| abstract |
PURPOSE: A substantially colorless and transparent optical resin object having a high refractive index (≥ about 1.6), comprising a polymer mainly consisting of a specified monomer having a thioether group. n CONSTITUTION: A thioether group-containing monomer (A) of formula I (wherein R 1 is H or methyl, R 2 is H, alkyl, alkoxy, amino, halogen, sulfoxy, sulfonate, aryl, or heterocyclic group, Ar is arylene), e.g., phenyl thioacrylate is copolymerized with (B) other ethylenically unsaturated monomer (e.g., benzyl methacrylate, styrene, or methylstyrene), and the obtained copolymer (component A content ≥ about 50wt%) to obtain an optical resin object such as an optical element. n COPYRIGHT: (C)1985,JPO&Japio |