UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of report (Date of earliest event reported) February 1, 2006 ------------------------- ISP CHEMCO INC. - -------------------------------------------------------------------------------- (Exact Name of Registrant as Specified in Its Charter) Delaware - -------------------------------------------------------------------------------- (State or Other Jurisdiction of Incorporation) 333-17827-01 51-0382622 - -------------------------------------------------------------------------------- (Commission File Number) (IRS Employer Identification No.) 300 Delaware Avenue Suite 303 Wilmington, Delaware 19801 - -------------------------------------------------------------------------------- (Address of Principal Executive Offices) (Zip Code) (302) 427-5818 - -------------------------------------------------------------------------------- (Registrant's Telephone Number, Including Area Code) Not Applicable - -------------------------------------------------------------------------------- (Former Name or Former Address, if Changed Since Last Report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): |_| Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |_| Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |_| Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |_| Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ADDITIONAL REGISTRANTS Address, including zip code and telephone number, State or other including area code, of jurisdiction of Registration No./I.R.S. registrant's principal Exact name of registrant incorporation or Employer Identification No. executive offices as specified in its charter organization -------------------------- ------------------ - --------------------------- ------------ ISP Chemicals Inc. Delaware 333-70144-08/ Route 95 Industrial Area, 22-3807357 P.O. Box 37 Calvert City, KY 42029 (270) 395-4165 ISP Minerals Inc. Delaware 333-70144-07/ 34 Charles Street 22-3807370 Hagerstown, MD 21740 (301) 733-4000 ISP Technologies Inc. Delaware 333-70144-09/ 4501 Attwater Avenue and 22-3807372 State Highway 146 Texas City, TX 77590 (409) 945-3411 2 ITEM 8.01. OTHER INFORMATION On February 1, 2006, International Specialty Holdings Inc. ("Holdings") and ISP Chemco Inc., ISP Chemicals Inc., ISP Minerals Inc. and ISP Technologies Inc. (collectively, the "Chemco Purchasers," and, together with Holdings, the "Purchasers") announced that, in connection with their previously announced tender offers to purchase for cash all of the 10.625% Senior Secured Notes due 2009 issued by Holdings (the "Holdings Notes") and all of the 10.25% Senior Subordinated Notes due 2011 issued by the Chemco Purchasers (the "Chemco Notes," and, together with the Holdings Notes, the "Notes") and the related consent solicitations, as of 5 P.M. New York City time on February 1, 2006, holders of a majority in aggregate principal amount of each of the Holdings Notes and the Chemco Notes had validly tendered and not withdrawn their Notes and had provided their consents to effect the proposed amendments to the indentures governing each of the Holdings Notes and the Chemco Notes. The amendments will not become operative until the Purchasers accept the Holdings Notes and the Chemco Notes for purchase pursuant to their respective tender offers. The Chemco Purchasers also announced that the total consideration for the Chemco Notes validly tendered in the tender offer will be $1,069.32 for each $1,000.00 principal amount of the Chemco Notes purchased pursuant to the tender offer, plus accrued and unpaid interest up to, but not including, the date of payment for the Chemco Notes. The full text of the Purchasers' press release is attached hereto as Exhibit 99.1 and incorporated herein by reference. ITEM 9.01 FINANCIAL STATEMENT AND EXHIBITS (d) Exhibits The following is filed as an exhibit to this report: Number Description ------ ----------- 99.1 Press Release, dated February 1, 2006 3 SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrants have duly caused this Report to be signed on their behalf by the undersigned hereunto duly authorized. ISP CHEMCO INC. ISP CHEMICALS INC. ISP MINERALS INC. ISP TECHNOLOGIES INC. Dated: February 3, 2006 By: /s/ Roger J. Cope ------------------------------------------ Name: Roger J. Cope Title: Senior Vice President and Interim Chief Financial Officer (Principal Financial Officer) 4 EXHIBIT INDEX Exhibit No. Description ----------- ----------- 99.1 Press Release dated February 1, 2006 5