Photographic color developer composition

Details Photographic color developer composition Photographic color developer composition

1978-01-05

1979-03-06

Kelley, Mary F.

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

96 56, 96 66R, G03C 530, G03C 700

Patent

active

041428951

ABSTRACT:
A color developer composition is provided which has substantially improved protection against oxidation of the color developer and excellent sequestering properties characterized in that the composition comprises an .alpha.-aminocarbonyl compound, an organo-phosphonic acid and an aminocarboxylic acid.

REFERENCES:
patent: 2936308 (1960-05-01), Hodge
patent: 3068100 (1962-12-01), Dersch
patent: 3201246 (1965-08-01), Allen et al.
patent: 3467521 (1969-09-01), Frank et al.
patent: 3582333 (1971-06-01), Yost
patent: 3617282 (1971-10-01), Bard et al.
patent: 3619185 (1971-11-01), Kasman
patent: 3846129 (1974-11-01), Koh
patent: 3994730 (1976-11-01), Frank
patent: 4055426 (1977-10-01), Ogawa

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