Process for preparing polyol polyesters having low levels of...

Details Process for preparing polyol polyesters having low levels of... Process for preparing polyol polyesters having low levels of...

C - Chemistry, Metallurgy

07

H

C07H 13/06 (2006.01) C07C 67/03 (2006.01) C07C 69/58 (2006.01) C08B 37/00 (2006.01)

Patent

CA 2186464

A process for preparing polyol fatty acid polyesters having levels of triglyceride below 0.5 % is described. Methyl esters having a level of monoglycerides below 500 ppm, a nondetectable level of di- and triglyceride and a glycerine level of less than about 200 ppm are prepared and then used in a two-stage, solvent-free transesterification reaction to prepare the polyol fatty acid polyesters.

L'invention concerne un procédé de préparation de polyesters d'acides gras et de polyols contenant moins de 0,5 % de triglycérides. On prépare des esters méthyliques contenant moins de 500 ppm de monoglycérides, un niveau non détectable de di- et de triglycérides et moins d'environ 200 ppm de glycérine. Ces esters sont utilisés dans une réaction de trans-estérification en deux étapes et sans solvant, pour préparer des polyesters de polyols et d'acides gras.

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