Photographic elements containing cyan-forming couplers

Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...

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430552, 430553, G03C 176, G03C 140

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active

043418643

ABSTRACT:
Cyan-forming color couplers according to the formula: ##STR1## wherein Z is hydrogen in the case of 4-equivalent couplers or a substituent that splits off upon color development, thus conferring a 2-equivalent character to the color coupler, and Y is a ballasting group. These cyan-forming color couplers can be incorporated in (a) red-sensitized silver halide emulsion layer(s) of a photographic multilayer color element or in a non-light-sensitive colloid layer in water-permeable relationship with the red-sensitized emulsion layer(s).

REFERENCES:
patent: 2895826 (1959-07-01), Salminen et al.
patent: 3880661 (1975-04-01), Lau et al.
patent: 4009035 (1977-02-01), Kojima et al.
patent: 4012258 (1977-03-01), Kojima et al.
patent: 4124396 (1978-11-01), Osborn
patent: 4299914 (1981-11-01), Fujimatsu et al.

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