Preoxidized fiber and process for producing the same
US4536448A · kind A · utility
7Cited by
3References
20Claims
0Family size
Inventors
Key dates
| Filing date | Sep 8, 1983 |
| Grant date | Aug 20, 1985 |
| Priority date | — |
| Expiry date | Sep 8, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2967
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A preoxidized fiber suitable for producing carbon fiber, comprising preoxidizing an acrylic fiber having thereon an ammonium salt of a fatty ester represented by formula [A] and [B] ##STR1## wherein R.sub.1 is an aliphatic hydrocarbon group having from 11 to 17 carbon atoms; R.sub.2 and R.sub.3 can each be hydrogen, a lower alkyl group, a hydroxyethyl group, or an hydroxyisopropyl group; and X.crclbar. is an anion. The preoxidized fiber produced from the acrylic fiber has very little coalescence, and therefore high-strength carbon fiber can be obtained from this preoxidized fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.