发明名称 |
Process for making a high-refractivity plastic lens resin. |
摘要 |
<p>Disclosed herein is a colorless transparent plastic lens having high refractivity and low dispersion. The lens is light, has heat resistance sufficient for post processing, and is excellent in grinding machinability and impact resistance. It is made of a sulfur-containing urethane resin, which is a polymer of a specific polythiol and a particular polyisocyanate of at least bifunctionality.</p> |
申请公布号 |
EP0268896(A2) |
申请公布日期 |
1988.06.01 |
申请号 |
EP19870116289 |
申请日期 |
1987.11.05 |
申请人 |
MITSUI TOATSU CHEMICALS, INCORPORATED |
发明人 |
KANEMURA, YOSHINOBU;SASAGAWA, KATSUYOSHI;IMAI, MASAO;NAGATA, TERUYUKI;KAJIMOTO, NOBUYUKI |
分类号 |
C08G18/30;C08G18/32;C08G18/38;G02B1/04 |
主分类号 |
C08G18/30 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|