Treatment of photographic processing solutions

Details Treatment of photographic processing solutions Treatment of photographic processing solutions

1976-12-02

1979-07-31

Waltz, Thomas

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

96 55, 96 663, 210 40, 252426, 26050117, 2605012, 260573, 260575, 260578, 260708, 2603437, 260583DD, 544170, 548356, 548363, C07C14375, C07C 9106, C07C 8758, G03C 530, G03C 730

Patent

active

041630238

ABSTRACT:
A process of selectively separating a developing agent and/or a color development accelerator such as benzyl alcohol, etc., from photographic processing solutions containing these materials by bringing the processing solutions into contact with a copolymer selected from the group consisting of a styrenedivinylbenzene copolymer and a methacrylic acid monoestermethacrylic acid polyester copolymer. The developing agent thus adsorbed on the copolymer can be recovered therefrom by treating the copolymer with, e.g., diluted sulfuric acid.

REFERENCES:
patent: 2358053 (1944-09-01), Brunings
patent: 3253920 (1966-05-01), Rees et al.
patent: 3936394 (1976-02-01), Kusunose et al.
Volynkin et al., CA 81: 140603W, (1974).
Walser, CA 70: 99441z, (1969).
Seidl et al., CA 84: 50239q, (1976).
Vinson et al., CA 79: 128981u, (1973).
Wolf et al., CA 64: 8330c, (1966).

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