Process for modifying coal tar materials

Details Process for modifying coal tar materials Process for modifying coal tar materials

C - Chemistry, Metallurgy

10

C

196/39

C10C 1/18 (2006.01)

Patent

CA 1173773

PROCESS FOR MODIFYING COAL-TAR MATERIALS ABSTRACT The present invention relates to a process for de- creasing and modifying the quinoline-insoluble content (Q.I.) of coal-tar materials; and comprises extracting the coal-tar material with a solvent, where the solvent contains at least one of n-methyl-2-pyrrolidone and the wash oil fraction of coal-tar distillate. Pitches with a diminished Q.I. content, lower viscosity and lower average Q.I. particle size, may be prepared from coal-tar materials which have been so treated.

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