| abstract |
(A) a carboxylic acid-modified phenoxy resin, (B) a polymerizable compound, and (C) a resin composition for optical materials comprising a polymerization initiator, a resin film for optical materials comprising the resin composition, and these An optical waveguide having a core portion and / or a cladding layer formed by using the optical waveguide. Provided are a resin composition for an optical material that is excellent in heat resistance and transparency and is soluble in an alkaline aqueous solution, a resin film for an optical material comprising the resin composition, and an optical waveguide produced using these. |