| 摘要 |
PROBLEM TO BE SOLVED: To improve the oxidation resistance, light resistance and hue of a high reflective index optical material comprising a sulfur-containing compound. SOLUTION: This sulfur-containing compound having one or more structures represented by formula (1) [R<SP>1</SP>is a 0 to 10C hydrocarbon; R<SP>2</SP>, R<SP>3</SP>and R<SP>4</SP>are each a 1 to 10C hydrocarbon or H; Y is O, S, Se, or Te; (l) is 0 to 2; (m) is 1 to 5; (n) is 0 to 5] in the molecule is characterized by having a chlorine content of≤0.1 wt. %. COPYRIGHT: (C)2004,JPO |
