| 发明名称 |
OPTICAL RESIN MATERIAL AND OPTICAL FILM |
| 摘要 |
An object of the present invention is to provide an optical resin material and an optical film, which are very small in both orientation birefringence and photoelastic birefringence, excellent in transparency, have few defects due to foreign substances, and are excellent in heat resistance and mechanical strength. Provided is an optical resin material containing a graft copolymer (C) obtained by polymerizing a vinyl-based monomer mixture (B) in the presence of a vinyl-based polymer (A) having at least one crosslinked structure layer, wherein the graft copolymer (C) has an orientation birefringence of −15×10−4 to 15×10−4 and a photoelastic constant of −10×10−12 to 10×10−12 Pa−1. |
| 申请公布号 |
US2016025898(A1) |
申请公布日期 |
2016.01.28 |
| 申请号 |
US201314782243 |
申请日期 |
2013.06.26 |
| 申请人 |
KANEKA CORPORATION |
发明人 |
KITAYAMA Fuminobu;MAIZURU Nobuyoshi;HATANO Keisuke |
| 分类号 |
G02B1/04;C08J5/18;G02B5/32 |
主分类号 |
G02B1/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An optical resin material comprising a graft copolymer (C) obtained by polymerizing a vinyl-based monomer mixture (B) in the presence of a vinyl-based polymer (A) having at least one crosslinked structure layer, wherein the graft copolymer (C) has an orientation birefringence of −15×10−4 to 15×10−4 and a photoelastic constant of −10×10−12 to 10×10−12 Pa−1. |
| 地址 |
Osaka JP |
