Mesoionic 1,2,4-triazolium-3-thiolates as silver halide stabiliz

Details Mesoionic 1,2,4-triazolium-3-thiolates as silver halide stabiliz Mesoionic 1,2,4-triazolium-3-thiolates as silver halide stabiliz

1981-11-24

1983-03-29

Downey, Mary F.

Radiation imagery chemistry: process, composition, or product th

Thermographic process

Heat applied after imaging

430354, 430455, 430566, 430955, G03C 538, G03C 106

Patent

active

043784240

ABSTRACT:
Mesoionic 1,2,4-triazolium-3-thiolates are silver halide stabilizers and fixing agents. They are useful in heat developable and heat stabilizable photographic silver halide materials and processes. After imagewise exposure of the photographic materials, developed and stabilized silver images are produced by heating the materials. The mesoionic 1,2,4-triazolium-3-thiolates are also silver halide stabilizers and fixing agents in photographic silver halide processing compositions.

REFERENCES:
patent: 3017270 (1962-01-01), Tregillus et al.
patent: 3252799 (1966-05-01), Gotze et al.
patent: 3893859 (1975-07-01), Burness et al.
patent: 4003910 (1977-01-01), Bartels-Keith et al.
patent: 4012260 (1977-03-01), Dickerson et al.
Research Disclosure, Dec. 1978, Item No. 17643.
Research Disclosure, Jun. 1978, Item No. 17029.
Research Disclosure, Jan. 1979, Item No. 17710.
J. C. S. Perkin I., p. 633-638, 1974, by W. David Ollis et al.
Journal of Organic Chemistry, 37 (7), p. 2245-2252 (1967).
Chemical Abstracts, 63:2966b (1965).
Research Disclosure, Apr. 1981, Item No. 20430.

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