| abstract |
(57) [Problem] To provide a photosensitive film having excellent plating sensitivity as well as having excellent sensitivity at the time of exposure and resolution of a resist pattern after development, and having a tough cured film without film breakage for tenting. Provided is a resin composition. SOLUTION: (a) The carboxyl group content is from 100 to 600 in acid equivalent, and the weight average molecular weight is from 20,000 to 500,000 binder resin composed of linear polymer, 20 to 20 90% by mass, (b) a photopolymerizable unsaturated compound containing a specific compound, 9 to 79% by mass, (c) an N-aryl-α-amino acid compound as a photopolymerization initiator, 0.005 to 0.5% by mass, (d) basic dye, 0.005 to 0.5 A photosensitive resin composition characterized by containing by mass is produced. |