Company nor any of the subsidiaries has been named as a "potentially
      responsible party" under the Comprehensive Environmental Response,
      Compensation, and Liability Act of 1980, as amended.

            (w) In the ordinary course of its business, the Company periodically
      reviews the effect of Environmental Laws on the business, operations and
      properties of the Company and its subsidiaries, in the course of which it
      identifies and evaluates associated costs and liabilities (including,
      without limitation, any capital or operating expenditures required for
      clean-up, closure of properties or compliance with Environmental Laws, or
      any permit, license or approval, any related constraints on operating
      activities and any potential liabilities to third parties). On the basis
      of such review, the Company has reasonably concluded that such associated
      costs and liabilities would not, singly or in the aggregate, have a
      material adverse effect on the condition (financial or otherwise),
      prospects, earnings, business or properties of the Company and its
      subsidiaries, taken as a whole, whether or not arising from transactions
      in the ordinary course of business, except as set forth in or contemplated
      in the Final Prospectus (exclusive of any supplement thereto).

            (x) The minimum funding standard under Section 302 of the Employee
      Retirement Income Security Act of 1974, as amended, and the regulations
      and published interpretations thereunder ("ERISA"), has been satisfied by
      each "pension plan" (as defined in Section 3(2) of ERISA) which has been
      established or maintained by the Company and/or one or more of its
      subsidiaries, and the trust forming part of each such plan which is
      intended to be qualified under Section 401 of the Internal Revenue Code of
      1986, as amended, is so qualified; each of the Company and its
      subsidiaries has fulfilled its obligations, if any, under Section 515 of
      ERISA; none of the Company's subsidiaries (except for Noveon, Inc.)
      maintains or is required to contribute to a "welfare plan" (as defined in
      and subject to Section 3(1) of ERISA) which provides retiree or other
      post-employment welfare benefits or insurance coverage (other than
      "continuation coverage" (as defined in Section 602 of ERISA)); each
      pension plan and welfare plan established or maintained by the Company
      and/or one or more of its subsidiaries is in compliance in all material
      respects with the currently applicable provisions of ERISA; and neither
      the Company nor any of its subsidiaries has incurred or could reasonably
      be expected to incur any withdrawal liability under Section 4201 of ERISA,
      any liability under Section 4062, 4063, or 4064 of ERISA, or any other
      liability under Title IV of ERISA other than obligations to pay premiums
      to the Pension Benefit Guaranty Corporation.


                                                                               9

            (y) There is and has been no failure on the part of the Company or
      any of the Company's directors or officers, in their capacities as such,
      to comply in all material respects with any provision of the
      Sarbanes-Oxley Act of 2002 and the rules and regulations promulgated in
      connection therewith (the "Sarbanes-Oxley Act"), including Section 402
      related to loans and Sections 302 and 906 related to certifications.

            (z) The subsidiaries listed in Annex A hereto are the only
      significant subsidiaries of the Company as defined by Rule 1-02 of
      Regulation S-X (each, a "Significant Subsidiary"); provided, however, that
      the Company's financial data to be used in making a determination that a
      subsidiary is a Significant Subsidiary will be the pro forma data set
      forth in the Preliminary Final Prospectus.

            (aa) The Company and its subsidiaries own, possess, license or have
      other rights to use, on reasonable terms, all patents, patent
      applications, trade and service marks, trade and service mark
      registrations, trade names, copyrights, licenses, inventions, trade
      secrets, technology, know-how and other intellectual property
      (collectively, the "Intellectual Property") necessary for the conduct of
      the Company's business as now conducted or as proposed in the Final
      Prospectus to be conducted except to the extent that the failure to do so
      will not, singly or in the aggregate, have a material adverse effect on
      the condition (financial or otherwise), prospects, earnings, business or
      properties of the Company and its subsidiaries, taken as a whole, whether
      or not arising from transactions in the ordinary course of business.
      Except as set forth in the Final Prospectus (a) there are no rights of
      third parties to any such Intellectual Property; (b) there is no material
      infringement by third parties of any such Intellectual Property; (c) there
      is no pending or, to the Company's knowledge after due investigation,
      threatened action, suit, proceeding or claim by others challenging the
      Company's rights in or to any such Intellectual Property, and the Company
      is unaware of any facts which would form a reasonable basis for any such
      claim; (d) there is no pending, or to the Company's knowledge after due
      investigation, threatened action, suit, proceeding or claim by others
      challenging the validity or scope of any such Intellectual Property, and
      the Company is unaware of any facts which would form a reasonable basis
      for any such claim; (e) there is no pending or, to the Company's knowledge
      after due investigation, threatened action, suit, proceeding or claim by
      others that the Company infringes or otherwise violates any patent,
      trademark, copyright, trade secret or other proprietary rights of others,
      and the Company is unaware of any other fact which would form a reasonable
      basis for any such claim; (f) there is no U.S. patent or published U.S.
      patent application which contains claims that dominate or may dominate any
      Intellectual Property described in the Final Prospectus as being owned by
      or licensed to the Company or that interferes with the issued or pending
      claims of any such Intellectual Property; and (g) there is no prior art of
      which the Company is aware that may render any U.S. patent held by the
      Company invalid or any U.S. patent application held by the Company
      unpatentable which has not been disclosed to the U.S. Patent and Trademark
      Office, except to the extent that the matters


                                                                              10

      described in clauses (a) through (g) above of this paragraph will not,
      singly or in the aggregate, have a material adverse effect on the
      condition (financial or otherwise), prospects, earnings, business or
      properties of the Company and its subsidiaries, taken as a whole, whether
      or not arising from transactions in the ordinary course of business.

            (bb) Neither the Company nor any of its subsidiaries nor, to the
      knowledge of the Company after due investigation, any director, officer,
      agent, employee or affiliate of the Company or any of its subsidiaries is
      aware of or has taken any action, directly or indirectly, that would
      result in a violation by such persons of the Foreign Corrupt Practices Act
      of 1977, as amended, and the rules and regulations thereunder (the
      "FCPA"), including, without limitation, making use of the mails or any
      means or instrumentality of interstate commerce corruptly in furtherance
      of an offer, payment, promise to pay or authorization of the payment of
      any money, or other property, gift, promise to give, or authorization of
      the giving of anything of value to any "foreign official" (as such term is
      defined in the FCPA) or any foreign political party or official thereof or
      any candidate for foreign political office, in contravention of the FCPA;
      and the Company, its subsidiaries and, to the knowledge of the Company
      after due investigation, its affiliates have conducted their businesses in
      compliance with the FCPA and have instituted and maintain policies and
      procedures designed to ensure, and which are reasonably expected to
      continue to ensure, continued compliance therewith.

