Aqueous oxidizing bath composition for vat and sulfur dyes and a

Details Aqueous oxidizing bath composition for vat and sulfur dyes and a Aqueous oxidizing bath composition for vat and sulfur dyes and a

1978-07-24

1979-05-22

Schulz, William E.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 37, 8 542, 8 76, 8 82, C09B 900

Patent

active

041557093

ABSTRACT:
A novel composition is described which is an aqueous oxidizing solution containing: (a) about 0.01 to about 10% by weight of an oxidant selected from the water-soluble iodate salts and the water-soluble bromate salts; (b) about 0.005% to about 5% by weight of a water-soluble vanadate salt; and (c) about 0.05 to about 10% of a water-soluble nitrate salt. An improved process for oxidizing vat or sulfur dyes is also described wherein the reduced form of the dye is oxidized by contact with the novel composition.

REFERENCES:
patent: 3775047 (1973-11-01), Weston
Review of Textile Progress, vol. 14, (1962), The Textile Institute, p. 332.

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