Bleaching and dyeing; fluid treatment and chemical modification – Reactive dye composition – process – or product
Patent
1993-07-29
1995-01-03
Lieberman, Paul
Bleaching and dyeing; fluid treatment and chemical modification
Reactive dye composition, process, or product
81081, 8111, 8585, 8587, 8918, 8931, 8DIG2, C09B 6200, D06L 302
Patent
active
053782453
ABSTRACT:
The invention relates to a process for dyeing cellulose fibres such as cotton fibres, comprising successively the steps of (a) bleaching the cellulose fibres with an alkaline bath containing aqueous hydrogen peroxide; (b) neutralizing the residual hydrogen peroxide with a reducing agent; and (c) dyeing the cellulose fibres with a reactive dye sensitive to said reducing agent, wherein, after stage (b) and at the latest at the beginning stage (c), any residual agent is neutralized by a quantity of an alkali or alkaline-earth metal halogenite sufficient to neutralize it, whereby it is possible not to perform any intermediate rinsing between stages (a) and (c).
REFERENCES:
patent: 2739868 (1956-03-01), Shanley et al.
patent: 4378967 (1983-04-01), Yotsuya et al.
patent: 4643736 (1987-02-01), Cholley
patent: 4806126 (1989-02-01), Sternberger et al.
patent: 5071439 (1991-12-01), Weible
patent: 5201915 (1993-04-01), Ricci
Database WPIL, Week 9017, Derwent Publications Ltd, (London GB) AN 90-127450 & JP-A-2 074 666 (Santo Iron Works KK) 14 Mar. 1990.
Dusheck Caroline L.
Lieberman Paul
Manufacture de Produits Chimiques Protex
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