Method for dyeing aromatic polyamide fibrous materials: N,N-diet

Bleaching and dyeing; fluid treatment and chemical modification – Organic additive for dye composition – dye composition... – Carboxamides or thiocarboxamides

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8490, 8529, 8531, 8654, 8657, 8925, D06P 164, D06P 1649, D06P 324, D06P 326

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active

052078035

ABSTRACT:
A method for dyeing fibrous material is provided. The method includes contacting a fibrous material with a carrier and a dye soluble or dispersed with the carrier in a dyebath. The carrier comprises an N-substituted aromatic carbonamide or an N,N-disubstituted aromatic carbonamide or mixture thereof. The carrier system of the present can be advantageously utilized for improving dye and flame resistant properties of difficult to dye fibers such as aromatic polyamide fibers, polybenzimidazole fibers and aromatic polyimide fibers.

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