Silver halide photographic elements which are capable of high contrast development having incorporated therein, as a nucleating agent, an aryl sulfonamidophenyl hydrazide of the formula:
where R is a monovalent group comprised of at least three repeating ethyleneoxy units, m is 1 to 6, Y is a divalent aromatic radical, and R¹ is hydrogen or a blocking group.
具有高反差显影能力的卤化
银感光元件,其成核剂为式中的芳基磺酰胺苯基酰
肼:
其中 R 是由至少三个重复
乙烯氧基单元组成的单价基团,m 是 1 至 6,Y 是二价芳香基,R¹ 是氢或封端基团。