Process for producing carbon fibers from mesophase pitch
US4032430A · kind A · utility
38Cited by
15References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 11, 1973 |
| Grant date | Jun 28, 1977 |
| Priority date | — |
| Expiry date | Dec 11, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/19
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An improved process for producing pitch which has been transformed, in part, to a liquid crystal or so-called "mesophase" state. According to the process, pitch of a given mesophase content, suitable for producing carbon fibers, is produced in substantially shorter periods of time than heretofore possible, at a given temperature, by subjecting the pitch to reduced pressure during formation of the mesophase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.