A method for the preparation of esters of the sparingly volatile alcohols trismethylolpropan, tris meth xylene ethane and pentaerythritol with native fatty acids

摘要

One-pot process for the preparation of esters of sparingly volatile alcohols in the form of (tmp) trismethylolpropan, (tme) tris meth xylene ethane and pentaerythritol, native fatty acids, in which unpurified natural oils and fats, first of all under the addition of an alkaline catalyst to a crude ester - an intermediate product of such alcohols are reacted with respect to the or the used sparingly volatile alcohols are more easily volatile and in which in the course of the transesterification of glycerol is deposited as a removable phase, and the resulting crude ester - an intermediate product after separation of the glycerine phase, which are not of catalyst residues, as well as residues of glycerol, mono -, di - and triglycerides, waxes, fatty acid soaps and phosphates is freed directly with the or the sparingly volatile alcohols alkaline catalyzed and is transesterified in this case, the formed during the reaction is removed, the more readily volatile alcohol, wherein in the case of a native oils and fats with an increased acid number and / or in the case of the latter is not dried use of the reaction for the crude ester - an intermediate product takes place in a plurality of stages, wherein the catalyst, reaction is carried out several times in succession and glycerol removal and be carried out under an inserted excess of the amount of the catalyst is from 0,01..