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Continuous high temperature preparation of alkylolamides
Author(s) -
Monick J. A.
Publication year - 1962
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02635822
Subject(s) - diethanolamine , catalysis , chemistry , nuclear chemistry , analytical chemistry (journal) , chromatography , organic chemistry
Lauric diethanolamide was prepared from methyl laurate and diethanolamine in the presence of an alkaline catalyst by a continuous high temperature process. The conventional batch process requires cycle times of 2舑6 hr which can lead to undesirable by‐products. With a reaction time of about 10 sec, product purity of 91舑94% was obtained at 149C for an absolute pressure range of 10舑760 mm Hg. When reaction temperature was lowered to 110C, product purity became poorer as the absolute pressure was increased from 30 mm Hg to 760 mm Hg. Two studies for optimum catalyst content of either KOH or sodium methylate showed that maximum product purity of about 97% was obtained at 0.20% catalyst by weight.