Patent ID: 7727679

Claim:
An optical refractive index-modifying polymer composition comprising as a main component a polymer (A) which is a polymer of monomers including as an essential component an acrylic vinyl monomer represented by the following formula (1): CH 2 ═C(R 1 )—C(═O)O—R 2 ═CH 2 (1) wherein R 1 represents a hydrogen atom or a methyl group, R 2 represents a saturated or unsaturated hydrocarbon group having 1 to 20 carbon atoms, and the molecule may contain an additional hetero atom or a halogen atom, wherein the polymer (A) contains a remaining radical-polymerizable side-chain vinyl group in the molecule, and the composition comprises a thermally curable polymer (B) in an amount of 5 to 60 parts by weight per 100 parts by weight of the polymer (A), and wherein the acrylic vinyl monomer is a vinyl methacrylate, vinylethyl methacrylate, vinyloctyl methacrylate, vinylhexyl methacrylate, vinylbutyl methacrylate, vinyl acrylate, or vinylethyl acrylate.