| 发明名称 |
Birefringent transparent film and process for producing the same. |
| 摘要 |
<p>A transparent film having birefringence comprising an amorphous aromatic polymer as a main component is disclosed. The film is produced by uniaxially stretching a film of an amorphous aromatic polymer. The film exhibits high transparency, high heat resistance, and heat distortion resistance, and its birefringence does not undergo changes with time.</p> |
| 申请公布号 |
EP0338575(A2) |
申请公布日期 |
1989.10.25 |
| 申请号 |
EP19890107208 |
申请日期 |
1989.04.21 |
| 申请人 |
KANEGAFUCHI KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
FUJII, SADAO;TAKASE, JUNJI;KAWAI, HIDEKI |
| 分类号 |
B29C55/04;B29K67/00;B29K69/00;B29K105/32;B29L7/00;C08G63/18;C08G63/19;C08G63/193;C08J5/18;G02B5/30 |
主分类号 |
B29C55/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
