Use of hot buoyant liquid to convert pitch to continuous carbon

Details Use of hot buoyant liquid to convert pitch to continuous carbon Use of hot buoyant liquid to convert pitch to continuous carbon

1974-11-21

1976-08-03

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Filaments

264178F, 264DIG19, 4234478, B01D 4700, C01B 3100, C01B 3102, C01B 3104

Patent

active

039729680

ABSTRACT:
Suitable pitch is formed into a filament continuously and upward by various means located at the bottom of a vessel containing a hot buoyant liquid. The liquid buoys up the fragile filament as it ascends the vessel from a lower region held at one temperature to an upper region where the temperature is about 450.degree.-700.degree.C. The filament emerges upward out of the liquid to move further through a still higher temperature (>900.degree.C) zone which upon leaving the previously formed pitch is a carbon filament. The liquid can be a blend of suitable molten inorganic salts or a molten inorganic oxide.

REFERENCES:
patent: 3347959 (1967-10-01), Engelke et al.
patent: 3448185 (1969-06-01), Sims
patent: 3461197 (1969-08-01), Lemelson
patent: 3508871 (1970-04-01), Corg
patent: 3595946 (1971-07-01), Joo et al.
patent: 3755526 (1973-08-01), Watanabe

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