Dye-providing compounds

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

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Details

5482624, 548149, 526257, C07D27760, C07D24908, C08F 2806

Patent

active

054140919

ABSTRACT:
There are disclosed dye-providing compounds comprising color coupler dyes substituted on the phenylene diamine portion with one or two cyclic 1,3-sulfur-nitrogen groups. The dye-providing compounds are capable of releasing the coupler dye upon cleavage in the presence of silver ions or a soluble silver complex. The dye-providing compounds are useful as image-forming materials in color thermographic, photothermographic and other photographic processes.

REFERENCES:
patent: 3719489 (1973-03-01), Cieciuch et al.
patent: 4053312 (1977-10-01), Fleckenstein
patent: 4098783 (1978-07-01), Cieciuch et al.

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