Process for dyeing or printing/flame retarding aramids
US5275627A · kind A · utility
19Cited by
7References
25Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 13, 1992 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Feb 13, 2012 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P3/241
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Aramid fabrics treated with N-cyclohexyl-2-pyrrolidone prior to or simultaneously with aqueous print pastes promote fabric printability and produces good coloration. Saturated steam or superheated steam at a temperature of at least 100.degree. C. permeates and fixes the dye inside of the aramid fibers. Print pastes containing N-cyclohexyl-2-pyrrolidone, dye and thickener are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.