Process for producing carbon fibers
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United States of America Patent
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-
Mar 16, 1982
Grant Date -
N/A
app pub date -
Nov 23, 1979
filing date -
Dec 21, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A fibrous carbon is prepared by dissolving coal in a hydrocarbon solvent by heating under hydrogen pressure, by subjecting to melt spinning a solvent-refined coal obtained by successively removing insoluble residues and the solvent from the resultant solution, by making the fiber thus obtained non-fusible, and then by subjecting same to carbonization. The melt spinning may be effected by mixing a highly aromatic bituminous substance with the solvent refined coal. Alternatively, the solvent-refined coal may be pretreated prior to melt spinning by extracting it with a non-aromatic solvent to remove soluble components therefrom.
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