Photographic element with pyrazole electron donors
    11.
    发明授权
    Photographic element with pyrazole electron donors 失效
    具有吡唑电子给体的摄影元件

    公开(公告)号:US4407941A

    公开(公告)日:1983-10-04

    申请号:US355464

    申请日:1982-03-08

    摘要: A photographic element comprising a support provided thereon with at least one light-sensitive silver halide emulsion layer containing a nondiffusible compound which receives at least one electron in an alkaline condition to release a photographically useful material and a nondiffusible electron donor or a precursor thereof having the following formula (I) or (II): ##STR1## wherein R.sup.1 represents hydrogen, an alkyl, an aryl or a heterocyclic group, R.sup.2 represents hydrogen, an alkyl, an aryl, a heterocyclic, an amino, a carbamide, a sulfonamide, a sulfamoyl, a carbamoyl or a ureido group, R.sup.3 and R.sup.4 each is hydrogen, --COR.sup.5, --SO.sub.2 R.sup.6 or --CSR.sup.7 wherein R.sup.5 and R.sup.6 each is a substituted or unsubstituted, respectively, alkyl, alkenyl, aryl, heterocyclic, alkylamino, alkyloxy, aryloxy, alkylthio, arylthio, alkyloxycarbonyl or aryloxycarbonyl group, and R.sup.7 is a substituted or unsubstituted alkyllamino or arylamino group, said R.sup.4 being allowed to form a ring together with said R.sup.1.

    摘要翻译: 一种照相元件,包括其上提供有至少一种感光卤化银乳剂层的载体,所述至少一种感光卤化银乳剂层含有不可扩散的化合物,其在碱性条件下接收至少一种电子以释放具有照相作用的材料,以及不可溶的电子给体或其前体, 下式(I)或(II):其中R 1表示氢,烷基,芳基或杂环基,R 2表示氢,烷基,芳基,杂环,氨基,脲,磺酰胺, 氨基甲酰基或脲基,R 3和R 4各自为氢,-COR 5,-SO 2 R 6或-CSR 7,其中R 5和R 6各自为取代或未取代的烷基,烯基,芳基,杂环,烷基氨基,烷氧基, 芳氧基,烷硫基,芳硫基,烷氧基羰基或芳氧基羰基,R7是取代或未取代的烷基氨基或芳基氨基,所述R4与所述R 1一起形成环。