Method for improving the lightfasteness of nylon dyeings using copper sulfonates
US4813970A · kind A · utility
57Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1988 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Feb 10, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/924
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention is directed to a method for the lightfastness enhancement of dyed nylon fibers by applying at least 10 ppm copper in the form of an alkyl, aryl, or alkyl-aryl copper sulfonate before, during, or after dyeing the nylon fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.