Patent ID: 6552118
Filing Date: 2003-04-22
Classification: C08F,C09D,C09J,C09K,Y10S

Abstract:
A method for reducing viscosity of an adhesive curable composition comprising a vinyl polymer having at least one crosslinkable silyl group represented by the general formula (1):â€”[Si(R1)2-b(Y)bO]mâ€”Si(R2)3-a(Y)aâ€ƒâ€ƒ(1) wherein each R1 and R2 represents an alkyl group containing 1 to 20 carbon atoms, an aryl group containing 6 to 20 carbon atoms, an aralkyl group containing 7 to 20 carbon atoms or a triorganosiloxy group represented by the formula (Râ€²)3SiOâ€” wherein Râ€² represents a monovalent hydrocarbon group containing 1 to 20 carbon atoms and the plural Râ€² groups may be the same or different and, when there are two or more R1 or R2 groups, they may be the same or different; Y represents a hydroxyl group or a hydrolyzable group and, when there are two or more Y groups, they may be the same or different; a represents 0, 1, 2 or 3; b represents 0, 1 or 2; and m represents an integer of 0 to 19; with the condition that a, b and m satisfy the relation a+mb&gE;1, comprising adjusting a weight average molecular weight-to-number average molecular weight ratio of said vinyl polymer to less than 1.8 as determined by permeation chromatography.