Process for the preparation of acrylic acid and methacrylic acid

Details Process for the preparation of acrylic acid and methacrylic acid Process for the preparation of acrylic acid and methacrylic acid

1992-09-24

1994-11-08

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

C07C 6702

Patent

active

053629043

ABSTRACT:
This invention relates to a process for the preparation of esters of acrylic or methacrylic acid with alcohols. The process comprises reacting the preformed ester of a C.sub.1 -C.sub.4 monohydric alcohol having only one oxygen function under transesterification conditions with a second alcohol having at least two carbon atoms and at least two oxygen functions in the presence of a catalyst comprising (a) an oxide, hydroxide or nitrate of calcium or barium and (b) a lithium compound LiX wherein X is nitrate, sulphite or carboxylate having more than six carbon atoms such that both (a) and (b) are not nitrate in the same catalyst.

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