Photosensitive resin composition and photosensitive element using the resin composition

摘要

A photosensitive resin composition and a photosensitive element using the resin composition with excellent sensitivity and adhesion as well as high resolution and plating resistance. A photosensitive resin composition comprises (A) a polymer carrying carboxyl groups, (B) a compound carrying at least one ethylene-based unsaturated group in the molecule, and (C) a photopolymerization initiator. Component (B) contains at least 60 wt.% of methacrylate (B1), carrying at least one ethylene-based unsaturated group, with respect to the total amount of component (B). The amount of component (C) is in the range of 0.01-20 weight parts per 100 weight parts of components (A) (B), and components (C) contains 2-5 weight parts of lophine dimer (C1) and 0.1-2.0 weight parts of triphenylphosphine (C2) per 100 weight parts of components (A) (B).