Aryl hydrazides

Details Aryl hydrazides Aryl hydrazides

1993-01-13

1995-05-16

Ivy, C. Warren

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

430264, C07D23388, C07D23364, G03C 106

Patent

active

054162181

ABSTRACT:
Photographic silver halide materials containing aryl hydrazides as defined and novel aryl hydrazides with a cationic group in the acyl radical enables the preparation of photographic materials that can be developed rapidly to ultrahigh contrast at a relatively low pH value. The photographic materials are useful in reprography, particularly screening for halftone images.

REFERENCES:
patent: 3385831 (1968-06-01), Honig et al.
patent: 4224401 (1980-09-01), Takada et al.
patent: 5130480 (1992-07-01), Ruger
patent: 5204214 (1993-04-01), Okamura
Research Disclosure 23510, Anonymous, Nov. 1983.
Katritsky, Alan R., et al., Chemical Abstracts, vol. 99:158195W, Nov. 1983.

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