Patent ID: 8557948
Filing Date: 2013-10-15
Classification: G03F

Abstract:
1. A photosensitive composition, at least containing: a carboxyl group-containing photosensitive polyurethane resin; a phosphorus-containing flame retardant; a polymerizable compound; and a photopolymerization initiator, wherein both a resin polymer of the carboxyl group-containing photosensitive polyurethane resin and the polymerizable compound do not contain a phosphorus atom, wherein the carboxyl group-containing photosensitive polyurethane resin has the weight average molecular weight from 2,000 to 60,000, the acid value from 20 mg KOH/g to 120 mg KOH/g, and the ethylenically unsaturated group equivalent from 0.05 mmol/g to 3.0 mmol/g, wherein the carboxyl group-containing photosensitive polyurethane resin has, in the side chain thereof, at least one functional group represented by any one of formulae (1) to (3): in which R in which R in which R wherein the at least one functional group represented by any one of formulae (1) to (3) does not link to a carbonyloxy-aliphatic group A (*) in a partial structure of the side chain, which partial structure links the group of any one of formulae (1) to (3) to the main chain of said polyurethane at the X, Y, or Z side, said carbonyloxy-aliphatic group A having a hydroxyl group or an acyloxy group substituted at the β position or γ position to the X, Y, or Z in an aliphatic moiety of the carbonyloxy-aliphatic group A and being linked to the structure of any one of formulae (1) to (3) which exists at the aliphatic moiety side (*) in the carbonyloxy-aliphatic group A.