C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
C01F 7/74 (2006.01)
Patent
CA 2109756
IMPROVED BASIC ALUMINUM HYDROXYCHLOROSULFATE PROCESS AND PRODUCT THEREFROM ABSTRACT OF THE DISCLOSURE A process for preparing an aluminum hydroxychlorosulfate (BACS) is disclosed which comprises heating a solution of a basic aluminum chloride, wherein the concentration of Al+3 is about 4.0 to about 12.5 wt.%, to a temperature of about 75 to about 98° C: adding a sulfate anion containing compound selected from the group consisting of sulfuric acid, aluminum sulfate and mixtures there- of, at a controlled rate, in an amount such that the molar ratio of sulfate ion to aluminum in the reaction mixture is about 0.05 to about 0.20, the sulfate ion addition being carried out at a controlled rate, the temperature of the reaction being maintained at a temperature of about 75° to about 98° C two to about 24 hours after the completion of the addition of sulfate ion. A further improvement in the efficaciousness of the product is achieved by introducing iron and calcium ions into the BACS.
Giovanniello Rocco
Treuting Anton
Giovanniello Rocco
Gowling Lafleur Henderson Llp
Treuting Anton
LandOfFree
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