Process for the manufacture of carbon fibers
US3959448A · kind A · utility
7Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1975 |
| Grant date | May 25, 1976 |
| Priority date | — |
| Expiry date | Feb 4, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J5/042
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention comprises the use of a solution or extract of coal as a carbonaceous material to produce carbon fibers, filaments or films in a process comprising extruding or spinning the carbonaceous material to form a fiber, filament or film, oxidizing the spun or extruded carbonaceous material to stabilize it to further heat treatment, and carbonizing the stabilized carbonaceous material. Solutions or extracts of coal may be made by treating the coal with a high boiling aromatic solvent, for example anthracene oil or phenanthrene, at an elevated temperature, for example 400.degree.C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.