Patent ID: 8114574
Filing Date: 2012-02-14
Classification: C08F,C08G,C08L,G03F

Abstract:
1. A photosensitive resin composition, comprising an acid group-containing vinyl ester resin (A) and a photopolymerization initiator (B) as essential components, wherein; the acid group-containing vinyl ester resin (A) has a multiple-branched molecular structure obtained by the following steps; Step (1): reacting a polybasic anhydride (a3) with an epoxy vinyl ester resin (v1) that is a reaction product of a novolac-type epoxy resin (a1), and a radically-polymerizable unsaturated-double bond-containing monocarboxylic acid (a2) to give an acid group-containing vinyl ester resin (v2), which is represented by the following general formula (2), Step (2); subsequently reacting a radically-polymerizable unsaturated-double bond-containing monoepoxy compound (a4) with an acid group in the acid-group containing vinyl ester resin (v2) obtained by the Step (1) to give a vinyl ester compound (v3), and Step (3): subsequently reacting a polybasic anhydride (3) with a secondary hydroxyl group in the vinyl ester compound (v3) obtained by the Step (2); and