Vat dye reduction process for use in a dyeing plant for textile

Details Vat dye reduction process for use in a dyeing plant for textile Vat dye reduction process for use in a dyeing plant for textile

1974-07-31

1976-04-27

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

B01K 100, C23B 122

Patent

active

039533077

ABSTRACT:
A process for compensating for reduction in the reducing effect caused by atmospheric oxygen or dissolved oxygen in an aqueous reducingsolution of sodium hydrosulphite employed in a vat dye reduction process wherein the vat dye is reduced and fixed on textile materials by the reducing action of the aqueous alkaline reducing solution, which process comprises generating hydrogen in said reducing solution, which hydrogen combines with the dissociation products of the sodium hydrosulphite to form a powerful reducing species with relatively high redox potential, by carrying out electrolysis of the aqueous alkaline solution.

REFERENCES:
patent: 2371145 (1945-03-01), Brubaker

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