| 摘要 |
PROBLEM TO BE SOLVED: To provide a cured substance which is produced by polymerizing and curing polymerizable compositions havingβ-epithiopropyl thio group orβ-epithiopropyl seleno group, and also is reduced in the generation of odor. SOLUTION: The polymerizable compositions comprise (1) (a) chain compound, branched compound, alicyclic compound, aromatic compound or heterocyclic compound havingβ-epithiopropyl thio group orβ-epithiopropyl seleno group and (b) fragrant materials, or (2) (a), (b) and (c) sulfur, in which the sulfur content in the polymerizable composition is≥20% by weight to≤64% by weight, and the optical material is obtained by polymerizing and curing a composition. COPYRIGHT: (C)2008,JPO&INPIT
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