发明名称 |
STABILISATION OF PHOTOCHROMIC COMPOUNDS, AND THE USE OF STABILISED PHOTOCHROMIC COMPOUNDS |
摘要 |
The stabilization of selected photochromic compounds, selected from certain fulgides and fulgimides, is made possible by associating with such compounds a clay mineral having an expanding crystal lattice, which can stabilize a selected photochromic compound in a higher-energy colored form. The stabilized photochromic compound may be one included in a coating composition, such as a paper coating composition, or may constitute or be incorporated in a filler for a papermaking furnish or for a plastics material. The stabilizer serves to maintain the photochromic compound in its higher-energy colored state or one of its higher-energy colored states, thereby tending to prevent deterioration of color as the photochromic compound converts to an uncolored or weakly colored lower-energy state. |
申请公布号 |
DE3266183(D1) |
申请公布日期 |
1985.10.17 |
申请号 |
DE19823266183 |
申请日期 |
1982.06.24 |
申请人 |
ENGLISH CLAYS LOVERING POCHIN & COMPANY LIMITED |
发明人 |
REID, PAUL IAN;WATERS, BRIAN ROGER |
分类号 |
G03C1/73;(IPC1-7):G03C1/733;C09B63/00;C09B67/00;C09K9/02 |
主分类号 |
G03C1/73 |
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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