Treatment of dyed nylon fibers to prevent degradation caused by

Details Treatment of dyed nylon fibers to prevent degradation caused by Treatment of dyed nylon fibers to prevent degradation caused by

1999-05-14

2000-09-19

Liott, Caroline D.

Bleaching and dyeing; fluid treatment and chemical modification

Color protecting process for dyed product

8490, 8543, 8924, 8929, 8DIG21, D06P 502, D06P 138, D06P 139, D06P 324

Patent

active

061205591

ABSTRACT:
A process for arresting or attenuating ultraviolet induced damage to nylon fibers comprising dyeing cationic dyeable nylon fibers at a pH of about 2.5 or less with an acid dye, a fiber reactive dye or premetallized acid dye and, subsequent to exposing said fibers to fiber damaging amounts of ultraviolet light, applying a neutralizing aqueous solution having a pH of about 7.5 or greater to said fibers, thereby arresting or attenuating ultraviolet induced damage to said nylon fibers. The nylon fibers may be in a carpet which may be treated after installation.

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