Process for producing pitch-type carbon fibers

Details Process for producing pitch-type carbon fibers Process for producing pitch-type carbon fibers

1988-10-03

1990-05-08

Doll, John

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

4234471, 4234472, 4234476, 264 292, D01F 912

Patent

active

049236920

ABSTRACT:
A process for producing pitch-type carbon fibers, which comprises melt-spinning pitch material in a gaseous atmosphere to form pitch fibers, gathering the pitch fibers in the presence of an oiling agent into a tow, followed by infusible treatment, carbonization treatment and, if necessary, graphitization treatment, of the tow of pitch fibers, characterized in that the tow of pitch fibers is brought in contact with a washing liquid to wash the surface of the pitch fibers prior to the infusible treatment.

REFERENCES:
patent: 3552922 (1971-01-01), Ishikawa et al.
patent: 4582662 (1986-04-01), Koga et al.
patent: 4656022 (1987-04-01), Uemura et al.
European Search Report No. EP 87 10 8397 dated 04-07-1989.

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