Method for separating a mixture of colloidal aluminosilicate particles
AssigneeEastman Kodak Company
InventorOlivier J. Poncelet
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Abstract
The invention relates to a method for separating a mixture of aluminosilicates, wherein said method consists in carrying out an ultrafiltration of a solution of colloidal aluminosilicate particles so as to obtain a permeate and a retentate, and an imogolite like fibrous aluminosilicate polymer of high purity with an Al:Si molar ratio between 1.8 and 2.5 is obtained in the retentate, and allophanes like spherical aluminosilicate particles are obtained in the permeate.
Claims8
A method for separating a mixture of colloidal aluminosilicate particles in aqueous dispersion, comprising the step of passing said mixture through an ultrafiltration unit whereby a permeate and a retentate are obtained, and an imogolite like fibrous aluminosilicate polymer with an Al:Si molar ratio between 1.8 and 2.5 is obtained in the retentate, and allophane like spherical aluminosilicate particles are obtained in the permeate.
Dependencies are inferred from the claim text.