            (cc) Neither the Company nor any of its subsidiaries nor, to the
      knowledge of the Company after due investigation, any director, officer,
      agent, employee or affiliate of the Company or any of its subsidiaries is
      currently subject to any U.S. sanctions administered by the Office of
      Foreign Assets Control of the U.S. Treasury Department ("OFAC"); and the
      Company will not directly or indirectly use the proceeds of the offering,
      or lend, contribute or otherwise make available such proceeds to any
      subsidiary, joint venture partner or other person or entity, for the
      purpose of financing the activities of any person currently subject to any
      U.S. sanctions administered by OFAC.

            (dd) The agreements and instruments listed as exhibits to the
      Company's filings under Section 13(a), 13(c), 14 or 15(d), which filings
      are incorporated by reference in the Final Prospectus, are all of the
      material agreements and instruments binding on the Company that are
      required to be filed pursuant to Item 601(a)(4) and Item 601(a)(10) of
      Regulation S-K, promulgated pursuant to the Act.

      Any certificate signed by any officer of the Company and delivered to the
Representative or counsel for the Underwriters in connection with the offering
of the Securities shall be deemed a representation and warranty by the Company,
as to matters covered thereby, to each Underwriter.


                                                                              11

            2. Purchase and Sale. (a) Subject to the terms and conditions and in
reliance upon the representations and warranties herein set forth, the Company
agrees to sell to each Underwriter, and each Underwriter agrees, severally and
not jointly, to purchase from the Company, at a purchase price of $31.92 per
share, the amount of the Underwritten Securities set forth opposite such
Underwriter's name in Schedule II hereto.

            (b) Subject to the terms and conditions and in reliance upon the
representations and warranties herein set forth, the Company hereby grants an
option to the several Underwriters to purchase, severally and not jointly, up to
the Option Securities at the same purchase price per share as the Underwriters
shall pay for the Underwritten Securities. Said option may be exercised only to
cover over-allotments in the sale of the Underwritten Securities by the
Underwriters. Said option may be exercised in whole or in part at any time on or
before the 30th day after the date of the Final Prospectus upon written or
telegraphic notice by the Representative to the Company setting forth the number
of shares of the Option Securities as to which the several Underwriters are
exercising the option and the settlement date. The number of shares of the
Option Securities to be purchased by each Underwriter shall be the same
percentage of the total number of shares of the Option Securities to be
purchased by the several Underwriters as such Underwriter is purchasing of the
Underwritten Securities, subject to such adjustments as you in your absolute
discretion shall make to eliminate any fractional shares.

            3. Delivery and Payment. Delivery of and payment for the
Underwritten Securities and the Option Securities (if the option provided for in
Section 2(b) hereof shall have been exercised on or before the third Business
Day prior to the Closing Date) shall be made on the date and at the time
specified in Schedule I hereto or at such time on such later date not more than
three Business Days after the foregoing date as the Representative shall
designate, which date and time may be postponed by agreement between the
Representative and the Company or as provided in Section 9 hereof (such date and
time of delivery and payment for the Securities being herein called the "Closing
Date"). Delivery of the Securities shall be made to the Representative for the
respective accounts of the several Underwriters against payment by the several
Underwriters through the Representative of the purchase price thereof to or upon
the order of the Company by wire transfer payable in same-day funds to an
account specified by the Company. Delivery of the Underwritten Securities and
the Option Securities shall be made through the facilities of The Depository
Trust Company unless the Representative shall otherwise instruct.

            If the option provided for in Section 2(b) hereof is exercised after
the third Business Day prior to the Closing Date, the Company will deliver the
Option Securities (at the expense of the Company) to the Representative, at 388
Greenwich Street, New York, New York, 10013 on the date specified by the
Representative (which shall be within three Business Days after exercise of said
option) for the respective accounts of the several Underwriters, against payment
by the several Underwriters through the Representative of the purchase price
thereof to or upon the order of the Company by wire transfer payable in same-day
funds to an account specified by the Company. If


                                                                              12

settlement for the Option Securities occurs after the Closing Date, the Company
will deliver to the Representative on the settlement date for the Option
Securities, and the obligation of the Underwriters to purchase the Option
Securities shall be conditioned upon receipt of, supplemental opinions,
certificates and letters confirming as of such date the opinions, certificates
and letters delivered on the Closing Date pursuant to Section 6 hereof.

            4. Offering by Underwriters. It is understood that the several
Underwriters propose to offer the Securities for sale to the public as set forth
in the Final Prospectus.

            5. Agreements. The Company agrees with the several Underwriters
that:

            (a) Prior to the termination of the offering of the Securities, the
      Company will not file any amendment of the Registration Statement or
      supplement (including the Final Prospectus or any Preliminary Final
      Prospectus) to the Basic Prospectus or any Rule 462(b) Registration
      Statement unless the Company has furnished you a copy for your review
      prior to filing and will not file any such proposed amendment or
      supplement to which you reasonably object. Subject to the foregoing
      sentence, if the Registration Statement has become or becomes effective
      pursuant to Rule 430A, or filing of the Final Prospectus is otherwise
      required under Rule 424(b), the Company will cause the Final Prospectus,
      properly completed, and any supplement thereto to be filed in a form
      approved by the Representative with the Commission pursuant to the
      applicable paragraph of Rule 424(b) within the time period prescribed and
      will provide evidence satisfactory to the Representative of such timely
      filing. The Company will promptly advise the Representative (1) when the
      Final Prospectus, and any supplement thereto, shall have been filed (if
      required) with the Commission pursuant to Rule 424(b) or when any Rule
      462(b) Registration Statement shall have been filed with the Commission,
      (2) when, prior to termination of the offering of the Securities, any
      amendment to the Registration Statement shall have been filed or become
      effective, (3) of any request by the Commission or its staff for any
      amendment of the Registration Statement, or any Rule 462(b) Registration
      Statement, or for any supplement to the Final Prospectus or for any
      additional information, (4) of the issuance by the Commission of any stop
      order suspending the effectiveness of the Registration Statement or the
      institution or threatening of any proceeding for that purpose and (5) of
      the receipt by the Company of any notification with respect to the
      suspension of the qualification of the Securities for sale in any
      jurisdiction or the institution or threatening of any proceeding for such
      purpose. The Company will use its best efforts to prevent the issuance of
      any such stop order or the suspension of any such qualification and, if
      issued, to obtain as soon as possible the withdrawal thereof.

