The Gillette Company

Other

Stephen J Provancal

Alan M Phipps

David T Callaghan

Richard Oryszczak

Jayant N Sane

Angel L Carrillo

Thomas J Fluhler

Nancy M Karassik

Philip P Angelone, Jr

Yanfei Shen

A method of making an antiperspirant powder is provided, including mixing a silicone rubber powder solution with an antiperspirant salt in a liquid carrier to form a uniform liquid mixture; and drying the liquid mixture to form an antiperspirant powder.

Method of making antiperspirant powders

The present invention comprises a process of preparing a solution of an enhanced efficacy aluminum antiperspirant salt in a polyhydric alcohol by

Method of making polyhydric alcohol solutions of enhanced efficacy

A composition of zirconyl hydroxy chloride and aluminum chlorhydroxide in stable solid form having improved antiperspirant efficacy when dissolved in water is made by heating a 2-20% by weight aqueous solution containing at least the aluminum chlorhydroxide component of the composition at a temperature of at least 50.degree. C. until the ratio of the height of peak 4 at Kd=0.7 to that of peak 3 at Kd=0.5 as measured by gel permeation chromatography on cross-linked dextran is at least 2:1, then subjecting the solution to rapid drying to solid form.

Antiperspirant composition

A composition of zirconyl hydroxy chloride and aluminum chlorhydroxide in stable solid form having improved antiperspirant efficacy when dissolved in water is made by heating a 2-20% by weight aqueous solution containing at least the aluminum chlorhydroxide component of the composition at a temperature of at least 50.degree. C. until the ratio of the height of peak 4 at Kd=0.7 to that of peak 3 at Kd=0.5 as measured by gel permeation chromotography on cross-linked dextran is at least 2:1, then subjecting the solution to rapid drying to solid form.

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Addison, IL, United States of America

Stephen J Provancal