Process for continuously producing ester of acrylic or methacryl

Details Process for continuously producing ester of acrylic or methacryl Process for continuously producing ester of acrylic or methacryl

1999-06-30

2000-11-14

McKane, Joseph K.

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

Organic compounds

Carboxylic acid esters

C07C 6702

Patent

active

061472522

ABSTRACT:
A process for continuously producing an alkyl ester of acrylic or methacrylic acid by ester interchange reaction represented by the following reaction scheme: ##STR1## wherein R.sup.1 is hydrogen or methyl, R.sup.2 is an alkyl having 1 to 6 carbon atoms, R.sup.3 is an alkyl having 2 to 20 carbon atoms or a mono- or polyhydroxyalkyl having 2 to 20 carbon atoms such that R.sup.2 OH has a boiling point lower than that of R.sup.3 OH. The reaction is continuously carried out in a continuous multi-stage distillation column while simultaneously removing the low-boiling R.sup.2 OH from the reaction zone by distillation, thereby shifting the equilibrium toward the product side to enhance the production of the target alkyl ester.

REFERENCES:
patent: 3686268 (1972-08-01), Jobert et al.
patent: 4202990 (1980-05-01), Murakami et al.

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