Process for preparing carbon fibers of high strength
US4902762A · kind A · utility
2Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1987 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | Feb 9, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F20/44
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing carbon fibers of high strength which includes the steps of homopolymerizing acrylonitrile or copolymerizing acrylonitrile with other vinyl monomers in a concentrated zinc chloride aqeuous solution containing 0.01-5% by weight of hydrogen chloride to form a polymeric solution which is spinned to form precursor filaments which are carbonized to provide carbon fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.