Reheis, Inc.

Roger E Nelson

Andrew M Rubino

Robert W Murray

Two-thirds to five-sixths basic aluminum chlorides having enhanced antiperspirant efficacy are produced by heating an aqueous solution containing about 40 to about 50 weight percent of the basic aluminum chloride to a temperature of at least about 130 degrees C. for about one to twelve hours in a closed vessel, with the heating time being inversely proportional to the temperature. Five-sixths basic aluminum chlorides treated in this manner are characterized by a size exclusion chromatogram having a single major peak with its apex at a relative retention time of about 0.75-0.79. The basic aluminum chlorides may be incorporated into any of the conventional antiperspirant forms with non-toxic, dermatologically acceptable carriers.

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Hatfield, PA, United States of America

Roger E Nelson