| 发明名称 |
STABILIZATION OF PHOTOGRAPHIC SPIROPYRAN COMPOUNDS |
| 摘要 |
Photographic images formed in a layer of photochromic material upon exposure to actinic light are stabilized so that a more permanent image is obtained by intimately mixing the photochromic material with a stabilizing agent of the formula:
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| 申请公布号 |
US3660094(A) |
申请公布日期 |
1972.05.02 |
| 申请号 |
USD3660094 |
申请日期 |
1970.06.22 |
| 申请人 |
GEVAERT-AGFA NV. |
发明人 |
ALBERT LUCIEN POOT |
| 分类号 |
C09K9/02;G03C1/00;G03C1/685;(IPC1-7):G03C5/24;G03C1/72 |
主分类号 |
C09K9/02 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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