Photochemically stabilized polyamide compositions

Details Photochemically stabilized polyamide compositions Photochemically stabilized polyamide compositions

D - Textiles, Paper

06

P

D06P 3/24 (2006.01) C08L 77/02 (2006.01) D01F 1/10 (2006.01) D01F 6/10 (2006.01) D01F 6/60 (2006.01) D06P 1/39 (2006.01) D06P 5/00 (2006.01)

Patent

CA 2199639

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.

Un procédé pour préparer des compositions de nylon teinté photochimiquement stables consiste à plonger, dans un bain de teinture, un article formé de poly(epsilon-caprolactame) hydrolytiquement polymérisé en présence d'eau, d'un régulateur de chaîne carboxylique et d'un dérivé de la pipéridine encombré; et, dans le bain de teinture, teindre l'article formé avec un ou plusieurs colorants acides métallisés ou non métallisés.

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