Process for the production of esters from vegetal oils or...

Details Process for the production of esters from vegetal oils or... Process for the production of esters from vegetal oils or...

C - Chemistry, Metallurgy

11

C

C11C 3/10 (2006.01) C07C 67/03 (2006.01)

Patent

CA 2570162

A process for producing esters from vegetal oils and animal fats, comprising the step of transesterification of vegetal oils or animal fats by reaction with an alcohol with low molecular weight in the presence of a catalyst comprising a salt of a carboxylic acid with a metal, wherein the salt of a carboxylic acid with a metal is a salt of a carboxylic acid with a metal selected from the group consisting of metals having a stability constant of the complex with di-benzoyl-methane log~DBM in the range between 8.54 and 10.35, or is a salt with a metal of a carboxylic acid selected from the group consisting of fatty acids.

L'invention concerne un procédé de production d'esters à partir d'huiles végétales et de gras animaux, comprenant une étape de transestérification d'huiles végétales ou de gras animaux par réaction avec un alcool de faible poids moléculaire en présence d'un catalyseur comprenant un sel d'acide carboxylique avec un métal, le sel d'acide carboxylique avec un métal étant un sel d'acide carboxylique avec un métal choisi dans le groupe comprenant des métaux possédant une constante de stabilité du complexe avec di-benzoyl-méthane log.beta.<SB>DBM</SB> dans la plage allant de 8,54 à 10,35, ou un sel avec un métal d'un acide carboxylique choisi dans le groupe comprenant des acides gras.

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