Preparation of antiperspirants

Details Preparation of antiperspirants Preparation of antiperspirants

C - Chemistry, Metallurgy

01

F

23/159, 23/164,

C01F 7/56 (2006.01) C01F 7/48 (2006.01) C01G 25/00 (2006.01) A61K 7/34 (1990.01) A61K 7/38 (1990.01)

Patent

CA 1297657

J3046 ABSTRACT The disclosure concerns a process for the manufacture of aluminium zirconium halohydrate having an aluminium:zirconium molar ratio of from 2:1 to 7:1 and having a metal:chlorine molar ratio of from 0.9:1 to 2.1:1. Metallic aluminium is dissolved in an aqueous starting solution comprising an oxyhalide, hydroxyhalide or carbonate of zirconium and an aluminium halide or basic aluminium halide, which solution is heated at about 50°C to 105°C. The solution of the final aluminium zirconium halohydrate has a concentration of metal of 0.5 to 2.3 moles/kg and a size exclusion chromatogram of which the Band III proporition is at least 20%.

543864

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