Method for the production of fatty acid esters

Details Method for the production of fatty acid esters Method for the production of fatty acid esters

2006-09-19

2006-09-19

Carr, Deborah D. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Fatty compounds having an acid moiety which contains the...

C554S174000

Reexamination Certificate

active

07109363

ABSTRACT:
A method for the production of fatty acid esters of primary and/or secondary alcohols from raw, unpurified oils or fats containing free fatty acids and slimy substances or from waste oils loaded with free fatty acids from the food industry. Acidic catalytic esterification is performed on the free fatty acids along with extensive deactivation of the slimy substances present with respect to the disadvantageous emulsion-forming property thereof, whereby a water-free primary and/or secondary alcohol and a highly acidic hygroscopic catalyst are added to the starting substance in the form of crude oil or fat or waste oil, the reaction product is rinsed with glycol from a prior alkaline transesterification, whereupon alkaline transesterification occurs for the unmodified remaining glyceridically bound fatty acids in the reaction product of the acidic-catalytic esterification process.

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International Search Report issued in connection with PCT/EP01/13957 under date of mailing of May 17, 2002.
Standard-Search RS 107395 issued on Oct. 31, 2001.

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