Process for dyeing dry-spun aromatic polyamides

Details Process for dyeing dry-spun aromatic polyamides Process for dyeing dry-spun aromatic polyamides

D - Textiles, Paper

06

P

8/31.07

D06P 3/24 (2006.01) D01F 6/60 (2006.01) D06P 1/92 (2006.01) D06P 7/00 (2006.01)

Patent

CA 1061506

ABSTRACT OF THE DISCLOSURE At present it is not possible to adequately dye synthetic fibers which contain aromatic radicals. The present invention seeks to overcome the drawback in the art by providing a process for the production of dyed filaments of aromatic polyamides, which comprises passing dry-spun filaments of an aromatic polyamide which optionally contains heterocyclic groups and which contains acid groups, before or during stretching, through an aqueous bath containing a cationic water-soluble dye.

233094

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