Patent ID: 8524192
Filing Date: 2013-09-03
Classification: A61K,C01F,C01P,C09C

Abstract:
1. A method of producing an aluminum hydroxide gel particle, comprising the steps of: (1) adding a chelating agent to a soluble aluminum salt aqueous solution to obtain a soluble aluminum salt aqueous solution containing a complex; (2) reacting an aqueous solution of an alkali metal carbonate or an ammonium carbonate with the soluble aluminum salt aqueous solution containing the complex in a molar ratio (CO (3) carrying out solid-liquid separation of the reaction product to obtain a cake; (4) bringing the cake into contact with an aqueous solution of at least one ion exchange agent selected from the group consisting of an inorganic acid and a water-soluble aluminum salt to obtain an ion-exchanged cake; and (5) drying the ion-exchanged cake.