Process for preparing polyol esters
AssigneeOxea GmbH
InventorsMichael Adamzik, Thomas Müller, Willy Schulz, Heyko Jürgen Schultz
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Abstract
The present invention relates to a process for preparing polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms by partial recycling of the aliphatic monocarboxylic acid removed into the esterification reaction or into subsequent esterification batches.
Claims34
Process for preparing polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms and then working up the reaction mixture by means of steam treatment, characterized in that in a first fraction the aliphatic monocarboxylic acid removed during the preparation of the polyol ester is removed fully or partly from the process, in a second fraction the aliphatic monocarboxylic acid still present in the reaction mixture after reaction has ended is removed and recycled fully back into the esterification reaction, and in a third fraction the residual amount of aliphatic monocarboxylic acid removed in the course of steam treatment of the reaction product is removed fully from the process.
Dependencies are inferred from the claim text.