Method of treating natural or synthetic polyamide fibre materials
US7090704B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 2002 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Jul 29, 2023 |
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 resistance of dyes on natural or synthetic polyamnide fiber materials to the action of ozone and NOx, which comprises treating the fiber material, before, during or after dyeing, with a liquor comprising a terpolymer containing structural repeating units of formulae (I), (II) and (III) in which R is a radical of formula (IV) wherein A1 and A2 are independently of one another a direct bond, C1–C8alkylene or —CO—NH—C1–C8alkylene, E is vinyl or —OSH3H and n denotes 0 or 1. The dyeings and prints obtained are distinguished by improved ozone fastness properties without the shade, color yield and other fastness properties, for example fastness to light, being affected
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.