Process of sensitizing silver halide emulsion with a dithioester
    4.
    发明授权
    Process of sensitizing silver halide emulsion with a dithioester 失效
    用二硫代酯对卤化银乳剂进行敏化的方法

    公开(公告)号:US4030928A

    公开(公告)日:1977-06-21

    申请号:US632936

    申请日:1975-11-18

    IPC分类号: G03C1/09 G03C1/28

    CPC分类号: G03C1/09

    摘要: Method for increasing the sensitivity of a photographic silver halide-gelatin emulsion comprising at the beginning of the chemical ripening adding to the emulsion of a dithioester of the formula: ##STR1## in which R is alkyl, .alpha.-hydroxyalkyl, .alpha.-hydroxyaralkyl, condensed aryl, or o- or p-substituted phenyl or .alpha.-naphthyl, the o- or p- located substituent being a F, OH, dialkylamino, sulfo, phenyl, phenylazo or anilidocarbonyl group and R.sub.1 is alkyl or aralkyl.

    摘要翻译: 包括在化学成熟开始时添加照相卤化银 - 明胶乳液的敏感性的方法加入下式的二硫代酯的乳液:其中R是烷基,α-羟烷基,α-羟基烷基,缩合的 芳基或邻 - 或对 - 取代的苯基或α-萘基,取代或取代的取代基是F,OH,二烷基氨基,磺基,苯基,苯偶氮或酰亚胺基羰基,R 1是烷基或芳烷基。