Pitch for carbon fibers
US4474617A · kind A · utility
11Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1983 |
| Grant date | Oct 2, 1984 |
| Priority date | — |
| Expiry date | Feb 9, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10C3/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A pitch which affords a carbon fiber having a high strength and a high elastic modulus is obtained by treating a pitch containing 5 to 35 wt. % of an optically anisotropic region with an oxidizing gas, followed by hydrogenation treatment if required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.