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    • 5. 发明申请
    • MAGENTA IMAGE-DYE COUPLERS OF IMPROVED HUE
    • WO1993002392A1
    • 1993-02-04
    • PCT/US1992003393
    • 1992-04-23
    • EASTMAN KODAK COMPANY
    • EASTMAN KODAK COMPANYMERKEL, Paul, BarrettSINGER, Stephen, PaulCLARK, Bernard, Arthur, JamesSTANLEY, Paul, Louis, Reginald
    • G03C07/384
    • G03C7/384G03C7/24G03C7/30517
    • A photographic element and process provide a magenta coupler of formula (I) wherein (a) at least one of X1, X2 and R1 and at least one of R2 and R3 is a substituent individually selected from carbamoyl, alkoxycarbonyl, aryloxycarbonyl, sulfamoyl, alkylsulfonyl, arylsulfonyl, alkoxysulfonyl, aryloxysulfonyl, alkylsulfoxyl, arylsulfoxyl, acyloxy, cyano, nitro, and trifluoromethyl; (b) the substituents X1, X2, R1, R2 and R3 not selected from the (a) group may be selected from alkyl, alkoxy, aryloxy, acylamino, alkylthio, arylthio, sulfonamido, alkylureido, arylureido, alkoxycarbonylamino, aryloxycarbonylamino, and halogen and in the case of R3 hydrogen; (c) substituents R1 and R2 are para or meta to the carbon attached to the nitrogen atom; (d) a and b are 1 to 3; (e) Q is an alkylthio or arylthio coupling-off group. The element provides a deeper magenta hue and reduced blue absorption by the resulting magenta dye.
    • 照相元件和方法提供式(I)的品红成色剂,其中(a)X 1,X 2和R 1中的至少一个和R 2和R 3中的至少一个是单独选自氨基甲酰基,烷氧基羰基,芳氧基羰基,氨磺酰基,烷基磺酰基 芳基磺酰基,烷氧基磺酰基,芳氧基磺酰基,烷基亚砜基,芳基亚砜基,酰氧基,氰基,硝基和三氟甲基; (b)未选自(a)基团的取代基X1,X2,R1,R2和R3可以选自烷基,烷氧基,芳氧基,酰氨基,烷硫基,芳硫基,亚磺酰氨基,烷基脲基,芳基脲基,烷氧基羰基氨基,芳氧基羰基氨基和卤素 在R3氢的情况下; (c)取代基R 1和R 2与连接在氮原子上的碳对位或间位; (d)a和b为1〜3; (e)Q是烷硫基或芳硫基离去基团。 该元素提供更深的品红色色调,并由所得品红色染料减少蓝色吸收。