Color photographic recording material containing a coupler which

Details Color photographic recording material containing a coupler which Color photographic recording material containing a coupler which

1991-03-22

1993-04-06

Wright, Lee C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Two or more radiation-sensitive layers containing other than...

430544, 430557, 430558, 430955, 430957, G03C 7388

Patent

active

052003060

ABSTRACT:
Couplers corresponding to formula I below used in multilayer color photographic recording materials are suitable for the release of photographically active compounds. ##STR1## In formula I above, A represents the residue of a coupler which, as a consequence of a reaction with the oxidation product of a silver halide developer under the photographic development conditions, releases a radical corresponding to the following formula ##STR2## Time represents a bond which, on reaction of the coupler with the oxidation product of a silver halide developer, is released together with the triazole ring attached thereto and, in turn, releases the triazole ring with delay under the development conditions;

REFERENCES:
patent: 4049458 (1977-09-01), Boie et al.
patent: 5021331 (1991-06-01), Vetter et al.

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