Silver halide photographic material

Details Silver halide photographic material Silver halide photographic material

1990-02-23

1991-12-10

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430556, 430557, 430558, G03C 736

Patent

active

050717375

ABSTRACT:
A cyan coupler for color photographic use and, particularly, to a photographic coupler forming a dye image excellent in durability against heat, humidity and light is disclosed. A silver halide emulsion layer contains a compound represented by general formula 1, ##STR1## wherein R represents substituents; m represents an integer of 0 or 1 to 6, when m is 2 to 6, plurality of Rs are identical or different; Y and Z are substituents having a Hammett's substituent constant .sigma.p 0.3 to 1.5 and are identical or different; X represents a hydrogen atom or a substituent which is released by a reaction of an oxidized product of a color developing agent.

REFERENCES:
patent: 3502468 (1970-03-01), Rogers
patent: 4871652 (1989-10-01), Normandin
Journal of Organic Chemistry, vol. 31, p. 919, (1966).
Patents Abstracts of Japan, vol. 13, No. 15 (C-559) (3363), Jan. 13, 1989; and JP-A-63 223 068, (K. Yoshida), Sep. 16, 1988.
Journal of the Chemical Society, Perkin Transactions I, No. 8, Aug. 1988, pp. 2439-2442, London, GB; Y. Kubo et al.: "Novel Syntheses of Naphthoquinone Methide Near-Infrared Dyes", (whole document).

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