申请人:Daiso Co., Ltd.
公开号:US05446173A1
公开(公告)日:1995-08-29
The present invention provides a cyclic sulfide compound represented by a general formula (I) ##STR1## (where R.sup.1 represents --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --O--CH.sub.2 --, --CH.sub.2 --O--, or --CH.sub.2 --S--). Polymerizable compositions for manufacturing optical products with this compound as their main component can be readily molded into plastic lenses which give superhigh refractive indices and high Abbe numbers or those which give high refractive indices and high Abbe number with low sp.grs. in addition thereto. The castings obtained from said polymerizable compositions are useful as plastic lenses for glasses, manifesting optical uniformity and being excellent in processability, transparency, and thermal, impact and light resistance. Further these polymerizable resin compositions are usable preferably as such optical products as prisms, optical fibers, optical disc substrates, color filters, or infrared absorption filters.
本发明提供了一种由通式(I)表示的环状硫化合物
(其中R.sup.1代表--CH.sub.2 --CH.sub.2 --,--CH.sub.2 --CH.sub.2 --CH.sub.2 --,--CH.sub.2 --O--CH.sub.2 --,--CH.sub.2 --O--或--CH.sub.2 --S--)。以该化合物为主要成分的可聚合组合物可轻松地制成塑料透镜,其具有超高折射率和高阿贝数,或者具有高折射率和高阿贝数与低比重。从该聚合组合物得到的铸件可用作眼镜的塑料透镜,表现出光学均匀性,并且在加工性、透明度、热性能、抗冲击和抗光性方面表现出色。此外,这些可聚合树脂组合物可优选用作棱镜、光纤、光盘基板、彩色滤光片或红外吸收滤光片等光学产品。