Mesophase pitches, carbon fiber precursors, and carbonized fibers
US5238672A · kind A · utility
11Cited by
95References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1989 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Jun 20, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10C3/002
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Producing carbon fiber precursors and carbonized fibers comprise by treating a thin film of catalytic pitch at elevated temperature conditions, treating the resulting heavy isotropic pitch by agitating with an inert gas under elevated temperature conditions to form a mesophase pitch, forming green fibers from said mesophase pitch, stabilizing and optionally carbonizing said green fibers to obtain the desired product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.