Method for producing mesophase continuously

Mineral oils: processes and products – Asphalts – tars – pitches and resins; making – treating and... – Chemical modification of asphalt – tar – pitch or resin

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208 39, 208 40, 208 22, C10C 300, D01F 914

Patent

active

045128740

ABSTRACT:
A method for producing continuously 100% mesophase composed only of Q.I. component and Q.S. component in which a raw material of petroleum origin pitch is subjected continuously to a heat-treatment step in an amount necessary to produce a 100% mesophase taken out from a mesophase-growing and coalescing step, transferring the heat-formed pitch formed in the heat treatment step to a mesophase growing and coalescing step, taking out a definite amount of a non-mesophase pitch from the mesophase growing and coalescing step after stirring and heating treatment to return it to the heat-treatment step to repeat the stirring and heating treatment, and at the same time to take out 100% mesophase having constant properties from the mesophase growing and coalescing step.

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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