Photochemically stabilized polyamide compositions

Details Photochemically stabilized polyamide compositions Photochemically stabilized polyamide compositions

1996-07-31

1998-12-22

Einsmann, Margaret

Bleaching and dyeing; fluid treatment and chemical modification

Color protecting process for dyed product

8490, 8568, 8673, 8680, 8685, 8539, 8924, D06P 306

Patent

active

058512381

ABSTRACT:
A process for preparing photochemically stable dyed nylon compositions includes providing to a dyebath a shaped article of poly(epsilon-caprolactam) hydrolytically polymerized in the presence of water, a carboxylic acid chain regulator and a hindered piperidine derivative; and in the dyebath, dyeing the shaped article with one or more metalized or nonmetalized acid dyestuffs.

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