Method of treating polyaramid fiber
US4525168A · kind A · utility
22Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 27, 1984 |
| Grant date | Jun 25, 1985 |
| Priority date | — |
| Expiry date | Jan 27, 2004 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P3/241
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Polyaramid fiber is swollen, such as by exposing it to a solvent, and while swollen a substance, such as amine or substituted amine, capable of forming an ionic bond with an acid or anionic dye, is introduced into the fiber, after which the fiber is shrunk, such as by drying, to incorporate the substance into it. Thereafter, the fiber can be dyed or printed with an anionic dye. A solution of the solvent and substance may be prepared, and the fiber contacted with the solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.