| 发明名称 |
UNSATURATED PHOTOCHROMIC INDOLINO-SPIROPYRAN MONOMERS AND POLYMERS PREPARED THEREFROM |
| 摘要 |
Photochromic unsaturated monomeric indolino-spiropyrans and the polymers and copolymers prepared therefrom are described. These photochromic materials in a light-sensitive photographic system containing a photohardening polymeric system provide nonfading photographic images.
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| 申请公布号 |
US3642484(A) |
申请公布日期 |
1972.02.15 |
| 申请号 |
USD3642484 |
申请日期 |
1969.09.11 |
| 申请人 |
GEVAERT-AGFA NV. |
发明人 |
ALBERT LUCIEN POOT;GERARD ALBERT DELZENNE |
| 分类号 |
C09K9/02;C07D491/107;C08F20/00;C08F20/34;G03C1/685;G03C1/73;G03F7/012;G03F7/038;(IPC1-7):F21V9/10;G02B5/20 |
主分类号 |
C09K9/02 |
| 代理机构 |
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