            (b) If, at any time when a prospectus relating to the Securities is
      required to be delivered under the Act, any event occurs as a result of
      which the Final Prospectus as then supplemented would include any untrue
      statement of a


                                                                              13

      material fact or omit to state any material fact necessary to make the
      statements therein in the light of the circumstances under which they were
      made not misleading, or if it shall be necessary to amend the Registration
      Statement or supplement the Final Prospectus to comply with the Act or the
      Exchange Act or the respective rules thereunder, the Company promptly will
      (1) notify the Representative of such event, (2) prepare and file with the
      Commission, subject to the second sentence of paragraph (a) of this
      Section 5, an amendment or supplement which will correct such statement or
      omission or effect such compliance and (3) supply any supplemented Final
      Prospectus to you in such quantities as you may reasonably request.

            (c) As soon as practicable, the Company will make generally
      available to its security holders and to the Representative an earnings
      statement or statements of the Company and its subsidiaries which will
      satisfy the provisions of Section 11(a) of the Act and Rule 158 under the
      Act.

            (d) The Company will furnish to the Representative and counsel for
      the Underwriters, without charge, signed copies of the Registration
      Statement (including exhibits thereto) and to each other Underwriter a
      copy of the Registration Statement (without exhibits thereto) and, so long
      as delivery of a prospectus by an Underwriter or dealer may be required by
      the Act, as many copies of each Preliminary Final Prospectus and the Final
      Prospectus and any supplement thereto as the Representative may reasonably
      request. The Company will pay the expenses of printing or other production
      of all documents relating to the offering.

            (e) The Company will arrange, if necessary, for the qualification of
      the Securities for sale under the laws of such jurisdictions as the
      Representative may designate, will maintain such qualifications in effect
      so long as required for the distribution of the Securities and will pay
      any fee of the National Association of Securities Dealers, Inc., in
      connection with its review of the offering; provided that in no event
      shall the Company be obligated to qualify to do business in any
      jurisdiction where it is not now so qualified or to take any action that
      would subject it to service of process in suits, other than those arising
      out of the offering or sale of the Securities, in any jurisdiction where
      it is not now so subject.

            (f) The Company will not, without the prior written consent of the
      Representative, offer, sell, contract to sell, pledge, or otherwise
      dispose of, (or enter into any transaction which is designed to, or might
      reasonably be expected to, result in the disposition (whether by actual
      disposition or effective economic disposition due to cash settlement or
      otherwise) by the Company or any affiliate of the Company or any person in
      privity with the Company or any affiliate of the Company), directly or
      indirectly, including the filing (or participation in the filing) of a
      registration statement with the Commission in respect of, or establish or
      increase a put equivalent position or liquidate or decrease a call
      equivalent position within the meaning of Section 16 of the Exchange Act,
      any other shares


                                                                              14

      of Common Shares or any securities convertible into, or exercisable, or
      exchangeable for, shares  of Common Shares; or publicly announce an
      intention to effect any such transaction, until the Business Day set forth
      in Schedule I hereto, provided, however, that the Company may issue and
      sell Common Shares pursuant to any employee stock option plan, stock
      ownership plan or dividend reinvestment plan of the Company in effect at
      the Execution Time and the Company may issue Common Shares issuable upon
      the conversion of securities or the exercise of warrants outstanding at
      the Execution Time.

            (g) The Company will comply in all material respects with all
      applicable securities and other applicable laws, rules and regulations,
      including, without limitation, the Sarbanes Oxley Act, and to use its best
      efforts to cause the Company's directors and officers, in their capacities
      as such, to comply in all material respects with such laws, rules and
      regulations, including, without limitation, the provisions of the Sarbanes
      Oxley Act.

            (h) The Company will not take, directly or indirectly, any action
      designed to or that would constitute or that might reasonably be expected
      to cause or result in, under the Exchange Act or otherwise, stabilization
      or manipulation of the price of any security of the Company to facilitate
      the sale or resale of the Securities.

            6. Conditions to the Obligations of the Underwriters. The
obligations of the Underwriters to purchase the Underwritten Securities and the
Option Securities, as the case may be, shall be subject to the accuracy of the
representations and warranties on the part of the Company contained herein as of
the Execution Time, the Closing Date and any settlement date pursuant to Section
3 hereof, to the accuracy of the statements of the Company made in any
certificates pursuant to the provisions hereof, to the performance by the
Company of its obligations hereunder and to the following additional conditions:

            (a) If the Registration Statement has not become effective prior to
      the Execution Time, unless the Representative agrees in writing to a later
      time, the Registration Statement will become effective not later than (i)
      5:00 PM New York City time on the date of determination of the public
      offering price, if such determination occurred at or prior to 3:00 PM New
      York City time on such date or (ii) 9:30 AM on the Business Day following
      the day on which the public offering price was determined, if such
      determination occurred after 3:00 PM New York City time on such date; if
      filing of the Final Prospectus, or any supplement thereto, is required
      pursuant to Rule 424(b), the Final Prospectus, and any such supplement,
      will be filed in the manner and within the time period required by Rule
      424(b); and no stop order suspending the effectiveness of the Registration
      Statement shall have been issued and no proceedings for that purpose shall
      have been instituted or threatened.

