Process for dyeing polymeric fibers
US5358537A · kind A · utility
19Cited by
10References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1991 |
| Grant date | Oct 25, 1994 |
| Priority date | — |
| Expiry date | Sep 17, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/929
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There is disclosed a process and a composition for dyeing polymeric fibers which have limited dye sites and/or difficult to penetrate chemical structures. Briefly stated, the process comprises the steps of contacting polymeric fibers with a dye composition comprising a disperse dye and a swelling agent. The fibers in contact with said dye composition are then preferably heated to a temperature and for a time sufficient to effect dispersion of a portion of said dye into said polymeric fibers. Subsequently, the fibers are treated to remove residual dye composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.