STABLE BUFERED ALUMINUM COMPOSITIONS HAVING HIGH HPLC BANDS III AND IV CONTAINING CALCIUM/STRONTIUM

摘要

A novel aluminum antiperspirant active composition of enhanced efficacy is provided. The composition is activated by both heat and acid and characterized by having high HPLC Band III and high HPLC Band IV, prepared by the addition of an acid such as AlCl3 to (1) the aluminum calcium and/or strontium betaine solutions, where the calcium and/or strontium is derived from a soluble salt such as calcium and/or strontium chloride or nitrate and (2) the aluminum calcium and/or strontium glycine and/or betaine solutions, where calcium and/or strontium is from strongly alkaline calcium/strontium oxide or hydroxide. The novel aluminum compositions derived according to the invention have HPLC Band I of less than 2%; a Band III of at least 20%; a Band III/II ratio of at least about 0.7; and a Band IV of at least 20%.