Patent ID: 6099654
Filing Date: 2000-08-08
Classification: C07C

Abstract:
A process for recovering betaine from a starting solution material in the form of a) waste produced in the course of separation and recovery of sucrose from sugar beet extract or sugar beet molasses with a 2-component separation simulated moving bed chromatographic separator using a strongly acidic cation exchange resin in a salt form as chromatographic packing or b) a concentrate of said waste; said process comprising Step 1 of separating a demineralized crude betaine fraction from said starting solution material with a 2-component separation simulated moving bed chromatographic separator using as chromatographic packing a strongly acid cation exchange resin in an ionic form equilibrated with ions of said starting solution material, and Step 2 of separating and recovering a betaine fraction from said crude betaine fraction or its concentrate with a 2-component separation simulated moving bed chromatographic separator using as chromatographic packing a strongly acidic cation exchange resin having at least 10% (based on the ion exchange capacity) of the ionic form thereof changed to the Ca form.