            (b) The Company shall have requested and caused Thompson Hine LLP,
      counsel for the Company, or subject to approval of the Representative, the
      general counsel of the Company, to have furnished to the Representative
      its opinion, dated the Closing Date and addressed to the Representative,
      to the effect that:


                                                                              15

                  (i) the Company has been duly incorporated and each of the
            Company and its domestic subsidiaries is validly existing as a
            corporation, limited liability company or partnership (as
            applicable) in good standing under the laws of the jurisdiction in
            which it is chartered or organized, with full corporate power and
            authority to own or lease, as the case may be, and to operate its
            properties and conduct its business as described in the Final
            Prospectus, and is duly qualified to do business as a foreign
            corporation, limited liability company or partnership (as
            applicable) and is in good standing under the laws of each
            jurisdiction which requires such qualification, except to the extent
            that the failure to be so will not, singly or in the aggregate, have
            a material adverse effect on the condition (financial or otherwise),
            prospects, earnings, business or properties of the Company and its
            subsidiaries, taken as a whole, whether or not arising from
            transactions in the ordinary course of business;

                  (ii) all the outstanding shares of capital stock of each
            Significant Subsidiary have been duly and validly authorized and
            issued and are fully paid and nonassessable, and, except as
            otherwise set forth in the Final Prospectus, all outstanding shares
            of capital stock of the Significant Subsidiaries owned by the
            Company either directly or through wholly owned subsidiaries are
            free and clear of any perfected security interest and, to the
            knowledge of such counsel, after due inquiry, any other security
            interest, claim, lien or encumbrance;

                  (iii) the Company's authorized equity capitalization is as set
            forth in the Final Prospectus; the capital stock of the Company
            conforms in all material respects to the description thereof
            contained in the Final Prospectus; the outstanding Common Shares
            have been duly and validly authorized and issued and are fully paid
            and nonassessable; the Securities have been duly and validly
            authorized, and, when issued and delivered to and paid for by the
            Underwriters pursuant to this Agreement, will be fully paid and
            nonassessable; the Securities are duly listed, and admitted and
            authorized for trading, subject to official notice of issuance, on
            the New York Stock Exchange; the certificates for the Securities are
            in valid and sufficient form; and the holders of outstanding shares
            of capital stock of the Company are not entitled to preemptive or
            other rights to subscribe for the Securities; and, except as set
            forth in the Final Prospectus, no options, warrants or other rights
            to purchase, agreements or other obligations to issue, or rights to
            convert any obligations into or exchange any securities for, shares
            of capital stock of or ownership interests in the Company are
            outstanding;

                  (iv) there is no pending and, to the knowledge of such
            counsel, no threatened action, suit or proceeding by or before any
            court or governmental agency, authority or body or any arbitrator
            involving the Company or any of its subsidiaries or its or their
            property of a character


                                                                              16

            required to be disclosed in the Registration Statement which is not
            adequately disclosed in the Final Prospectus, and there is no
            franchise, contract or other document of a character required to be
            described in the Registration Statement or Final Prospectus, or to
            be filed as an exhibit thereto, which is not described or filed as
            required; and the statements included or incorporated by reference
            in the Final Prospectus under the headings "Material United States
            Federal Tax Consequences for Non-U.S. Holders of Our Common Shares"
            and "Description of Common Shares", insofar as such statements
            summarize legal matters, agreements, documents or proceedings
            discussed therein, are accurate and fair summaries of such legal
            matters, agreements, documents or proceedings;

                  (v) the Registration Statement has become effective under the
            Act; any required filing of the Basic Prospectus, any Preliminary
            Final Prospectus and the Final Prospectus, and any supplements
            thereto, pursuant to Rule 424(b) has been made in the manner and
            within the time period required by Rule 424(b); to the knowledge of
            such counsel, no stop order suspending the effectiveness of the
            Registration Statement has been issued, no proceedings for that
            purpose have been instituted or threatened and the Registration
            Statement and the Final Prospectus (other than the financial
            statements and other financial and statistical information contained
            therein, as to which such counsel need express no opinion) comply as
            to form in all material respects with the applicable requirements of
            the Act and the Exchange Act and the respective rules thereunder;
            and such counsel has no reason to believe that on the Effective Date
            or the date the Registration Statement was last deemed amended the
            Registration Statement contained any untrue statement of a material
            fact or omitted to state any material fact required to be stated
            therein or necessary to make the statements therein not misleading
            or that the Final Prospectus as of its date and on the Closing Date
            included or includes any untrue statement of a material fact or
            omitted or omits to state a material fact necessary to make the
            statements therein, in the light of the circumstances under which
            they were made, not misleading (in each case, other than the
            financial statements and other financial and statistical information
            contained therein, as to which such counsel need express no
            opinion);

                  (vi) this Agreement has been duly authorized, executed and
            delivered by the Company;

                  (vii) the Company is not and, after giving effect to the
            offering and sale of the Securities and the application of the
            proceeds thereof as described in the Final Prospectus, will not be
            an "investment company" as defined in the Investment Company Act of
            1940, as amended;

                  (viii) no consent, approval, authorization, filing with or
            order of any court or governmental agency or body is required in
            connection with the


                                                                              17

            transactions contemplated herein, except such as have been obtained
            under the Act and such as may be required under the blue sky laws of
            any jurisdiction in connection with the purchase and distribution of
            the Securities by the Underwriters in the manner contemplated in
            this Agreement and in the Final Prospectus and such other approvals
            (specified in such opinion) as have been obtained;

                  (ix) neither the issue and sale of the Securities, nor the
            consummation of any other of the transactions herein contemplated
            nor the fulfillment of the terms hereof will conflict with, result
            in a breach or violation of, or imposition of any lien, charge or
            encumbrance upon any property or assets of the Company or its
            subsidiaries pursuant to, (i) the organizational documents of the
            Company or its domestic subsidiaries, (ii) the terms of any
            indenture, contract, lease, mortgage, deed of trust, note agreement,
            loan agreement or other agreement, obligation, condition, covenant
            or instrument to which the Company or its subsidiaries is a party or
            by which it is bound or to which its or their property is subject as
            required to be filed with the Commission in accordance with Item
            601(a)(4) and Item 601(a)(10) of Regulation S-K, promulgated
            pursuant to the Act, or (iii) any statute, law, rule, regulation,
            judgment, order or decree applicable to the Company or its
            subsidiaries of any court, regulatory body, administrative agency,
            governmental body, arbitrator or other authority having jurisdiction
            over the Company or its subsidiaries or any of its or their
            properties; and

                  (x) to the knowledge of such counsel, no holders of securities
            of the Company have rights to the registration of such securities
            under the Registration Statement.

