Process for increasing pitch yield from coal tar

Details Process for increasing pitch yield from coal tar Process for increasing pitch yield from coal tar

1992-02-07

1993-11-30

Morris, Theodore

Mineral oils: processes and products

Products and compositions

Asphalts, tars, pitches and resins

208 42, 208 44, 201 20, C10C 100, C10C 120, C10C 104

Patent

active

052661849

ABSTRACT:
Described is a preferred process for obtaining an increased pitch yield from the distillation of crude coal tar material. The process includes treating a crude coal tar material by reaction with formaldehyde, followed by distillation of the coal tar to afford a yield of coal tar pitch which is significantly increased over that obtained without the formaldehyde treatment.

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