Patent ID: 6071990
Filing Date: 2000-06-06
Classification: C08G,C09D

Abstract:
A composition consisting essentially of(A) an epoxy resin selected from the group consisting of(i) a product of the reaction of epichlorohydrin and bisphenol which product has the formula, ##STR5## wherein n is a number in the range of 0 to 15; (ii) a novolac resin which resin has the formula, ##STR6## wherein p is a number in the range of 1 to 2; and (iii) a cycloaliphatic compound which compound has the formula, ##STR7## (B) an amine functional silane of the formula,R.sup.4 NHR.sup.3 Si(R.sup.2).sub.b (OR.sup.1).sub.3-bwherein R.sup.1 and R.sup.2 are monovalent hydrocarbon groups of 1 to 4 carbons and b has a value of 0 or 1; R.sup.3 is a divalent hydrocarbon group of the formula,(CH.sub.2).sub.xwherein x is a positive integer of from 3 to 10; and R.sup.4 is selected from the group consisting of hydrogen, a monovalent hydrocarbon group of one to four carbons and a group of the formula,R.sup.5 NHR.sup.3wherein R.sup.3 is as defined above and R.sup.5 is hydrogen or a monovalent hydrocarbon group of 1 to 4 carbonswherein the ratio of the number of amino groups in the amine functional silane to the number of the epoxy groups in the epoxy resin is in the range of 1:1 to 5:1;(C) a catalytic amount of an organometallic compound; and(D) an organic solventwhich composition, when added to an OH-terminated polydiorganosiloxane, then applied to an EPDM-base rubber surface and cured thereon, forms an abrasion resistant film adherent to the surface and having good freeze-release properties.