      In rendering such opinion, such counsel may rely (A) as to matters
      involving the application of laws of any jurisdiction other than the State
      of Ohio or the Federal laws of the United States, to the extent they deem
      proper and specified in such opinion, upon the opinion of other counsel of
      good standing whom they believe to be reliable and who are satisfactory to
      counsel for the Underwriters and (B) as to matters of fact, to the extent
      they deem proper, on certificates of responsible officers of the Company
      and public officials. References to the Final Prospectus in this paragraph
      (b) shall also include any supplements thereto at the Closing Date.

            (c) The Representative shall have received from Shearman & Sterling
      LLP, counsel for the Underwriters, such opinion or opinions, dated the
      Closing Date and addressed to the Representative, with respect to the
      issuance and sale of the Securities, the Registration Statement, the Final
      Prospectus (together with any supplement thereto) and other related
      matters as the Representative may reasonably require, and the Company
      shall have furnished to such counsel such


                                                                              18

      documents as they request for the purpose of enabling them to pass upon
      such matters.

            (d) The Company shall have furnished to the Representative a
      certificate of the Company, signed by the Chairman of the Board or the
      President and the principal financial or accounting officer of the
      Company, dated the Closing Date, to the effect that the signers of such
      certificate have carefully examined the Registration Statement, the Final
      Prospectus, any supplements to the Final Prospectus and this Agreement and
      that:

                  (i) the representations and warranties of the Company in this
            Agreement are true and correct on and as of the Closing Date with
            the same effect as if made on the Closing Date and the Company has
            complied with all the agreements and satisfied all the conditions on
            its part to be performed or satisfied at or prior to the Closing
            Date;

                  (ii) no stop order suspending the effectiveness of the
            Registration Statement has been issued and no proceedings for that
            purpose have been instituted or, to the Company's knowledge after
            due investigation, threatened; and

                  (iii) since the date of the most recent financial statements
            included or incorporated by reference in the Final Prospectus
            (exclusive of any supplement thereto), there has been no material
            adverse effect on the condition (financial or otherwise), prospects,
            earnings, business or properties of the Company and its
            subsidiaries, taken as a whole, whether or not arising from
            transactions in the ordinary course of business, except as set forth
            in or contemplated in the Final Prospectus (exclusive of any
            supplement thereto).

            (e) The Representative shall have received on each of the date
      hereof and the Closing Date letters, dated the date hereof or the Closing
      Date, as the case may be, in form and substance satisfactory to the
      Representative, from (i) Deloitte & Touche LLP, independent or certified
      public accountants for the Company, and (ii) Ernst & Young LLP,
      independent public accountants for Noveon, containing statements and
      information of the type ordinarily included in accountants' "comfort
      letters" to underwriters with respect to the financial statements and
      certain financial information contained in or incorporated by reference
      into the Final Prospectus and the Registration Statement; provided that
      the letters delivered on the Closing Date shall use a "cut-off date" not
      earlier than the date hereof.

            (f) Subsequent to the Execution Time or, if earlier, the dates as of
      which information is given in the Registration Statement (exclusive of any
      amendment thereof) and the Final Prospectus (exclusive of any supplement
      thereto), there shall not have been (i) any change or decrease specified
      in the letter or letters referred to in paragraph (e) of this Section 6 or
      (ii) any change, or any


                                                                              19

      development involving a prospective change, in or affecting the condition
      (financial or otherwise), earnings, business or properties of the Company
      and its subsidiaries, taken as a whole, whether or not arising from
      transactions in the ordinary course of business, except as set forth in or
      contemplated in the Final Prospectus (exclusive of any supplement thereto)
      the effect of which, in any case referred to in clause (i) or (ii) above,
      is, in the sole judgment of the Representative, so material and adverse as
      to make it impractical or inadvisable to proceed with the offering or
      delivery of the Securities as contemplated by the Registration Statement
      (exclusive of any amendment thereof) and the Final Prospectus (exclusive
      of any supplement thereto).

            (g) Prior to the Closing Date, the Company shall have furnished to
      the Representative such further information, certificates and documents as
      the Representative may reasonably request.

            (h) Subsequent to the Execution Time, there shall not have been any
      decrease in the rating of any of the Company's debt securities by any
      "nationally recognized statistical rating organization" (as defined for
      purposes of Rule 436(g) under the Act) or any notice given of any intended
      or potential decrease in any such rating or of a possible change in any
      such rating that does not indicate the direction of the possible change.

            (i) The Securities have been listed and admitted and authorized for
      trading on the New York Stock Exchange, and satisfactory evidence of such
      actions shall have been provided to the Representative.

            (j) At the Execution Time, the Company shall have furnished to the
      Representative a letter substantially in the form of Exhibit A hereto from
      each executive officer and director of the Company addressed to the
      Representative.

            If any of the conditions specified in this Section 6 shall not have
been fulfilled when and as provided in this Agreement, or if any of the opinions
and certificates mentioned above or elsewhere in this Agreement shall not be in
reasonably satisfactory in form and substance to the Representative and counsel
for the Underwriters, this Agreement and all obligations of the Underwriters
hereunder may be canceled at, or at any time prior to, the Closing Date by the
Representative. Notice of such cancellation shall be given to the Company in
writing or by telephone or facsimile confirmed in writing.

            The documents required to be delivered by this Section 6 shall be
delivered at the office of Shearman & Sterling LLP, counsel for the
Underwriters, at 599 Lexington Avenue, New York, New York 10022, on the Closing
Date.

            7. Reimbursement of Underwriters' Expenses. If the sale of the
Securities provided for herein is not consummated because any condition to the
obligations of the Underwriters set forth in Section 6 hereof is not satisfied,
because of any termination pursuant to Section 10 hereof or because of any
refusal, inability or failure on the part of


                                                                              20

the Company to perform any agreement herein or comply with any provision hereof
other than by reason of a default by any of the Underwriters, the Company will
reimburse the Underwriters severally through the Representative on demand for
all out-of-pocket expenses (including reasonable fees and disbursements of
counsel) that shall have been incurred by them in connection with the proposed
purchase and sale of the Securities.

