Method for producing mesophase pitch

Details Method for producing mesophase pitch Method for producing mesophase pitch

1983-06-24

1985-07-16

Gantz, D. E.

Mineral oils: processes and products

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

Chemical modification of asphalt, tar, pitch or resin

208 22, 208 39, 208 40, 4234472, C10C 300

Patent

active

045294984

ABSTRACT:
A method for producing a 100% mesophase pitch composed only of Q.I. and Q.S. components is provided. This method comprises subjecting petroleum-origin pitch to heat treatment with stirring under a stream of a hydrocarbon gas of small carbon atom numbers at atmospheric or superatmospheric pressure, holding said heat-treated pitch in quiescent state to melt and coalesce only the mesophase therein and dividing and separating non-mesophase and mesophase layers. Resulting 100% mesophase enables us to produce high strength, high modulus carbon fibers.

REFERENCES:
patent: 3928170 (1975-12-01), Takahashi
patent: 3974264 (1976-08-01), McHenry
patent: 3976729 (1976-08-01), Lewis et al.
patent: 4005183 (1977-01-01), Singer
patent: 4026788 (1977-05-01), McHenry
patent: 4032430 (1977-06-01), Lewis
patent: 4209500 (1980-06-01), Chwastiak
patent: 4303631 (1981-12-01), Lewis et al.
patent: 4317809 (1982-03-01), Lewis et al.

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