Patent ID: 6726841
Filing Date: 2004-04-27
Classification: A23J,B01D,C09H

Abstract:
A method of treating a non-gelatin colloidal encapsulation waste material comprising, a non-gelatin colloidal encapsulation material and at least one contaminant, said method comprising:a) combining the non-gelatin encapsulation waste material with a solvent to form a liquid containing the non-gelatin colloidal encapsulation waste material and said at least one contaminant; b) separating the liquid into a solvent layer and a non-solvent layer; and c) removing said at least one contaminant from at least one of the solvent layer and non-solvent layer to form a non-gelatin colloidal encapsulation material having a higher purity than the non-gelatin colloidal encapsulation material contained in the liquid formed in step (a) as the result of the removal of said at least one contaminant.