申请人:Fuji Photo Film Co., Ltd.
公开号:US04220356A1
公开(公告)日:1980-09-02
A chromenoindole derivative of the following general formula (I): ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, each represents an alkyl group, an alkyl group substituted with one or more of a cyano group, a halogen atom or an alkoxy group, an aralkyl group, a phenyl group or a phenyl group substituted with one or more of an alkyl group or a halogen atom; X represents a hydrogen atom, an alkoxy group, a dialkylamino group, an alkylarylamino group, an alkylaralkylamino group, a diaralkylamino group, an acylamino group, a halogen atom or an alkyl group; Y represents a hydrogen atom, an alkyl group, a halogen atom, an alkoxy group of a nitro group; Z represents an acyl group, or a sulfonyl group; Q.sub.1 and Q.sub.2, which may be the same or different, each represents a hydrogen atom, a lower alkyl group or a halogen atom; and A.sub.1, A.sub.2, A.sub.3 and A.sub.4, which may be the same or different, each represents a halogen atom, an alkyl group or an alkoxy group; which upon contact with an electron acceptor material forms a color with superior light fastness and which is useful as a color former in various recording materials such as pressure-sensitive recording sheets, thermosensitive recording sheets, electrothermosensitive recording sheets, and photosensitive recording sheets.
以下是通式(I)的一种色诱导体,其中R1和R2,可以相同也可以不同,分别代表烷基,被一个或多个氰基,卤素原子或烷氧基取代的烷基,芳基烷基,苯基或被一个或多个烷基或卤素原子取代的苯基;X代表氢原子,烷氧基,二烷基氨基,烷基芳基氨基,烷基芳基烷基氨基,二芳基氨基,酰胺基,卤素原子或烷基;Y代表氢原子,烷基,卤素原子,烷氧基或硝基;Z代表酰基或磺酰基;Q1和Q2,可以相同也可以不同,分别代表氢原子,低烷基或卤素原子;A1,A2,A3和A4,可以相同也可以不同,分别代表卤素原子,烷基或烷氧基;该色诱导体在与电子受体材料接触时形成具有优异耐光性的颜色,并且可用作各种记录材料中的颜色形成剂,如压敏记录纸,热敏记录纸,电热敏记录纸和光敏记录纸。