Photographic material containing a new type of hydrazide

Details Photographic material containing a new type of hydrazide Photographic material containing a new type of hydrazide

1995-03-07

1996-09-24

Letscher, Geraldine

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430598, 430607, G03C 106

Patent

active

055589740

ABSTRACT:
A new type of hydrazide compounds is disclosed corresponding to general formula (A): ##STR1## the symbols of which are explained in the description. Examples of synthesis are given. Incorporation of these diacyl hydrazides into the silver halide emulsion layer(s) of a photographic material causes a significant increase in sensitivity.

REFERENCES:
patent: 3655391 (1972-04-01), Merli et al.
patent: 5204214 (1993-04-01), Okamura et al.
patent: 5270334 (1993-12-01), O'Sullivan et al.

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