Patent ID: 6200732
Filing Date: 2001-03-13
Classification: B33Y,G03F

Abstract:
A photocurable resin composition comprising:(A) a urethane acrylate represented by the following formula (I) ##STR8##wherein R.sup.1 is a hydrogen atom or a methyl group, A is a trivalent organic group which remains after all the hydroxyl groups are removed from a triol, D is a divalent or trivalent organic group which remains after all the isocyanate groups are removed from a diisocyanate or triisocyanate, E is a group represented by the formula --(CH.sub.2 CH.sub.2 O).sub.s -- wherein s is a numeral of 1 to 4 ##STR9##wherein t is a numeral of 1 to 4 or ##STR10##wherein u and v are each a numeral of 1 to 3, provided that u+v is 2 to 4, R.sup.2 is a hydrogen atom or an alkyl group, p is 2 and q is 1 or 2 , and r is 3 or 4, provided that at least one of R.sup.1 ' s is a methyl group;(B) a radical, polymerizable compound different from the above urethane acrylate; and(C) a photopolymerization initiator, the weight ratio of the urethane acrylate (A) to the radical polymerizable compound (B) being 80:20 to 10:90, further containing at least one filler selected from the group consisting of solid fine particles and whiskers.