Patent ID: 6149897
Filing Date: 2000-11-21
Classification: A61K,A61Q

Abstract:
A process for making anhydrous compositions containing solubilized, enhanced antiperspirant active, which process comprises the steps of:(A) heating an aqueous solution comprising from about 24% to about 55% by weight of a solubilized, non-enhanced, aluminum-containing antiperspirant active at a temperature of from 120.degree. C. to about 200.degree. C. for a period of time of from about 1 minute to about 15 minutes to form a solubilized, enhanced, aluminum-containing antiperspirant active;(B) adding a zirconium-containing antiperspirant active to the heated solution to provide the solution with a range of from about 24% to about 60% by weight of the combined solubilized zirconium-containing and aluminum-containing antiperspirant actives;(C) adding an anhydrous solvent to the zirconium and aluminum-containing solution at a weight ratio of the anhydrous solvent to the combined zirconium and aluminum-containing antiperspirant actives of from about 1:2 to about 20:1;(D) removing water from the anhydrous solvent-containing solution to form an anhydrous composition containing solubilized, enhanced, zirconium-containing and aluminum-containing, antiperspirant active.