Process for dyeing polyester

Details Process for dyeing polyester Process for dyeing polyester

2007-02-01

2010-12-07

Del Cotto, Gregory R (Department: 1796)

Bleaching and dyeing; fluid treatment and chemical modification

Organic additive for dye composition, dye composition...

Sulfur-containing

C008S922000, C008S609000, C008S636000, C008S639000, C008S116100, C008S115700, C008S918000

Reexamination Certificate

active

07846215

ABSTRACT:
The invention relates to a process for dyeing polyester fibre material according to the exhaust method, which process comprises the following steps:(a) pre-treatment of the fibre material with one or more surfactants,(b) dyeing with one or more disperse dyes, and(c) reductive after-treatment with a hydroxyalkylsulfinic acid or a hydroxyalkylsulfinic acid salt,wherein steps (a), (b) and (c) are carried out in succession in a single liquor.

REFERENCES:
patent: 4252532 (1981-02-01), Engelhardt et al.
patent: 6730132 (2004-05-01), Beckmann et al.
patent: 7396370 (2008-07-01), Gruner et al.
patent: 2002/0151235 (2002-10-01), Bartl et al.
patent: 19629453 (1998-01-01), None
patent: 10346944 (2005-05-01), None
patent: 10356336 (2005-06-01), None
Translation of abstract and document of DE 10346944 by esp@cenet Mar. 10, 2010.

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