Process for the separation of quinoline-insoluble components fro

Details Process for the separation of quinoline-insoluble components fro Process for the separation of quinoline-insoluble components fro

1979-02-28

1981-03-31

O'Keefe, Veronica

Mineral oils: processes and products

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

Solvent extraction

208309, C10C 118

Patent

active

042591716

ABSTRACT:
Quinoline-insoluble components are separated from coal tar pitch by treating the coal tar pitch which has a softening point of greater than 60.degree. C. (according to the method of Kraemer-Sarnow) with a solvent mixture comprising at least one solvent with paraffinic characteristics and at least one tar solvent, wherein the treatment is carried out at a temperature in the range of 200.degree. to 270.degree. C.

REFERENCES:
patent: 4055583 (1977-10-01), Kolling et al.
patent: 4127472 (1978-11-01), Migitaka et al.

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