申请人:TOKUYAMA CORPORATION
公开号:EP0609061A2
公开(公告)日:1994-08-03
A polymerizable composition containing;
(A) 100 parts by weight of a vinylbenzyl compound of the formula (I),
wherein each of R¹ and R² is independently a halogen atom, each of h and i is independently 0, 1 or 2, each of X¹, X² and X³ is independently an oxygen atom or a sulfur atom, and each of j, k and m is 0 or 1, provided that when k is 0, j is 0, that when m is 0, each of j and k is 0, that when j is 0 and when each of k and m is 1, X¹ and X² cannot be sulfur atoms at the same time, and that when each of m, k and j is 1, X¹, X² and X³ cannot be sulfur atoms at the same time,
and
(B) 0.1 to 20 parts by weight of 2,4-diphenyl-4-methyl-1-pentene.
The polymerizable composition can give a molded article which is free from coloring in heat treatment, has sufficient properties as an ophthalmic lens such as a high refractive index, a high Abbe's number and a low specific gravity, is excellent in transparency, light resistance, heat resistance and impact resistance, and is therefore suitable as an organic glass such as an ophthalmic lens and a lens for an optical device.
一种可聚合的组合物,含有
(A) 100 份重量的式(I)乙烯基苄基化合物、
其中R¹和R²各自独立地为卤素原子,h和i各自独立地为0、1或2,X¹、X²和X³各自独立地为氧原子或硫原子,j、k和m各自为0或1,条件是当k为0时、当 j 为 0 且 k 和 m 均为 1 时,X¹ 和 X² 不能同时为硫原子;当 m、k 和 j 均为 1 时,X¹、X² 和 X³ 不能同时为硫原子、
和
(B) 0.1 至 20 重量份的 2,4-二苯基-4-甲基-1-戊烯。
这种可聚合组合物可以得到一种成型品,这种成型品在热处理时不着色,具有作为眼科透镜的充分特性,如高折射率、高阿贝数和低比重,在透明度、耐光性、耐热性和耐冲击性方面都很出色,因此适合作为有机玻璃,如眼科透镜和光学设备的透镜。