Continous esterification of carboxylic and fatty acids in the ab

Details Continous esterification of carboxylic and fatty acids in the ab Continous esterification of carboxylic and fatty acids in the ab

1990-12-21

1994-09-20

Dees, Jose G.

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

Organic compounds

Fatty compounds having an acid moiety which contains the...

550172, 550173, 560205, 560224, 560231, 560263, 560265, C11C 300

Patent

active

053490754

ABSTRACT:
The invention provides a process for the esterification of a C.sub.2 -C.sub.24 monocarboxylic acid with a C.sub.1 -C.sub.5 monoalcohol in a reactor at an increased reaction temperature and increased pressure which is carried out in the absence of any esterification catalyst while continuously feeding in the alcohol during the reaction and removing a gaseous alcohol/water mixture. Preferably the process is carried out in countercurrent in column reactor which is packed or contains plates. The reaction temperature is usually between 200.degree. C. and 260.degree. C. at a pressure between 0.5 and 1.5 MPa. There is a C.sub.6 -C.sub.20 monocarboxylic acid and monoalcohol a C.sub.1 -C.sub.3 monoalcohol. More preferably the process is carried in two steps with a first step as described above and a second step in which further reaction to a conversion of at least 99% is carried out in the presence of an esterification catalyst at a temperature below 100.degree. C.

REFERENCES:
patent: 4314947 (1982-02-01), Hohenschutz
patent: 4868329 (1989-09-01), Powando et al.
patent: 5008046 (1991-04-01), Bremus et al.
Chemical Abstracts, 72(6)22792y.

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