Bleaching and dyeing; fluid treatment and chemical modification – Measuring – testing – or inspecting dye process
Patent
1991-08-07
1993-01-05
Clingman, A. Lionel
Bleaching and dyeing; fluid treatment and chemical modification
Measuring, testing, or inspecting dye process
8650, 8651, 8653, 8154, 8918, D06P 360, D06P 500, C09B 900, C09B 6728
Patent
active
051767155
ABSTRACT:
There is disclosed a process for dyeing cellulosic fibre materials with vat dyes, which comprises adding to the dyebath all or some of the auxiliary chemicals required for the dyeing process, and subsequently, after a pretratment time, adding the vat dye or its leuco form with the aid of a metering device to the dyebath, and dyeing the fiber materials by optionally increasing the temperature of the dyebath.
Level dyeings are obtained with the novel process, the cellulosic material having a perfectly level appearance as well as good light- and wetfastness properties.
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Chemical Abstracts 100:233065e (1989).
Ciba-Geigy Corporation
Clingman A. Lionel
Mathias Marla J.
McC. Roberts Edward
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