Starting pitches for carbon fibers

Patent · Tue Jul 17 00:00:00 EDT 1984

OSTI ID:6389389

Takashima, H; Hirose, T; Kato, O; Uemura, S; Yamamoto, S

A process for the production of carbon fibers comprising heat treating a starting material, melt spinning the resulting precursor pitch, impregnating the pitch fibers and carbonizing or graphitizing the impregnated pitch fibers, characterized in that the starting pitch is obtained by heat treating coal tar and/or coal liquefaction pitch at a specific temperature and a specific hydrogen pressure or by mixing coal tar and/or coal liquefaction tar with at least one nucleus-hydrogenated hydrocarbon of 2-3 rings in a specific mixing ratio and then heat treating the resulting mixture at a specific temperature and a specific pressure. In one embodiment, this invention relates to the starting pitch and carbon fibers obtained by said process.

• Assignee: Nippon Oil Co. Ltd. (Japan)
• Patent Number(s): US 4460557
• OSTI ID: 6389389
• Resource Relation: Patent Priority Date: Priority date 15 Nov 1982, Japan; Other Information: PAT-APPL-441670
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
CARBON FIBERS
PRODUCTION
COAL TAR
CARBONIZATION
GRAPHITIZATION
HEATING
COAL LIQUEFACTION
HYDROCARBONS
MIXTURES
PITCHES
CHEMICAL REACTIONS
DECOMPOSITION
DISPERSIONS
FIBERS
LIQUEFACTION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
TAR
THERMOCHEMICAL PROCESSES
010401* - Coal & Coal Products- Carbonization- (-1987)
010500 - Coal
Lignite
& Peat- Products & By-Products