Natural cresylic acid processing

Details Natural cresylic acid processing Natural cresylic acid processing

1993-07-02

1994-10-11

Manoharan, Virginia

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 64, 203 78, 203DIG9, 568751, 568756, 568759, 568761, B01D 314, B01D 340, C07C 3774, C07C 3780

Patent

active

053544293

ABSTRACT:
A discrete impure cresylic acid distillate fraction derived by fractional distillation of a natural cresylic acid feedstock from which tar bases and/or neutral oils have not been removed is subjected to extractive distillation with a polyhydric alcohol extractant and subsequent separation of the discrete cresylic acid fraction. The extractive distillation removes tar bases, neutral oils, undesirable phenolic substances, sulfur compounds, color-forming impurities and odor-imparting impurities.

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