Silver halide emulsion containing two-equivalent magenta coupler

Details Silver halide emulsion containing two-equivalent magenta coupler Silver halide emulsion containing two-equivalent magenta coupler

1975-07-31

1977-06-28

Brown, J. Travis

Gas separation: apparatus

Electric field separation apparatus

And serially arranged nonelectrical separator

96 74, 96100, 260310A, G03C 700, G03C 140

Patent

active

040323463

ABSTRACT:
A photographic two-equivalent magenta coupler, capable of forming a magenta color image upon coupling reaction with an oxidation product of an aromatic primary amine developing agent, represented by the following general formula I: ##STR1## wherein (A) represents a residue of a magenta color image forming coupler; ##STR2## represents a group which is substituted FOR ONE HYDROGEN ATOM OF THE ACTIVE METHYLENE GROUP IN THE COUPLER A; Z represents an oxygen atom or a sulfur atom; B represents a -- Y group, a -- D -- Y group, or a ##STR3## group; D represents an oxygen atom or an --NR -- group; R represents a hydrogen atom, an alkyl group or an aryl group; Y represents an alkyl group, an aryl group or a heterocyclic group; and Q in the ##STR4## group represents the non-metallic atoms necessary to form a 5-membered or 6-membered nitrogen containing heterocyclic ring; and color photographic light-sensitive materials containing the two equivalent magenta coupler.

REFERENCES:
patent: 3212894 (1965-10-01), Menzel et al.
patent: 3576636 (1971-04-01), Matsui et al.
Papini et al., Chemical Abstracts, vol. 69, 59154f, (1968).

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