Processes for making novel aluminum chlorhydroxide complexes

Details Processes for making novel aluminum chlorhydroxide complexes Processes for making novel aluminum chlorhydroxide complexes

C - Chemistry, Metallurgy

01

F

23/134, 167/312

C01F 7/00 (2006.01)

Patent

CA 1163418

ABSTRACT OF THE DISCLOSURE A process for substantially improving the antiperspirant efficacy of aluminum chlorhydroxide, the process comprising aging, at a temperature below 100°C, the aluminum chlorhydroxide in an aqueous medium, at a concentration of from 5 to 40 weight percent, until the aluminum chlorhydroxide comprises at least 45 weight percent of an AlC' group of complexes. The AlC' group of complexes being characterized by having a diffusion constant in gel permeation chromatography within that range generally found for the Alb group of complexes, by exhibiting a complexing rate in the ferron test in the range of the AlC group of complexes, of at least about three days for completion of the reaction, and by at least 98 weight percent of the molecules ° within the AlC' group of complexes being less than 100 A in size in aqueous solutions.

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