Azeotropic distillation process for separating acetic acid,...

Details Azeotropic distillation process for separating acetic acid,... Azeotropic distillation process for separating acetic acid,...

2006-07-11

2008-12-23

Sullivan, Daniel M (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

C562S414000

Reexamination Certificate

active

07468456

ABSTRACT:
An improved process for producing an aromatic carboxylic acid from an aromatic alkyl hydrocarbon is described, wherein the improvement comprises using the same aromatic alkyl hydrocarbon as the azeotropic agent for separation of acetic acid and methyl acetate from water via azeotropic distillation. The process of this invention has considerable advantages over other known processes, particularly in regards to consumption of the azeotropic agent and utilities, formation of undesirable impurities and operating costs.

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