Process for isolating methacrylic acid by extraction

Details Process for isolating methacrylic acid by extraction Process for isolating methacrylic acid by extraction

1980-07-17

1985-08-06

Garner, Vivian

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

Organic compounds

Carboxylic acids and salts thereof

562532, 562535, 562538, 562545, C07C 5148, C07C 5705, C07C 57055

Patent

active

045337500

ABSTRACT:
A process for isolating methacrylic acid by solvent extraction from an aqueous methacrylic acid solution obtained from a gas phase catalytic oxidation reaction, characterized in that the aqueous methacrylic acid solution is previously first contacted with an extraction solvent, polymers precipitated out from the aqueous methacrylic acid solution are removed and the remainder is fed into an extraction column.

REFERENCES:
patent: 3478093 (1969-11-01), Nonnenmacher et al.
patent: 3781332 (1973-12-01), Sato et al.
patent: 3968153 (1976-07-01), Ohrui et al.
Frolov et al., Chemical Abstracts, vol. 60, No. 4, 4012f, 1964, Columbus, Ohio:Extraction of Methacrylic Acid from Solutions.

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