EXHIBIT 10.206 LETTER AGREEMENT REGARDING RECEIVABLES PURCHASE AGREEMENT THIS LETTER AGREEMENT, dated as of January 18, 2002 (as amended, restated or otherwise modified from time to time, the "Letter Agreement") refers to the RECEIVABLES PURCHASE AGREEMENT, dated as of December 11, 1998 (as amended, amended and restated or otherwise modified from time to time, the "Agreement"), between and among CROMPTON CORPORATION (as successor by merger to Crompton & Knowles Corporation), as the Initial Collection Agent, CROMPTON MANUFACTURING COMPANY, INC. (f/k/a Uniroyal Chemical Company, Inc. ("Crompton Manufacturing")), UNIROYAL CHEMICAL EXPORT LTD. ("Export"), DAVIS STANDARD CORPORATION, PARATEC ELASTOMERS LLC ("Paratec"), CROMPTON CORPORATION and CROMPTON & KNOWLES COLORS, INCORPORATED, a Delaware corporation ("Colors") (each a "Seller" and collectively, the "Sellers"), CROMPTON & KNOWLES RECEIVABLES CORPORATION, a Delaware corporation ("Buyer"), and CROMPTON SALES COMPANY, INC., a Delaware corporation ("Crompton Sales") and ABN AMRO BANK N.V. (the "Agent"). W I T N E S S E T H: WHEREAS, the Sellers and the Buyer have previously entered into the Agreement pursuant to which the Sellers agreed to sell to Buyer, and Buyer agreed to buy from each of the Sellers, all of the Receivables and Related Assets generated by each such Seller; WHEREAS, pursuant to the Agreement, Buyer has transferred to ABN AMRO Bank N.V. as agent for Amsterdam Funding Corporation (as assignee of Windmill Funding Corporation) and the Committed Purchasers all of Buyer's right, title and interest in and to the Agreement, including, without limitation, interests in the Receivables sold to Buyer pursuant thereto; WHEREAS, Crompton Sales wishes to sell, transfer and assign Receivables and Related Purchased Assets to Buyer as though it were a Seller under the Agreement and Buyer wishes to purchase Receivables and Related Purchased Assets from Crompton Sales as though it were a Seller under the Agreement, all effective as of January 18, 2002; NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto, intending to be legally bound, agree as follows: SECTION 1. Defined Terms. Unless Otherwise amended by the terms of this Agreement, terms used in this Letter Agreement shall have the meanings assigned in the Agreement. SECTION 2. Adoption of Agreement. (a) Each of the parties hereto agrees that, effective as of January 18, 2002 (the "Effective Date"), Crompton Sales agrees to sell, transfer, assign, set over and otherwise convey to Buyer, and Buyer agrees to purchase from Crompton Sales, all Receivables and other Related Purchased Assets originated by Crompton Sales on the terms and conditions set forth in the Agreement, a copy of which is attached as Exhibit A hereto. (b) From and after the Effective Date, each of the parties hereto shall consider the term "Seller" to include Crompton Sales. In addition, from and after the Effective Date, Crompton Sales hereby agrees to be bound by all of the terms and conditions applicable to a Seller contained in the Agreement and the other Transaction Documents. In connection with the execution of this Letter Agreement, Crompton Sales and the Buyer agree to deliver each of the documents set forth in Section 4.1 of the Agreement, to the extent that such documents are applicable. (c) In connection with the execution and delivery of this Letter Agreement, Crompton Sales hereby makes, with respect to itself, the representations and warranties set forth in Section 5.1 of the Agreement. Crompton Sales is, and at all times since its incorporation, incorporated under the laws of the state of Delaware. The chief executive office of Crompton Sales is located in Greenwich, Connecticut with a mailing address at One American Lane, Greenwich, Connecticut 06831-2559 and has not been located anywhere else since its incorporation. Crompton Sales has no trade names and has not conducted business under any other name since its incorporation. SECTION 3. Execution in Counterparts, Effectiveness. This Letter Agreement may be executed by the parties hereto in several counterparts, each of which shall be executed by the parties hereto and be deemed an original and all of which shall constitute together but one and the same agreement. SECTION 4. Governing Law. THIS AGREEMENT SHALL BE CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REFERENCE TO CONFLICT OF LAW PRINCIPLES, AND THE OBLIGATIONS, RIGHTS AND REMEDIES OF THE PARTIES HEREUNDER SHALL BE DETERMINED IN ACCORDANCE W1TH THE LAWS OF THE STATE OF NEW YORK. [Signatures Follow] IN WITNESS WHEREOF, the Initial Collection Agent, the Sellers that, as of the date hereof, may sell Receivables and Related Purchased Assets to Buyer, Buyer, Crompton Sales, and the Agent have caused this Letter Agreement to be executed by their respective officers thereunto duly authorized as of the day and year first above written. CROMPTON CORPORATION (successor-in-interest to CK Witco), as Initial Collection Agent and as Seller By: Title: DAVIS STANDARD CORPORATION, as Seller By: Title: CROMPTON SALES COMPANY, INC., as Seller By: Title: Address: One American Lane Greenwich, Ct 06831-2559 CROMPTON & KNOWLES RECEIVABLES CORPORATION, as the Buyer By: Title: ABN AMRO BANK N.V., as Agent By: Title: EXHIBIT A RECEIVABLES PURCHASE AGREEMENT