| 摘要 |
Disclosed is a basic aluminum material having enhanced antiperspirant activity, the material having the empirical formula Al2(OH)6-aXa, where 0.5 </= a </= 5.0, and X is a univalent complex oxoanion of nitrogen, chlorine and other halogens, which does not form strong coordination compounds with Al<3><+> so that non-hydrolyzed aqueous monomeric aluminum solutions containing the anion are essentially completely dissociated, and which are readily soluble in water with metallic ions in the solution; and wherein the material is characterized by: (a) size exclusion high performance liquid chromatography peaks corresponding to peak 3 and peak 4 of size exclusion chromatograms formed by HPLC technique; (b) a peak 4 relative area of at least 40%, a peak 3 relative area of less than 50%, the sum of the relative peak 3 and peak 4 areas being at least 50%; and (c) less than 10% chromatographic peaks eluting at shorter retention times than peak 3, corresponding to peaks 1 and 2. c |
