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Patent Picks—Microencapsulation, Maillard Reaction and Ether Guanidines for Antiperspirants
By: Rachel L. Grabenhofer
Posted: June 6, 2012
page 4 of 4
Antimicrobial ether guanidines
US Patent Application 2120134948
Publication date: May 31, 2012
Assignee: Evonik Goldschmidt GmbH
The present invention relates to the use of at least one ether guanidine and/or of a salt or hydrate thereof for reducing the growth of microorganisms, and to cosmetic and pharmaceutical formulations comprising them. According to the inventors, surprisingly, it has been found that the ether guanidines have very good antimicrobial properties and can be employed in a very simple manner in cosmetic and/or pharmaceutical preparations. Furthermore, the compounds are distinguished by a selective control of undesired microorganisms, in particular those that colonize the skin. An example antiperspirant spray includes: PEG-40 hydrogenated castor oil, 1.0% w/w; alcohol, 20.0%; betaine, 2.0%; water, 56.3%; ether guanidine, 0.3%; aluminum zirconium tetrachlorohydrate, 20%; and preservative as needed.