申请人:Otsuka Kagaku Kabushiki Kaisha
公开号:US05236958A1
公开(公告)日:1993-08-17
The present invention provides a photochromic compound of the formula (Ia) ##STR1## wherein R.sup.1 is a C.sub.1 -C.sub.20 alkyl group or an aralkyl group; R.sup.2, R.sup.3, R.sup.4 and R.sup.5 each represents H, a C.sub.1 -C.sub.6 alkyl group, an aryl group, an aralkyl group, a C.sub.1 -C.sub.5 alkoxy group, a halogen atom, a cyano group, a trichloromethyl group, a trifluoromethyl group or a nitro group; R.sup.6 and R.sup.7 each represents H, a C.sub.1 -C.sup.6 alkyl group, an aryl group, an aralkyl group, a halogen atom, a cyano group or a nitro group; and X is an oxygen atom or a sulfur atom, and a homopolymer of the above compound or a copolymer of the above compound and a vinyl compound represented by the formula C H.sub.2 .dbd.C (Y) (Z) wherein Y is H or CH.sub.3 ; and Z is a carboxyl group, an alkoxy-carbonyl group, a cyano group, a carbamoyl group, an N,N-dimethylcarbamoyl group, an acetoxy group, a phenyl group or a methylphenyl group.
本发明提供一种具有以下公式(Ia)的光致变色化合物:##STR1## 其中,R1是C1-C20烷基或芳基烷基;R2、R3、R4和R5分别表示H、C1-C6烷基、芳基、芳基烷基、C1-C5烷氧基、卤素原子、氰基、三氯甲基、三氟甲基或硝基;R6和R7分别表示H、C1-C6烷基、芳基、芳基烷基、卤素原子、氰基或硝基;X是氧原子或硫原子,并且上述化合物的同聚物或上述化合物和由C H2 =C(Y)(Z)表示的乙烯基化合物的共聚物,其中Y是H或CH3;Z是羧基、烷氧基羰基、氰基、氨基甲酰基、N,N-二甲基氨基甲酰基、乙酰氧基、苯基或甲基苯基。