RECORDING MATERIAL COMPRISING DIPHENYL SULFONE DERIVATIVE AND NOVEL DIPHENYL SULFONE DERIVATIVE COMPOUND
申请人:NIPPON SODA CO., LTD.
公开号:EP1557408A1
公开(公告)日:2005-07-27
The present invention provides a recording material which has excellent background stability, specifically heat resistance and heat and humidity resistance of the background. The recording material containing a color forming dye is characterized by containing at least one kind of diphenylsulfone derivative represented by the general formula (I):
(wherein R1 and R2 each represents a hydrogen atom or a C1 to C6 alkyl group, n represents an integer of 1 to 6, R3 and R4 each represents a halogen atom, a C1 to C6 alkyl group, etc., p and q each represents an integer of 0 to 4, X represents OR5 or NR6R7 wherein R5 represents a C1 to C6 alkyl group, a C1 to C6 hydroxyalkyl group, or a C1 to C6 alkoxy-C1 to C6 alkyl group, and R6 and R7 each represents a hydrogen atom, a C1 to C6 alkyl group, etc).
本发明提供了一种具有优异背景稳定性的记录材料,特别是具有优异的耐热性和耐热潮湿性的背景。含有一种颜色形成染料的记录材料的特征在于其至少含有一种由通式(I)表示的二苯砜衍生物:(其中R1和R2分别表示氢原子或C1至C6烷基,n表示1至6的整数,R3和R4分别表示卤素原子、C1至C6烷基等,p和q分别表示0至4的整数,X表示OR5或NR6R7,其中R5表示C1至C6烷基、C1至C6羟基烷基或C1至C6烷氧基-C1至C6烷基,R6和R7分别表示氢原子、C1至C6烷基等)。