Process for dyeing textile material having polyester fibers

Details Process for dyeing textile material having polyester fibers Process for dyeing textile material having polyester fibers

1998-12-11

1999-12-21

Einsmann, Margaret

Bleaching and dyeing; fluid treatment and chemical modification

Organic additive for dye composition, dye composition...

Carboxylic acid or salt thereof

8630, 8922, D06P 354

Patent

active

060043571

ABSTRACT:
In a process for dyeing textile material including polyester fibers, the textile material is treated in an alkaline dye bath containing a dispersion dyestuff at a temperature above 100.degree. C. The pH-value of the dye bath is adjusted by the initial addition of a buffer mixture preferably comprising glycine and soda lye prior to the commencement of the dyeing operation. A perborate salt such as sodium perborate is also added. The pH-value is kept substantially constant from the beginning to the end of the dyeing operation. A sequestering agent including nitrilotriacetic acid and polycarboxylates can be alternatively or additionally added to the dye bath.

REFERENCES:
patent: 4509992 (1985-04-01), Higgins
patent: 5019133 (1991-05-01), Himeno et al.

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