HIGH CONTRAST PHOTOGRAPHIC ELEMENT INCLUDING AN ARYL SULFONAMIDOPHENYL HYDRAZIDE CONTAINING AN ALKYL PYRIDINIUM GROUP
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 each R is an alkyl group, n is 1 to 3, X is an anion, m is 1 to 6, Y is a divalent aromatic radical, and R1...
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Main Authors | , |
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Format | Patent |
Language | English French |
Published |
25.11.1991
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Edition | 5 |
Subjects | |
Online Access | Get full text |
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Summary: | 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 each R is an alkyl group, n is 1 to 3, X is an anion, m is 1 to 6, Y is a divalent aromatic radical, and R1 is hydrogen or a blocking group. |
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Bibliography: | Application Number: CA19912039565 |