Patent ID: 9574106
Date: 2017-02-21
CPC Classifications: C08F,C09D,G02B

Claim:
1. An optical element material obtained by a process consisting of curing a resin composition consisting of: a photocurable monomer (A) having formula (1): a photocurable monomer (B) having formula (2): a photopolymerization initiator (C); a viscosity-adjusting agent (D) other than a carbazole skeleton-containing polymer, said viscosity-adjusting agent (D) selected from the group consisting of a resin containing an aromatic ring, a resin containing a non-aromatic cyclic structure, a resin containing a hydroxyl group, and a resin containing a protected hydroxyl group; optionally a solvent (G); optionally a photocurable monomer (H) other than the photocurable monomer (A); optionally a sensitizer; optionally a coloring agent; optionally a leveling agent; optionally at least one additive selected from the group consisting of an antifoaming agent, an antioxidant, a heat-resistant stabilizer, a weather-resistant stabilizer, and a light stabilizer; and optionally an adhesion-imparting agent, wherein: the resin composition has a weight ratio of the photocurable monomer (A) to the photocurable monomer (B) in a range of 30/70 to 85/15; the resin composition has a content of the photopolymerization initiator (C) in a range of 0.01 to 30 parts by weight per 100 parts by weight of a total weight of the photocurable monomer (A) and the photocurable monomer (B); the resin composition has a content of the viscosity-adjusting agent (D) in a range of 0.1 to 100 parts by weight per 100 parts by weight of the total weight of the photocurable monomer (A) and the photocurable monomer (B); the resin composition has a shrinkage on curing of at most 4.5% at the time of curing; R R R R