Starting pitches for carbon fibers

Details Starting pitches for carbon fibers Starting pitches for carbon fibers

1984-02-10

1985-08-06

Gantz, D. E.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

4234476, 4234472, 208 22, 208 40, 208 23, 208 39, D01F 912, C10C 302

Patent

active

045335354

ABSTRACT:
A starting pitch for carbon fibers is obtained by mixing (1) 100 parts by volume of a heavy fraction oil boiling at not lower than 200.degree. C. and obtained at the time of fluidized catalytic cracking of petroleum with (2) 10 to 200 parts by volume of a fraction boiling in the range of 250.degree. to 550.degree. C. obtained by distilling under reduced pressure an oil produced at the time of heat treating a starting pitch and then heat treating the resulting mixture at a temperature of from 370.degree. C. to 480.degree. C. under a pressure of from 2 to 50 Kg/cm.sup.2.G thereby to obtain the starting pitch for carbon fibers. The thus obtained starting pitch is heat treated to obtain a precursor pitch which is melt spun, infusibilized, carbonized or graphitized to obtain the carbon fibers.

REFERENCES:
patent: 3970542 (1976-07-01), Bongertman
patent: 4231857 (1980-11-01), Kato et al.
patent: 4271006 (1981-06-01), Dickakian
patent: 4397830 (1983-08-01), Uemura et al.

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