Process of preparing alkylpolysaccharides
AssigneeThe Procter & Gamble Company
InventorsMark H. K. Mao, Larry E. Miller, John M. Weeman
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Abstract
Long chain fatty alcohols can be removed from alkylpolysaccharide products in thin film evaporators to achieve fatty alcohol levels of less than about 2% without excessive discoloration of the alkylpolysaccharide.
Claims5
In the process of removing fatty alcohol containing from about 12 to about 18 carbon atoms from a mixture of said alcohol with an alkyl polysaccharide wherein saccharide chain length is greater than one on the average and less than about 20 the improvement of heating the mixture under vacuum in a thin film evaporator wherein the thin film evaporator provides, in operation, a Reynolds number of at least about 20,000 and a film thickness of less than about 10 mm and the temperature is from about 120.degree. C. to about 200.degree. C. and the vacuum is from about 0.1 to about 20 mm of mercury so that no more than about 2% of said fatty alcohol remains.
Dependencies are inferred from the claim text.