Rapid heat-treatment method for polybenzaole fiber
US5288445A · kind A · utility
6Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1992 |
| Grant date | Feb 22, 1994 |
| Priority date | — |
| Expiry date | Dec 3, 2012 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01D10/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention aims at improvement of heat-treatment technology for manufacture of large amounts of polybenzazole fibers. The fibers are heat treated in a device that provides for a rapid, cocurrent, countercurrent or both cocurrent and countercurrent flow of heat treatment gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.