Method of treating natural or synthetic polyamide fiber materials
US6280482A · kind A · utility
1Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2000 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Jul 5, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/93
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of improving the stability to ozone exposure of dyes on natural or synthetic polyamide fiber materials comprises treating the fiber material, before, during or after dyeing, with a liquor comprising a homopolymer or copolymer having structural repeating units of formula (1) ##STR1## in which PA1 R.sub.1 is unsubstituted or substituted C.sub.1 -C.sub.4 alkyl. The resulting dyeings and prints feature improved ozone fastness with no effect on hue, colour yield and other fastness properties such as light fastness, for instance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.