Photographic developer composition

Details Photographic developer composition Photographic developer composition

1985-04-29

1986-01-21

Downey, Mary F.

Radiation imagery chemistry: process, composition, or product th

Nonradiation sensitive image processing compositions or...

Developer

430490, G03C 530

Patent

active

045657769

ABSTRACT:
Oxidation inhibiting amounts of alkylated diphenyl oxide disulfonates are incorporated into photographic color developers containing primary aromatic amino color developing agents to increase clarity and inhibit the formation of tar-like precipitates in these developers. Typical disulfonates include sodium dodecyl diphenyl ether disulfonate, sodium decyl diphenyl ether disulfonate, sodium cetyl diphenyl ether disulfonate, monocetyl diphenyl ether disulfonate, dicetyl diphenyl ether disulfonate and mixtures thereof. The use of disulfonates of this type substantially eliminates the need for cosolvents such as alkanolamines to inhibit the formation of tar-like particles in the developers.

REFERENCES:
patent: 2618558 (1953-02-01), Vittum et al.
Research Disclosure, Aug. 1977, pp. 28-30, #16040.

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