Bleaching and dyeing; fluid treatment and chemical modification – Bleaching – Chemical
Patent
1983-07-15
1985-05-07
Clingman, A. Lionel
Bleaching and dyeing; fluid treatment and chemical modification
Bleaching
Chemical
8543, 8584, 8650, 8918, 8549, 252180, 25218625, 25218628, D06L 302, D06P 340, D06P 502
Patent
active
045155968
ABSTRACT:
Dyed fibrous materials made of or containing cellulose which were not bleached before dyeing are aftertreated in a combined bleaching and washing bath which can, optionally, contain as stabilizers derivatives of phosphonic or phosphorous acid, optionally as a combination with polyhydroxy compounds. The resulting materials have bright and brilliant shades.
This aftertreatment makes it possible to by-pass the otherwise customary, time-consuming and expensive drying of the materials between a bleach before dyeing and the dyeing itself.
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Berendt Hans-Ulrich
Pacher Marielise
Ciba-Geigy Corporation
Clingman A. Lionel
Mansfield Kevin T.
McC. Roberts Edward
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