发明授权
US3973966A Photochromic composition containing a diphenyl dibenzochrom-3-ene
失效
含有二苯并苯并噻吩-3-烯的光致变色组合物
- 专利标题： Photochromic composition containing a diphenyl dibenzochrom-3-ene
- 专利标题（中）： 含有二苯并苯并噻吩-3-烯的光致变色组合物
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申请号： US468110申请日： 1974-05-08
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公开(公告)号： US3973966A公开(公告)日： 1976-08-10
- 发明人: John B. Flannery , Anita C. Van Laeken
- 申请人： John B. Flannery , Anita C. Van Laeken
- 申请人地址： CT Stamford
- 专利权人： Xerox Corporation
- 当前专利权人： Xerox Corporation
- 当前专利权人地址： CT Stamford
- 主分类号： C07D311/78
- IPC分类号： C07D311/78 ; C07D335/04 ; C07D345/00 ; C09K9/02 ; G03C1/72 ; G03C1/73 ; G03C1/52
摘要：
Disclosed are novel imaging imaging comprising photochromic compounds of the formula: ##SPC1##Wherein X is selected from the group consisting of oxygen, sulfur and selenium; and wherein R.sub.1 and R.sub.2 are individually selected from the group consisting of a substituted or unsubstituted lower alkyl of 1-8 carbon atoms or a substituted or unsubstituted phenyl group. The photochromic compounds are responsive to light in the visible and ultraviolet region of the spectrum.
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