High contrast photographic element including an aryl sulfonamido

Radiation imagery chemistry: process – composition – or product th – Silver halide colloid tanning process – composition – or product

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430410, 430598, G03C 110

Patent

active

049886045

ABSTRACT:
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: ##STR1## 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 R.sup.1 is hydrogen or a blocking group.

REFERENCES:
patent: 4681836 (1987-07-01), Inoue et al.
patent: 4824774 (1989-04-01), Inoue et al.
patent: 4912016 (1990-03-01), Machonkin et al.

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