Process for preparing precursor pitch for carbon fibers

Details Process for preparing precursor pitch for carbon fibers Process for preparing precursor pitch for carbon fibers

1984-11-21

1986-03-11

Doll, John

Mineral oils: processes and products

Asphalts, tars, pitches and resins; making, treating and...

Chemical modification of asphalt, tar, pitch or resin

208 39, 208 41, 208 22, 4234471, 4234474, C10C 100

Patent

active

045754110

ABSTRACT:
A precursor pitch for the production of carton fibers is obtained by heat-treating a carbonaceous pitch in the form of a thin film having a thickness not larger than 5 mm at a temperature in the range of 250.degree. to 390.degree. C. and under a reduced pressure not higher than 100 mmHg. By melt-spinning this precursor pitch and subjecting the resultant pitch fiber to infusiblization and carbonization and, if required, to subsequent graphitization, there is obtained a high quality carbon fiber.

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