The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 1996
Filed:
Jul. 22, 1994
Patrick M McCurry, Jr, Lansdale, PA (US);
Janet R Varvil, West Chester, OH (US);
Carl E Pickens, Fairfield, OH (US);
Henkel Corporation, Plymouth Meeting, PA (US);
Abstract
A process has been discovered for making alkyl polyglycoside which comprises reacting a fatty alcohol having from about 8 to about 22 carbon atoms with a sugar, in the presence of an acid catalyst, to form a product of alkyl polyglycoside and excess fatty alcohol. The molar ratio of fatty alcohol to sugar, respectively, is at least 2:1. The excess fatty alcohol is then separated from the alkyl polyglycoside product. Once separated, the excess fatty alcohol is then reacted with a source of boric acid to form a mixture comprised of one or more borate esters of the fatty alcohol and inert compounds. The non-hydroxylic compounds are then separated from the borate esters. The substantially pure fatty alcohol is then returned to the beginning of the process for use in the formation of alkyl polyglycoside.