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United States of America Patent
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Feb 13, 1990
Grant Date -
N/A
app pub date -
Aug 5, 1987
filing date -
Aug 11, 1986
priority date (Note) -
Expired
status (Latency Note)
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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.degree. C. to 105.degree. 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%.
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