Acrylic fibers with high physical properties
US4952453A · kind A · utility
4Cited by
2References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 27, 1988 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | May 27, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2913
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Acrylic fibers with high physical properties particularly suitable as material for cement reinforcement are provided by spinning a spinning solution of an acrylonitrile polymer at a particular linear velocity ratio of extrusion, thereby forming gel fibers; regulating the internal water content of the gel fibers, subjecting the fibers to dry-heat treatment under tension or dry-heat stretching under a particular temperature condition; and cooling the fibers under tension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.