Process for producing 2-hydroxyalkyl acrylates or methacrylates

Details Process for producing 2-hydroxyalkyl acrylates or methacrylates Process for producing 2-hydroxyalkyl acrylates or methacrylates

1981-05-15

1982-12-21

Bascomb, Jr., Wilbur L.

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

Organic compounds

Carboxylic acid esters

560 4, 560218, 202182, 202185A, 203 6, 203 8, 203 59, 203 61, 203 66, 203DIG25, B01D 334, C07C 6726, C07C 6748

Patent

active

043650813

ABSTRACT:
In a process for producing a 2-hydroxyalkyl acrylate or methacrylate which comprises esterifying acrylic or methacrylic acid with an alkylene oxide having 2 to 4 carbon atoms in the presence of an esterification catalyst and distilling the resulting reaction mixture in a distillation column, the improvement wherein the vapor of the ester monomer from the distillation column, while being maintained in the superheated state, is introduced into a condenser of the gas-liquid direct contact type whose inner wall corresponding to its gas inlet portion is kept at a temperature below the boiling point of the ester at the operating pressure, to contact it directly with a concurrently flowing spray liquid of the ester-precooled to a temperature below the boiling point of the ester at the operating pressure, whereby said vapor is condensed to a liquid at said temperature below the boiling point of the ester at the operating pressure.

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patent: 4069242 (1978-01-01), Gurgiolo
patent: 4156633 (1979-05-01), Horlenko et al.
patent: 4188290 (1980-02-01), Graham et al.
patent: 4223160 (1980-09-01), Hess

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