Title: Vat dye reduction process for use in a dyeing plant for textile processing

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.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Supanekar, Shashikant Dattatraya (Bombay, IN, US)
Daruwalla, Erach Hormasji (Bombay, IN, US)

Application Number: 493432
Filing Date: 1974-07-31
Publication_date: 1976-04-27
Assignee: Bombay Textile Research Association (IN)
Primary Class(es): 205/691 8/650
Other Classes:
US Patent Ref:

2371145

Mar, 1945

Brubaker

204/134.

Other Refs:
Primary Examiner: Andrews, R. L.
Assistant Examiner:
Attorney: Sughrue, Rothwell, Mion & Zinn