METHOD FOR PRODUCTION OF BUTYL ESTERS OF FATTY ACIDS Russian patent published in 1997 - IPC

FIELD: processing of vegetable materials and petroleum products. SUBSTANCE: esterification is carried out by boiling of reaction mixture at 60-140 C at atmospheric or reduced pressure (not less 8.6 kPa), molar ratio of fatty acids, catalyst and butyl alcohol being 1:(0.01-0.025):(1.2-2) respectively. The process is carried out within 1.5-4 h in atmosphere of inert gas or hydrogen, it is followed by esterification of unreacted acids by 3-6 % of aqueous-alkali solution and by washing of butyl esters with water. Yield of thus prepared butyl esters of fatty acids is 90-99 %. EFFECT: improves quality of desired butyl esters, decreases energy expense.