Starting pitches for carbon fibers

Details Starting pitches for carbon fibers Starting pitches for carbon fibers

1982-11-15

1984-07-17

Doll, John

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

423447, 208 22, D01F 914

Patent

active

044605579

ABSTRACT:
A process for the production of carbon fibers comprising heat treating a starting material, melt spinning the resulting precursor pitch, infusibilizing the pitch fibers and carbonizing or graphitizing the infusibilized 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.

REFERENCES:
patent: 4272501 (1981-06-01), Greskovich et al.
Cram et al., Organic Chemistry, McGraw-Hill, 1964, p. 725.
Marsh et al., "Fuel", vol. 59, pp. 517-519, Jul. 1980.

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