Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1994-05-23
1995-05-09
Schofer, Joseph L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
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.
Chinoporos Efthimios
Pauze Robert H.
Waller David P.
Whritenour David C.
Black Edward W.
Cheng Wu C.
Polaroid Corporation
Schofer Joseph L.
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