High-shrinkage acrylic fibers and the process for their production
US4256684A · kind A · utility
4Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1979 |
| Grant date | Mar 17, 1981 |
| Priority date | — |
| Expiry date | Jun 1, 1999 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F6/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Acrylic yarns and fibers having a high shrinkage power, ranging up to 50%, obtained by wet spinning, a stretching of 1.3 to 3 .times. in air, washing, a stretching of 1 to 2.5 .times. into boiling water, drying, steaming at 105.degree.-150.degree. C., over-stretching of 1.2 to 2 .times. at 90.degree.-100.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.