| 摘要 |
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 logbeta<SUB>DBM </SUB>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.
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