Process for the photochemical stabilization of undyed and dyed polyamide fibre material and blends thereof with copper complex of hydroxy-salicyl-oyl-hydroxylamine derivative
US4990164A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Sep 27, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/926
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process is described for the photochemical stabilization of undyed and dyed polyamide fibre material, and blends thereof with other fibres, using photochemically stabilizing compositions based on copper compounds of phenols, which process comprises treating the polyamide fibre material with fibre-reactive organic copper complexes of the reaction products of o-hydroxybenzoyl derivatives of the formula ##STR1## wherein R is hydrogen or C.sub.1 -C.sub.4 alkyl and the OH substituent is located in the 3-, 4- or 5-position, with aliphatic diamines or hydroxylamine. The copper complex compounds are distinguished by a high rate of exhaustion on to the polyamide fibre material, a feature which is significant in economic terms because of the low consumption of product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.