C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 67/08 (2006.01) C07C 67/03 (2006.01) C07C 69/52 (2006.01) C10L 1/00 (2006.01)
Patent
CA 2381394
A process for the esterification of a mixture of fatty acids and triglycerides. The process comprises forming a single phase solution of fatty acids and triglyceride in an alcohol selected from methanol and ethanol, the ratio of said alcohol to triglyceride being 15:1 to 35:1. The solution further comprises a co-solvent in an amount to form the single phase. In a first step, an acid catalyst for the esterification of the fatty acids is added. After a period of time, the acid catalyst is neutralised and a base catalyst for the transesterification of triglycerides is added. After a further period of time, esters are separated from the solution.
La présente invention concerne un procédé d'estérification d'un mélange d'acides gras et de triglycérides. A cet effet on forme une solution monophase d'acides gras et de triglycérides dans un alcool, en l'occurrence méthanol ou éthanol, pour un rapport alcool:triglycéride compris entre 15:1 et 35:1. La solution comprend également une quantité de co-solvant permettant la formation de la monophase. Dans un premier temps, on ajoute un catalyseur acide destiné à l'estérification des acides gras. Au bout d'un certain temps, le catalyseur acide se neutralise et on ajoute un catalyseur basique destiné à la transestérification des glycérides. Les esters se séparent spontanément de la solution au bout d'une autre période.
Biox Corporation
Boocock David Gavin Brooke
Sim & Mcburney
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