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    • 72. 发明授权
    • Recording material containing leuco dye
    • 含有无色染料的记录材料
    • US4839333A
    • 1989-06-13
    • US178935
    • 1988-04-07
    • Toru HaradaNaoki SaitoKozo Sato
    • Toru HaradaNaoki SaitoKozo Sato
    • B41M5/327B41M5/136B41M5/145C07D498/10C09B11/28
    • C07D498/10B41M5/136B41M5/165B41M5/323B41M5/327Y10S428/913Y10S428/914Y10T428/273Y10T428/277
    • A recording material comprises a layer containing a leuco dye provided on a support, characterized in that the leuco dye has the following formula (I): ##STR1## in which each of R.sup.1 and R.sup.2 independently is an alkyl group, a cycloalkyl group or an aralkyl group; each of R.sup.3 and R.sup.4 independently is a halogen atom, an alkyl group, a cycloalkyl group, an aralkyl group, alkoxy group or an acylamino group; R.sup.5 is an alkyl group, a cycloalkyl group, an aralkyl group, an alkoxy group, an aryloxy group, a dialkylamino group, an alkoxycarbonyl group, an aryloxycarbony group, a dialkylcarbamoyl group, an aryl group or a heterocyclic group; R.sup.6 is a halogen atom, an alkyl group, an alkoxy group, hydroxyl, amino, an alkylamino group, a dialkylamino group, an acylamino group, nitro, cyano, carbamoyl, sulfamoyl, an aryloxycarbonyl group, an alkoxycarbonyl group, an alkylsulfonyl group, an arylsulfonyl group, an alkylsufonylamino group, an arylsulfonylamino group or an aryl group; l is 0 or 1; m is 0 or 1; n is 0, 1, 2, 3 or 4; and each of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 may have one or more substituent groups.
    • 记录材料包括含有在载体上提供的无色染料的层,其特征在于所述无色染料具有下式(I):其中R 1和R 2各自独立地为烷基,环烷基 基团或芳烷基; R 3和R 4各自独立地为卤素原子,烷基,环烷基,芳烷基,烷氧基或酰氨基; R5是烷基,环烷基,芳烷基,烷氧基,芳氧基,二烷基氨基,烷氧基羰基,芳氧基羰基,二烷基氨基甲酰基,芳基或杂环基; R6是卤素原子,烷基,烷氧基,羟基,氨基,烷基氨基,二烷基氨基,酰氨基,硝基,氰基,氨基甲酰基,氨磺酰基,芳氧基羰基,烷氧基羰基,烷基磺酰基, 芳基磺酰基,烷基磺酰基氨基,芳基磺酰基氨基或芳基; l为0或1; m为0或1; n为0,1,2,3或4; R 1,R 2,R 3,R 4,R 5和R 6可以具有一个或多个取代基。