发明授权
US5225525A Photochromic benzothioxanthone oxides, process for their preparation and
the use thereof
失效
光致变色苯并噻吩酮氧化物，其制备方法及其用途
- 专利标题： Photochromic benzothioxanthone oxides, process for their preparation and the use thereof
- 专利标题（中）： 光致变色苯并噻吩酮氧化物，其制备方法及其用途
-
申请号： US947647申请日： 1992-09-17
-
公开(公告)号： US5225525A公开(公告)日： 1993-07-06
- 发明人: Walter Fischer , Jurgen Finter , Heinz Spahni
- 申请人： Walter Fischer , Jurgen Finter , Heinz Spahni
- 申请人地址： NY Ardsley
- 专利权人： Ciba-Geigy Corporation
- 当前专利权人： Ciba-Geigy Corporation
- 当前专利权人地址： NY Ardsley
- 优先权： CHX2/91 19910103
- 主分类号： C07D335/04
- IPC分类号： C07D335/04 ; C09B57/14 ; G03C1/73 ; G03F7/09 ; G03F7/095 ; G11B7/244
摘要：
Compounds of formula I or III or mixtures thereof ##STR1## wherein R is unsubstituted C.sub.6 -C.sub.14 aryl or C.sub.6 -C.sub.14 aryl which is substituted by C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.12 alkoxy, C.sub.1 -C.sub.12 alkylthio, phenyl, benzyl, --CN, --CF.sub.3, halogen or --COOR.sub.3, x is 1 or 2, and R.sub.1 is H, linear or branched C.sub.1 -C.sub.12 alkyl, C.sub.2 -C.sub.12 alkenyl or C.sub.2 -C.sub.12 alkynyl, C.sub.7 -C.sub.16 aralkyl, C.sub.8 -C.sub.16 alkaralkyl, --CH.sub.2 COOR.sub.3 or C.sub.1 -C.sub.12 acyl, wherein R.sub.3 is H, C.sub.1 -C.sub.18 alkyl, cyclohexyl, cyclopentyl, phenyl, C.sub.1 -C.sub.12 alkylphenyl, benzyl or C.sub.1 -C.sub.12 alkylbenzyl, are reversible photochromic systems which can be used for contrast formation, light absorption or for the reversible optical storage of information.
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