| abstract |
Photosensitive resin composition, photosensitive resin cured product, photosensitive resin film, photosensitive resin film cured product, and optical waveguide obtained by using them, which are soluble in an alkaline aqueous solution and have good propagation loss in the visible light region I will provide a. (A) a photosensitive resin composition comprising a vinyl polymer having at least one functional group capable of chain polymerization in one molecule, (B) a polymerizable compound, and (C) a polymerization initiator, (C) is oxyphenylacetic acid 2- [2-oxo-2-phenylacetoxyethoxy] ethyl ester, oxyphenylacetic acid 2- (2-hydroxyethoxy) ethyl ester, and oligo {2-hydroxy-2-methyl-1 -[4- (1-methylvinyl) phenyl]} propanone is at least one selected from the group consisting of a photosensitive resin composition, a photosensitive resin cured product, a photosensitive resin film, a photosensitive resin film cured product, and these An optical waveguide obtained using |