METHOD FOR PRODUCING METHACRYLIC ACID ESTER AND METHOD FOR SUPPRESSING POLYMERIZATION OF METHACRYLIC ACID

Title:

METHOD FOR PRODUCING METHACRYLIC ACID ESTER AND METHOD FOR SUPPRESSING POLYMERIZATION OF METHACRYLIC ACID

Document Type and Number:

WIPO Patent Application WO/2020/241720

Kind Code:

A1

Abstract:

The present invention provides: a method which is capable of suppressing polymerization of methacrylic acid even if the methacrylic acid is in the coexistence of an extraction solvent such as xylene; and a method for producing a methacrylic acid ester, which comprises the above-described method.　A method for producing a methacrylic acid ester, which comprises heating of a liquid that contains methacrylic acid and an extraction solvent in the presence of a polymerization inhibitor, wherein: the extraction solvent is an aromatic hydrocarbon compound; and the polymerization inhibitor contains an N-oxyl compound.

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Inventors:

KATO RYO (JP)
KOTANI YASUO (JP)

Application Number:

PCT/JP2020/021015

Publication Date:

December 03, 2020

Filing Date:

May 27, 2020

Export Citation:

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Assignee:

KATAYAMA CHEMICAL WORKS CO (JP)

International Classes:

C07C51/50; C07C57/04; C07C67/08; C07C69/54

Foreign References:

JP2002234858A	2002-08-23
JPS4941413B1	1974-11-08