One bath type silver dye bleaching and silver bleaching

Details One bath type silver dye bleaching and silver bleaching One bath type silver dye bleaching and silver bleaching

1976-06-23

1978-01-24

Kelley, Mary F.

Gas separation: apparatus

Electric field separation apparatus

With means for vapor or liquid contact

96 60R, 96 60BF, G03C 700, G03C 532

Patent

active

040701883

ABSTRACT:
A one bath type silver dye bleaching and silver bleaching solution which comprises at least a) a compound which forms a salt or a complex with silver, b) at last one acid selected from sulfamic acid, aliphatic and aromatic sulfonic acids, aliphatic and aromatic sulfinic acids, phosphoric acid and sulfuric acid, c) an organic acid having at least one carboxylic group in its molecule and d) a ferric salt (or a complex thereof with the organic acid c), in which case the solution comprises element a), b) and the complex).

REFERENCES:
patent: 2304987 (1942-12-01), Young et al.
patent: 2322084 (1943-06-01), Young et al.
patent: 3582322 (1971-06-01), Edens et al.
patent: 3716362 (1973-02-01), Meier
patent: 3963492 (1976-06-01), Marthaler et al.

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