Dye forming coupler for photographic use

Details Dye forming coupler for photographic use Dye forming coupler for photographic use

1990-06-22

1991-04-30

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430558, 544229, 544244, 544250, G03C 738

Patent

active

050117653

ABSTRACT:
A novel cyan dye-forming coupler suitable for color photographic materials is disclosed. The coupler forms a cyan dye images excellent in resistivities to heat and moisture and fastness to light. The coupler has the following a chemical structure of Formula I; ##STR1## wherein X represents a group a group or atom, except hydrogen atom, capable of being split off upon reaction with the oxidized product of a color developing agent; R.sub.1, R.sub.2 and Y individually represent a hydrogen atom or a substituent; n is an integer of zero to 4, provided that the R.sub.2 s may be the same with or different from each other when n is 2, 3 or 4.

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patent: 4950585 (1990-08-01), Tachibana et al.
Hahn et al., Chem. Abstr. No. 123427x, vol. 103, 1985.
Chemical Abstracts-11 Coll. Index, pp. 58234CS-58235CS.

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