Method for rapid spinning of a polybenzazole fiber
US5294390A · kind A · utility
7Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1992 |
| Grant date | Mar 15, 1994 |
| Priority date | — |
| Expiry date | Dec 3, 2012 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F6/74
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Polybenzazole polymer dopes are spun through a spinneret having more than 2 per cm.sup.2, of orifices in relatively close proximity. The dope filaments formed, then pass through an air gap which has a temperature of 50.degree. to 100.degree. C. and a gas flow sufficient to uniformly reduce the temperature of the dope filaments. The filaments cool in the air gap and are then coagulated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.