Method for dyeing fibrous materials

Details Method for dyeing fibrous materials Method for dyeing fibrous materials

1993-03-03

1995-06-27

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Organic additive for dye composition, dye composition...

Carboxamides or thiocarboxamides

8589, 8925, 8611, 8934, 8657, 8650, 8673, 8680, 8908, D06P 162, D06P 164, D06P 324, D06P 326

Patent

active

054275890

ABSTRACT:
A method for dyeing fibrous material is provided. The method includes contacting a fibrous material with a dyebath comprising a mixture of a dye assistant and a dye soluble or dispersed with dye assistant in the dyebath. The dye assistant comprises a salt of a low molecular weight aromatic sulfonic acid, and can include a low molecular weight surfactant. The dye assistant of the present invention can be advantageously utilized for dyeing difficult to dye fibers such as aromatic polyamide fibers, polybenzimidazole fibers and aromatic polyimide fibers.

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