Cyan coupler

Details Cyan coupler Cyan coupler

1991-08-30

1993-06-29

Wright, Lee C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430543, G03C 732, G03C 738

Patent

active

052233863

ABSTRACT:
There are disclosed a novel cyan dye-forming coupler and a silver halide photographic light-sensitive material containing the novel coupler represented by the following Formulas I to V: ##STR1## wherein R represents a substituent; Y represents a substituent having a Hammett's substituent constant .sigma.p of not less than 0.3 and not more than 1.5; Z represents the group of atoms necessary to form a 5 to 7-membered nitrogen-containing heterocyclic ring; l, m and n are the integers of 0 to 4, 0 to 5 and 0 to 3, respectively; and X represents a hydrogen atom or a substituent capable of splitting off upon a reaction with an oxidation product of a developing agent.

REFERENCES:
patent: 2186719 (1940-01-01), Frohlich et al.
patent: 2362519 (1944-11-01), Woodward
patent: 2389575 (1945-11-01), Kirby et al.
patent: 2394527 (1946-02-01), Woodward
patent: 2486440 (1949-11-01), Schmidt et al.
patent: 2569906 (1951-10-01), Starke, Jr.
patent: 3245795 (1966-04-01), Gaspar
patent: 3304182 (1967-02-01), Frohlich
patent: 4171220 (1979-10-01), Vetter et al.
"The Theory of the Photographic Process", 3rd Edition, 1966 Mees and James, p. 387.

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