Bleaching and dyeing; fluid treatment and chemical modification – Reactive dye composition – process – or product – Alkylene sulfato – halotriazine – halodiazine,...
Patent
1990-10-24
1992-02-04
Clingman, A. Lionel
Bleaching and dyeing; fluid treatment and chemical modification
Reactive dye composition, process, or product
Alkylene sulfato, halotriazine, halodiazine,...
8532, 8543, 8594, 8601, 8918, D06P 138, D06P 366, C09B 6200
Patent
active
050856685
ABSTRACT:
On testing triphendioxazine reactive dyes it was found that they are unsuitable for almost all conventional single-step printing processes since they are not stable under these conditions.
In the course of the development of an uncomplicated single-step printing process for these dyes, it has been found according to the invention, then, that by replacing the customary fixing alkali (NaHCO.sub.3) by stoichiometrically specific amounts of sodium acetate or sodium trichloroacetate or certain mixtures of sodium trichloroacetate and sodium acetate it is possible to fix triphendioxazine reactive dyes in full yields without change in hue. In addition, it is possible to print conventional print pastes.
REFERENCES:
patent: 4588411 (1986-05-01), Scheibli et al.
patent: 4622396 (1986-11-01), Harms et al.
patent: 4786721 (1988-11-01), Tzikas et al.
patent: 4841048 (1989-06-01), Sawamoto et al.
patent: 4841049 (1989-06-01), Seitz
patent: 4874857 (1989-10-01), Harms
Pelster Gerhard
Schidlo Wolfram
Clingman A. Lionel
Hoechst AG
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