Alcohol-based spin liquids for flash-spinning polymeric plexifilaments
US5250237A · kind A · utility
13Cited by
7References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 11, 1992 |
| Grant date | Oct 5, 1993 |
| Priority date | — |
| Expiry date | May 11, 2012 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F6/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process is provided for flash-spinning plexifilamentary film-fibril strands of a fiber-forming polyolefin from a C.sub.1-4 alcohol or a C.sub.1-4 alcohol/co-solvent spin liquid that, if released to the atmosphere, presents no or a greatly reduced ozone depletion hazard, as compared to the halocarbon spin liquids currently-used commercially for making such strands. The resulting flash-spun plexifilamentary film-fibril strands are well fibrillated and are of a quality equivalent to commercially available strands. The invention also covers the spin liquids useful in the inventive process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.