            8. Indemnification and Contribution. (a) The Company agrees to
indemnify and hold harmless each Underwriter, the directors, officers, employees
and agents of each Underwriter and each person who controls any Underwriter
within the meaning of either the Act or the Exchange Act against any and all
losses, claims, damages or liabilities, joint or several, to which they or any
of them may become subject under the Act, the Exchange Act or other Federal or
state statutory law or regulation, at common law or otherwise, insofar as such
losses, claims, damages or liabilities (or actions in respect thereof) arise out
of or are based upon any untrue statement or alleged untrue statement of a
material fact contained in the registration statement for the registration of
the Securities as originally filed or in any amendment thereof, or in the Basic
Prospectus, any Preliminary Final Prospectus or the Final Prospectus, or in any
amendment thereof or supplement thereto, or arise out of or are based upon the
omission or alleged omission to state therein a material fact required to be
stated therein or necessary to make the statements therein not misleading, and
agrees to reimburse each such indemnified party, as incurred, for any legal or
other expenses reasonably incurred by them in connection with investigating or
defending any such loss, claim, damage, liability or action; provided, however,
that the Company will not be liable in any such case to the extent that any such
loss, claim, damage or liability arises out of or is based upon any such untrue
statement or alleged untrue statement or omission or alleged omission made
therein in reliance upon and in conformity with written information furnished to
the Company by or on behalf of any Underwriter through the Representative
specifically for inclusion therein. This indemnity agreement will be in addition
to any liability which the Company may otherwise have.

            (b) Each Underwriter severally and not jointly agrees to indemnify
and hold harmless the Company, each of its directors, each of its officers who
signs the Registration Statement, and each person who controls the Company
within the meaning of either the Act or the Exchange Act, to the same extent as
the foregoing indemnity from the Company to each Underwriter, but only with
reference to written information relating to such Underwriter furnished to the
Company by or on behalf of such Underwriter through the Representative
specifically for inclusion in the documents referred to in the foregoing
indemnity. This indemnity agreement will be in addition to any liability which
any Underwriter may otherwise have. The Company acknowledges that (i) the
statements set forth in the last paragraph of the cover page of the Final
Prospectus regarding delivery of the Securities, (ii) the list of Underwriters
and their respective participation in the sale of the Securities in the Final
Prospectus, (iii) the sentences related to concessions and reallowances in the
Final Prospectus, and (iv) the paragraph related to stabilization, syndicate
covering transactions and penalty bids in any Preliminary Final Prospectus and
the Final Prospectus constitute the only information


                                                                              21

furnished in writing by or on behalf of the several Underwriters for inclusion
in any Preliminary Final Prospectus or the Final Prospectus.

            (c) Promptly after receipt by an indemnified party under this
Section 8 of notice of the commencement of any action, such indemnified party
will, if a claim in respect thereof is to be made against the indemnifying party
under this Section 8, notify the indemnifying party in writing of the
commencement thereof; but the failure so to notify the indemnifying party (i)
will not relieve it from liability under paragraph (a) or (b) above unless and
to the extent it did not otherwise learn of such action and such failure results
in the forfeiture by the indemnifying party of substantial rights and defenses
and (ii) will not, in any event, relieve the indemnifying party from any
obligations to any indemnified party other than the indemnification obligation
provided in paragraph (a) or (b) above. The indemnifying party shall be entitled
to appoint counsel of the indemnifying party's choice at the indemnifying
party's expense to represent the indemnified party in any action for which
indemnification is sought (in which case the indemnifying party shall not
thereafter be responsible for the fees and expenses of any separate counsel
retained by the indemnified party or parties except as set forth below);
provided, however, that such counsel shall be reasonably satisfactory to the
indemnified party. Notwithstanding the indemnifying party's election to appoint
counsel to represent the indemnified party in an action, the indemnified party
shall have the right to employ separate counsel (including local counsel), and
the indemnifying party shall bear the reasonable fees, costs and expenses of
such separate counsel if (i) the use of counsel chosen by the indemnifying party
to represent the indemnified party would present such counsel with a conflict of
interest, (ii) the actual or potential defendants in, or targets of, any such
action include both the indemnified party and the indemnifying party and the
indemnified party shall have reasonably concluded that there may be legal
defenses available to it and/or other indemnified parties which are different
from or additional to those available to the indemnifying party, (iii) the
indemnifying party shall not have employed counsel satisfactory to the
indemnified party to represent the indemnified party within a reasonable time
after notice of the institution of such action or (iv) the indemnifying party
shall authorize the indemnified party to employ separate counsel at the expense
of the indemnifying party. An indemnifying party will not, without the prior
written consent of the indemnified parties, settle or compromise or consent to
the entry of any judgment with respect to any pending or threatened claim,
action, suit or proceeding in respect of which indemnification or contribution
may be sought hereunder (whether or not the indemnified parties are actual or
potential parties to such claim or action) unless such settlement, compromise or
consent includes an unconditional release of each indemnified party from all
liability arising out of such claim, action, suit or proceeding.

            (d) In the event that the indemnity provided in paragraph (a), (b)
or (c) of this Section 8 is unavailable to or insufficient to hold harmless an
indemnified party for any reason, the Company and the Underwriters severally
agree to contribute to the aggregate losses, claims, damages and liabilities
(including legal or other expenses reasonably incurred in connection with
investigating or defending same) (collectively "Losses") to which the Company
and one or more of the Underwriters may be subject in such proportion as is
appropriate to reflect the relative benefits received by the Company


