Preparation of acetic acid

Details Preparation of acetic acid Preparation of acetic acid

2006-08-22

2009-02-03

Oh, Taylor Victor (Department: 1625)

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

Organic compounds

Carboxylic acids and salts thereof

Reexamination Certificate

active

07485749

ABSTRACT:
A method for removing aldehyde impurities from an acetic acid stream is disclosed. The method comprises reacting aldehyde impurities with a hydroxyl compound in a drying distillation column or a combined column to form corresponding acetals. The acetals are subsequently removed as heavy impurities from acetic acid by distillation.

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