Patent ID: 11921424
Assignee: HITACHI CHEMICAL COMPANY, LTD. (FIPAS)
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A photosensitive resin composition comprising:
an acid-modified vinyl group-containing epoxy resin (A);
a photopolymerization initiator (B);
a photopolymerization sensitizer containing a benzophenone compound (C); and
a photopolymerizable compound (D), wherein
the acid-modified vinyl group-containing epoxy resin (A) comprises at least one acid-modified vinyl group-containing epoxy resin (A1) synthesized using a bisphenol novolak type epoxy resin (a1) and at least one acid-modified vinyl group-containing epoxy resin (A2) synthesized using an epoxy resin (a2) different from the epoxy resin (a1), and
the acid-modified vinyl group-containing epoxy resin (A1) is a resin obtained by reacting a resin (A1′) obtained by reacting the epoxy resin (a1) with a vinyl group-containing monocarboxylic acid (b) with a saturated or unsaturated group-containing polybasic acid anhydride (c), and the acid-modified vinyl group-containing epoxy resin (A2) is a resin obtained by reacting a resin (A2′) obtained by reacting each of the epoxy resins (a2) with a vinyl group-containing monocarboxylic acid (b) with a saturated or unsaturated group-containing polybasic acid anhydride (c);
wherein the epoxy resin (a2) is at least one selected from the group consisting of a novolak type epoxy resin, a bisphenol A type epoxy resin, a bisphenol F type epoxy resin, and a triphenolmethane type epoxy resin.