                                                                              22

on the one hand and by the Underwriters on the other from the offering of the
Securities; provided, however, that in no case shall any Underwriter (except as
may be provided in any agreement among underwriters relating to the offering of
the Securities) be responsible for any amount in excess of the underwriting
discount or commission applicable to the Securities purchased by such
Underwriter hereunder. If the allocation provided by the immediately preceding
sentence is unavailable for any reason, the Company and the Underwriters
severally shall contribute in such proportion as is appropriate to reflect not
only such relative benefits but also the relative fault of the Company on the
one hand and of the Underwriters on the other in connection with the statements
or omissions which resulted in such Losses as well as any other relevant
equitable considerations. Benefits received by the Company shall be deemed to be
equal to the total net proceeds from the offering (before deducting expenses)
received by it, and benefits received by the Underwriters shall be deemed to be
equal to the total underwriting discounts and commissions, in each case as set
forth on the cover page of the Final Prospectus. Relative fault shall be
determined by reference to, among other things, whether any untrue or any
alleged untrue statement of a material fact or the omission or alleged omission
to state a material fact relates to information provided by the Company on the
one hand or the Underwriters on the other, the intent of the parties and their
relative knowledge, access to information and opportunity to correct or prevent
such untrue statement or omission. The Company and the Underwriters agree that
it would not be just and equitable if contribution were determined by pro rata
allocation or any other method of allocation which does not take account of the
equitable considerations referred to above. Notwithstanding the provisions of
this paragraph (d), no person guilty of fraudulent misrepresentation (within the
meaning of Section 11(f) of the Act) shall be entitled to contribution from any
person who was not guilty of such fraudulent misrepresentation. For purposes of
this Section 8, each person who controls an Underwriter within the meaning of
either the Act or the Exchange Act and each director, officer, employee and
agent of an Underwriter shall have the same rights to contribution as such
Underwriter, and each person who controls the Company within the meaning of
either the Act or the Exchange Act, each officer of the Company who shall have
signed the Registration Statement and each director of the Company shall have
the same rights to contribution as the Company, subject in each case to the
applicable terms and conditions of this paragraph (d).

            9. Default by an Underwriter. If any one or more Underwriters shall
fail to purchase and pay for any of the Securities agreed to be purchased by
such Underwriter or Underwriters hereunder and such failure to purchase shall
constitute a default in the performance of its or their obligations under this
Agreement, the remaining Underwriters shall be obligated severally to take up
and pay for (in the respective proportions which the amount of Securities set
forth opposite their names in Schedule II hereto bears to the aggregate amount
of Securities set forth opposite the names of all the remaining Underwriters)
the Securities which the defaulting Underwriter or Underwriters agreed but
failed to purchase; provided, however, that in the event that the aggregate
amount of Securities which the defaulting Underwriter or Underwriters agreed but
failed to purchase shall exceed 10% of the aggregate amount of Securities set
forth in Schedule II hereto, the remaining Underwriters shall have the right to
purchase all, but shall not be under any


                                                                              23

obligation to purchase any, of the Securities, and if such nondefaulting
Underwriters do not purchase all the Securities, this Agreement will terminate
without liability to any nondefaulting Underwriter or the Company. In the event
of a default by any Underwriter as set forth in this Section 9, the Closing Date
shall be postponed for such period, not exceeding five Business Days, as the
Representative shall determine in order that the required changes in the
Registration Statement and the Final Prospectus or in any other documents or
arrangements may be effected. Nothing contained in this Agreement shall relieve
any defaulting Underwriter of its liability, if any, to the Company and any
nondefaulting Underwriter for damages occasioned by its default hereunder.

            10. Termination. This Agreement shall be subject to termination in
the absolute discretion of the Representative, by notice given to the Company
prior to delivery of and payment for the Securities, if at any time prior to
such time (i) trading in the Company's Common Shares shall have been suspended
by the Commission or the New York Stock Exchange or trading in securities
generally on the New York Stock Exchange shall have been suspended or limited or
minimum prices shall have been established on such Exchange, (ii) a banking
moratorium shall have been declared either by Federal or New York State
authorities or (iii) there shall have occurred any outbreak or escalation of
hostilities, declaration by the United States of a national emergency or war, or
other calamity or crisis the effect of which on financial markets is such as to
make it, in the sole judgment of the Representative, impractical or inadvisable
to proceed with the offering or delivery of the Securities as contemplated by
the Final Prospectus (exclusive of any supplement thereto).

            11. Representations and Indemnities to Survive. The respective
agreements, representations, warranties, indemnities and other statements of the
Company or its officers and of the Underwriters set forth in or made pursuant to
this Agreement will remain in full force and effect, regardless of any
investigation made by or on behalf of any Underwriter or the Company or any of
the officers, directors, employees, agents or controlling persons referred to in
Section 8 hereof, and will survive delivery of and payment for the Securities.
The provisions of Sections 7 and 8 hereof shall survive the termination or
cancellation of this Agreement.

            12. Notices. All communications hereunder will be in writing and
effective only on receipt, and, if sent to the Representative, will be mailed,
delivered or telefaxed to the Citigroup Global Markets Inc. General Counsel (fax
no.: (212) 816-7912) and confirmed to the General Counsel, Citigroup Global
Markets Inc., at 388 Greenwich Street, New York, New York, 10013, Attention:
General Counsel; or, if sent to the Company, will be mailed, delivered or
telefaxed to (440) 347-5219, 29400 Lakeland Boulevard, Wickliffe, Ohio 44092,
Attention: General Counsel.

            13. Successors. This Agreement will inure to the benefit of and be
binding upon the parties hereto and their respective successors and the
officers, directors, employees, agents and controlling persons referred to in
Section 8 hereof, and no other person will have any right or obligation
hereunder.


                                                                              24

            14. Applicable Law. This Agreement will be governed by and construed
in accordance with the laws of the State of New York applicable to contracts
made and to be performed within the State of New York.

            15. Counterparts. This Agreement may be signed in one or more
counterparts, each of which shall constitute an original and all of which
together shall constitute one and the same agreement.

            16. Headings. The section headings used herein are for convenience
only and shall not affect the construction hereof.

            17. Definitions. The terms which follow, when used in this
Agreement, shall have the meanings indicated.

            "Basic Prospectus" shall mean the prospectus referred to in Section
      1(a) above contained in the Registration Statement at the Effective Date.

            "Business Day" shall mean any day other than a Saturday, a Sunday or
      a legal holiday or a day on which banking institutions or trust companies
      are authorized or obligated by law to close in New York City.

            "Commission" shall mean the Securities and Exchange Commission.

            "Effective Date" shall mean each date and time that the Registration
      Statement, any post-effective amendment or amendments thereto and any Rule
      462(b) Registration Statement became or become effective.

            "Execution Time" shall mean the date and time that this Agreement is
      executed and delivered by the parties hereto.

            "Final Prospectus" shall mean the prospectus supplement relating to
      the Securities that was first filed pursuant to Rule 424(b) after the
      Execution Time, together with the Basic Prospectus.

            "Preliminary Final Prospectus" shall mean any preliminary prospectus
      supplement to the Basic Prospectus which describes the Securities and the
      offering thereof and is used prior to filing of the Final Prospectus and
      filed pursuant to Rule 424(b), together with the Basic Prospectus.

