Process for purification of 1,2-unsaturated carboxylic acids and

Details Process for purification of 1,2-unsaturated carboxylic acids and Process for purification of 1,2-unsaturated carboxylic acids and

1984-06-22

1986-11-25

Lone, Werren B.

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

Organic compounds

Carboxylic acids and salts thereof

562532, 562534, 562535, 562545, 562546, 562547, 560218, C07C 5148

Patent

active

046250590

ABSTRACT:
A 1,2-unsaturated carboxylic acid or its ester such as acrylic or methacrylic acid or its alkyl ester is purified to remove aldehyde impurities contained therein by treating the acid or its ester with a mercapto containing compound in the presence of an acid catalyst.

REFERENCES:
patent: 3725208 (1973-04-01), Maezawa et al.
patent: 3893895 (1975-07-01), Dehnert et al.

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