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 39, 208 40, 208 22, C10C 100

Patent

active

045294992

ABSTRACT:
A method for producing a 100% mesophase composed only of Q.I. component and Q.S. component is provided. This method comprises forming mesophase by the heat treatment of petroleum-origin pitch, subjecting the heat-formed pitch to a condition of heating under quiescent state to cause only the mesophase in the heat-formed pitch to grow and coalesce, separating only the non-mesophase of the upper layer and repeating the operation of the heat treatment and maintenance of heating under a quiescent state by the separated non-mesophase, as a raw material.

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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