METHODS FOR PREPARING 1,3-BUTYLENE GLYCOL
Application 1719/KOLNP/2006 published 2007-05-11, filed 2006-06-21
1,3 butylene glycol, prepared through an intermediate aldol condensation reaction of acetaldehyde, is produced at increased yield efficiencies. The efficiencies are achieved by utilizing an acetaldehyde having low carboxylic concentrations. The aldol condensation takes place in the presence of an alkali agent at a concentration of about 2 ppm to about 10 ppm to produce a 3-hydroxybutanal intermediate product that is hydrogenated in the presence of a Raney nickel catalyst to yield 1,3 butylene glycol at efficiency yields of greater than about 75%.
Applicant
1)CELANESE INTERNATIONAL CORPORATION
:1601 WEST LNJ FREEWAY, DALLAS, TX 75234. U.S.A.
Inventor
1)KENNETH ALLEN WINDHORST 2)RICHARD D. GUAJARDO No of Pages : 10 No of Claims : 13
International Info
Classification: C07C 29/141
Publication Number: WO 2005/068408
Application Date: 2005-01-03
Priority Information
10/753,745 U.S.A. 2004-01-08