Patent ID: 9223212
Filing Date: 2015-12-29
Classification: C08G,G03F

Abstract:
1. An alkali-developing photosensitive resin composition, comprising: a polycarboxylic acid resin (A) obtained by reacting a reaction product (ab) of a bifunctional bisphenol epoxy resin (a) having epoxy groups at both terminals thereof and having an epoxy equivalent of 600 to 1,300 g/eq. with a monocarboxylic acid compound (b) having an alcoholic hydroxyl group, with a polybasic acid anhydride (c); an epoxy resin (B) having two or more epoxy groups in one molecule thereof; and a photoacid generating agent (C), wherein an addition ratio of the monocarboxylic acid compound (b) to 1 equivalent of the epoxy group of the epoxy resin (a) is 80 equivalent % or higher; and an addition ratio of the polybasic acid anhydride to 1 equivalent of a primary hydroxyl group of the reaction product (ab) is 80 equivalent % or higher, and wherein said monocarboxylic acid compound (b) is at least one member selected from the group consisting of monomethylolpropionic acid, dimethylolpropionic acid, monomethylolbutanoic acid and dimethylolbutanoic acid.