Process for making mesophase pitch

Details Process for making mesophase pitch Process for making mesophase pitch

1986-01-30

1991-03-12

Chaudhuri, Olik

Mineral oils: processes and products

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

208 22, 208 44, 4234472, 4234474, 4234476, 264292, C10C 304

Patent

active

049990993

ABSTRACT:
An improved process for producing an anisotropic pitch product suitable for carbon fiber manufacture. A carbonaceous feedstock is heated at elevated temperature while passing a reactive sparging gas through the feedstock. The sparging gas is an oxidative gas such as a gaseous mixture containing a major proportion of inert gas and from about 0.1 to 2% by volume of oxygen. The process produces an anisotropic pitch having from 50 to 100% by volume mesophase which is suitable for producing good quality carbon fibers.

REFERENCES:
patent: 3004862 (1961-10-01), Winslow
patent: 3595946 (1971-07-01), Joo et al.
patent: 3919376 (1975-11-01), Schulz
patent: 4066737 (1978-01-01), Romevacek
patent: 4184942 (1980-01-01), Angler et al.

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