Process for producing methacrylic acid esters

Details Process for producing methacrylic acid esters Process for producing methacrylic acid esters

1989-10-04

1991-12-10

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

C07C 6702

Patent

active

050720279

ABSTRACT:
In a process for producing a methacrylic acid ester by subjecting methyl methacrylate and an alcohol to a transesterification reaction in the presence of a catalyst and a polymerization inhibitor, the filtration time of catalyst and the like can be shortened by making a total water content in the catalyst, alcohol and methyl methacrylate 1000 ppm or less, or the generation of large bubbles during the reaction can be prevented by adding the starting alcohol to the reaction system at the alcohol conversion of 40% or more, or high catalytic activity is obtained even if a secondary or tertiary alcohol is used as a starting material by using as a catalyst that obtained by drying lithium hydroxide monohydrate with heating, these effects being also obtained by combining individual conditions.

REFERENCES:
patent: 4791221 (1988-12-01), Gabillet
patent: 4916255 (1990-04-01), Kobayashi

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