Starting pitches for carbon fibers

Details Starting pitches for carbon fibers Starting pitches for carbon fibers

1982-04-09

1983-07-05

Vertiz, O. R.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

208 40, 208 22, D01F 912, C10C 302

Patent

active

043917887

ABSTRACT:
A starting pitch for carbon fibers, produced by heat treating at 400.degree.-500.degree. C. under a hydrogen pressure of at least 20 Kg/cm.sup.2.G (1) a heavy fraction oil boiling at not lower than 200.degree. C. obtained at the time of fluidized catalytic cracking of petroleum or (3) a mixture of the heavy fraction oil (1) with (2) a heavy fraction oil boiling at not lower than 200.degree. C. obtained at the time of steam cracking of petroleum, the pitch so produced being heat treated to make precursor pitch therein, melt spun, infusibilized and carbonized or further graphitized to obtain the carbon fibers.

REFERENCES:
patent: 3928170 (1975-12-01), Takahashi et al.
patent: 4320107 (1982-03-01), Oyabu et al.

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