“SYSTEMS AND METHOD FOR GENERATION OF ASCORBIC ACID WITH REDUCED COLOR“
Application 449/DELNP/2004 published 2006-03-10, filed 2004-02-25
The present invention describes the synthesis of ascorbic acid with reduced color. The present invention employs palladium catalysts for the synthesis of ascorbic acid from 2-keto-gulonic acid or derivatives of 2-keto-gulonic acid. The palladium catalyst may include an inert support such as, but not limited to, carbon or barium sulfate. Unlike other palladium catalysts, the catalyst of the present invention is active under aqueous conditions suitable for ascorbic acid synthesis. Also described are systems for the conversion of 2-keto-gulonic acid or derivatives of 2-keto-gulonic acid to ascorbic acid in the presence of a solid palladium catalyst and ascorbic acid of reduced color made by the methods of the present invention.
Applicant
EASTMAN CHAMICAL COMPANY
100 NORTH EASTMAN ROAD KINGSPORT, TENNESSEE 37660, UNITED STATES OF AMERICA
Inventor
JOSEPH R. ZOELLER
International Info
Classification: C07D 307/62
Publication Number: WO 03/031427
Application Date: 2002-10-09
Priority Information
NIL60/327,884 U.S.A 2001-10-09