Patent ID: 7282323

Claim:
A negative type photosensitive resin composition which comprises: (A) 100 parts of a polyamide having a structural unit represented by the following formula (1) and having a photopolymerizable unsaturated double bond, (B) 1-50 parts of a monomer having a photopolymerizable unsaturated double bond, (C) 1-20 parts of a photopolymerization initiator, and (D) 5-30 parts of a melamine resin, (where X is a 2-4 valent aromatic group and Y is a 2-4 valent aromatic group, i and j are integers of 0-2 and satisfy i+j=2, k is an integer of 2-150, R A is independently a monovalent organic group having a photopolymerizable unsaturated double bond and represented by the following formula (2) or a saturated aliphatic group of 1-4 carbon atoms, and R B is independently a hydrogen atom or a monovalent organic group having a photopolymerizable unsaturated double bond and represented by the following formula (3), with the proviso that when the total mol number of R B is assumed to be 100 mol %, not less than 10 mol % and not more than 50 mol % thereof is the monovalent organic group having a photopolymerizable unsaturated double bond and represented by the following formula (3), where R 8 is a hydrogen atom or an organic group of 1-3 carbon atoms, R 9 and R 10 are independently a hydrogen atom or an organic group of 1-3 carbon atoms, and q is an integer of 2-10, where R 3 is a hydrogen atom or an organic group of 1-3 carbon atoms, R 4 and R 5 are independently a hydrogen atom or an organic group of 1-3 carbon atoms, and m is an integer of 2-10).