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    • 2. 发明授权
    • Color photographic recording material containing a DIR coupler
    • 含有DIR耦合器的彩色照相记录材料
    • US5021331A
    • 1991-06-04
    • US528043
    • 1990-05-23
    • Hans VetterHeinrich OdenwalderPeter BergthallerThomas Kruger
    • Hans VetterHeinrich OdenwalderPeter BergthallerThomas Kruger
    • G03C7/305G03C7/32
    • G03C7/305Y10S430/158
    • Highly active silver halide development inhibitors are released from DIR couplers corresponding to formula I during color development. Where DIR couplers are used in color photographic silver halide materials, high edge effects and high inter-image effects are obtained.A--(TIME).sub.n --Z IIn formula I,A is the residue of a coupler which couples with the oxidation product of a silver halide developing agent under the conditions of photographic development and, in doing so, releases a group corresponding to the following formula--(TIME).sub.n --ZTIME is a binding link which together with the group Z (a triazole ring) attached thereto is releases on reaction of the coupler with the oxidation product of a silver halide developing agent and which, in turn, releases the group Z with delay under the development conditions;n is 0 or 1;Z is a triazole ring corresponding to one of the following formulae ##STR1## R.sup.1 is alkylthio; R.sup.2 is H, alkyl, alkythio, aryl or a heterocyclic group; at least one of the substituents R.sup.1 and R.sup.2 contains at a distance of 2 to 4 atoms from the triazole ring a group --CO--OR.sup.3, --O--CO--OR.sup.3 or --O--CO--R.sup.3 hydrolyzable in aqueous alkali;R.sup.3 is alkyl, cycloalkyl or aryl.
    • 在显影期间,高活性卤化银显影抑制剂从对应于式I的DIR成色剂中释放出来。 在彩色照相卤化银材料中使用DIR成色剂时,可获得高边缘效果和高图像效果。 A-(TIME)n-Z在式I中,A是在照相显影的条件下与卤化银显影剂的氧化产物偶联的成色剂的残基,并且在这样做时,释放相应于下列物质的基团 式 - (TIME)nZ TIME是与连接到其上的组Z(三唑环)一起的结合链接,其与成色剂与卤化银显影剂的氧化产物反应释放,并且反过来释放基团 Z在发展条件下有延误; n为0或1; Z是对应于下式之一的三唑环:R 1是烷硫基; R2是H,烷基,链烯基,芳基或杂环基; 取代基R 1和R 2中的至少一个与三唑环在含水碱中可水解的基团-CO-OR3,-O-CO-OR3或-O-CO-R3的距离为2至4个原子; R3是烷基,环烷基或芳基。