Exhibit 4.1 SUPPLEMENTAL INDENTURE SUPPLEMENTAL INDENTURE (this "Supplemental Indenture"), dated as of April 2, 2004 among ISP Microcaps (U.S.) LLC (the "Guaranteeing Subsidiary"), a subsidiary of ISP Chemco Inc. (or its permitted successor), a...Supplemental Indenture • May 19th, 2004 • Isp Minerals Inc /Ny/ • Industrial organic chemicals • New York
April 15, 2004 To the Lenders party to the Credit Agreement referred to below, c/o the Administrative Agent thereunder Re: $475,000,000 Amended and Restated Credit Agreement dated as of April 2, 2004 Ladies and Gentlemen: Reference is made to the...Isp Minerals Inc /Ny/ • May 19th, 2004 • Industrial organic chemicals
amongCredit Agreement • May 19th, 2004 • Isp Minerals Inc /Ny/ • Industrial organic chemicals • New York
Exhibit 10.4 AMENDMENT NO. 1 TO PLEDGE AND SECURITY AGREEMENT AMENDMENT NO. 1 dated as of April 2, 2004 to the Pledge and Security Agreement (this "Amendment No. 1"), among ISP CHEMCO INC., ISP CHEMICALS INC., ISP TECHNOLOGIES INC. and ISP MINERALS...Pledge and Security Agreement • May 19th, 2004 • Isp Minerals Inc /Ny/ • Industrial organic chemicals