            "Registration Statement" shall mean the registration statement
      referred to in Section 1(a) above, including exhibits and financial
      statements, as amended at the Execution Time (or, if not effective at the
      Execution Time, in the form in which it shall become effective) and, in
      the event any post-effective amendment thereto or any Rule 462(b)
      Registration Statement becomes effective prior to the Closing Date, shall
      also mean such registration statement as so amended or such Rule 462(b)
      Registration Statement, as the case may be. Such term shall include


                                                                              25

      any Rule 430A Information deemed to be included therein at the Effective
      Date as provided by Rule 430A.

            "Rule 415", "Rule 424", "Rule 430A" and "Rule 462" refer to such
      rules under the Act.

            "Rule 430A Information" shall mean information with respect to the
      Securities and the offering thereof permitted to be omitted from the
      Registration Statement when it becomes effective pursuant to Rule 430A.

            "Rule 462(b) Registration Statement" shall mean a registration
      statement and any amendments thereto filed pursuant to Rule 462(b)
      relating to the offering covered by the registration statement referred to
      in Section 1(a) hereof.


                                                                              26

      If the foregoing is in accordance with your understanding of our
agreement, please sign and return to us the enclosed duplicate hereof, whereupon
this Agreement and your acceptance shall represent a binding agreement among the
Company and the several Underwriters.

Very truly yours,

The Lubrizol Corporation

By: _______________________________
Name:
Title:


                                                                              27

The foregoing Agreement is
hereby confirmed and
accepted as of the date
specified in Schedule I hereto.

Citigroup Global Markets Inc.

By:
   ________________________________
   Name:
   Title:

For itself and the other
several Underwriters, if any,
named in Schedule II to the
foregoing Agreement.



                                   SCHEDULE I

Underwriting Agreement dated September 22, 2004

Registration Statement No. 333-115662

Representative: Citigroup Global Markets Inc.

Title, Purchase Price and Description of Securities:

      Title: Common Shares, without par value

      Number of Shares to be sold by the Company: 13,400,000

      Price to Public per Share (include accrued dividends, if any): $33.25

      Price to Public -- total: $445,550,000

      Underwriting Discount per Share: $1.33

      Underwriting Discount -- total: $17,822,000

      Proceeds to Company per Share: $31.92

      Proceeds to Company -- total: $427,728,000

Closing Date, Time and Location: September 28, 2004 at 10:00 a.m. at 599
Lexington Avenue, New York, New York, 10022.

Type of Offering: Non-Delayed

Date referred to in Section 5(f) after which the Company may offer or sell
securities issued or guaranteed by the Company without the consent of the
Representative: 90 days after the date hereof



                                   SCHEDULE II



                                                      NUMBER OF UNDERWRITTEN                NUMBER OF OPTION
                 UNDERWRITERS                       SECURITIES TO BE PURCHASED          SECURITIES TO BE PURCHASED
                 ------------                       --------------------------          --------------------------
                                                                                  
Citigroup Global Markets Inc.                                7,370,000                          1,105,500

KeyBanc Capital Markets, a division of                       3,350,000                            502,500
McDonald Investments Inc.

Deutsche Bank Securities Inc.                                1,340,000                            201,000

ABN AMRO Rothschild LLC                                      1,340,000                            201,000
s
Total......................                                 13,400,000                          2,010,000




                                                                       EXHIBIT A

                            FORM OF LOCK-UP AGREEMENT

            [Letterhead of executive officer or director of Company]

                            The Lubrizol Corporation
                        Public Offering of Common Shares

                                                                          , 2004

Citigroup Global Markets Inc.
As Representative of the several Underwriters,
c/o Citigroup Global Markets Inc.
388 Greenwich Street
New York, New York 10013

Ladies and Gentlemen:

            This letter is being delivered to you in connection with the
proposed Underwriting Agreement (the "Underwriting Agreement"), between The
Lubrizol Corporation, an Ohio corporation (the "Company"), and you as
representative of a group of Underwriters named therein, relating to an
underwritten public offering of Common Shares, without par value (the "Common
Shares"), of the Company.

            In order to induce you and the other Underwriters to enter into the
Underwriting Agreement, the undersigned will not, without the prior written
consent of Citigroup Global Markets Inc., offer, sell, contract to sell, pledge
or otherwise dispose of, (or enter into any transaction which is designed to, or
might reasonably be expected to, result in the disposition (whether by actual
disposition or effective economic disposition due to cash settlement or
otherwise) by the undersigned or any affiliate of the undersigned or any person
in privity with the undersigned or any affiliate of the undersigned), directly
or indirectly, including the filing (or participation in the filing) of a
registration statement with the Securities and Exchange Commission in respect
of, or establish or increase a put equivalent position or liquidate or decrease
a call equivalent position within the meaning of Section 16 of the Securities
Exchange Act of 1934, as amended, and the rules and regulations of the
Securities and Exchange Commission promulgated thereunder with respect to, any
shares of capital stock of the Company or any securities convertible into or
exercisable or exchangeable for such capital stock, or publicly announce an
intention to effect any such transaction, for a period of 90 days after the date
of the Underwriting Agreement, other than shares of Common Shares disposed of as
bona fide gifts approved by Citigroup Global Markets Inc.



2

            If for any reason the Underwriting Agreement shall be terminated
prior to the Closing Date (as defined in the Underwriting Agreement), the
agreement set forth above shall likewise be terminated.

                                  Yours very truly,

                                  [Signature of executive officer or director]

                                  [Name and address of executive officer or
                                  director]



                                                                         ANNEX A

            LIST OF SIGNIFICANT SUBSIDIARIES PURSUANT TO SECTION 1(z)

DOMESTIC SIGNIFICANT SUBSIDIARIES                       JURISDICTION
CPI Engineering Services, Inc.                          State of Michigan
Lubrizol Overseas Trading Corporation                   State of Delaware
Noveon International, Inc.                              State of Delaware
Noveon, Inc.                                            State of Delaware

FOREIGN SIGNIFICANT SUBSIDIARIES
Europe Chemical Holdings C.V.                           The Netherlands
Lubrizol Europe B.V.                                    The Netherlands
Lubrizol France S.A.S.                                  France