| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical material, which is excellent in Abbe number provided in a middle-refractive-index material with a refractive index of around 1.6 and further has a refractive index of in a range of around 1.6 and a high Abbe number while utilizing homopolymerizability which is the feature of an episulphide compound which can be sufficiently cured even by a small amount of a catalyst. SOLUTION: The optical material is obtained by the polymerization curing of at least one or more compounds selected from heterocyclic amines, phosphines, quarternary ammonium salts, quarternary phosphonium salts, ternary sulphonium salts, secondary iodonium salts, peroxides and azo compounds, using a compound, as the curing catalyst, represented by formula (1), wherein X represents O(CH<SB>2</SB>)<SB>n</SB>, S(CH<SB>2</SB>)<SB>n</SB>or (CH<SB>2</SB>)<SB>n</SB>; n represents an integer of from zero to 6; and Y represents an acryloyl group, a methacryloyl group, an acryloyl group or a vinyl group. COPYRIGHT: (C)2009,JPO&INPIT
|
