The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2012
Filed:
Aug. 21, 2008
Glenn A. Miller, South Charleston, WV (US);
Jeffrey S. Sawrey, Westford, MA (US);
Christopher W. Derstine, Midland, MI (US);
Glenn A. Miller, South Charleston, WV (US);
Jeffrey S. Sawrey, Westford, MA (US);
Christopher W. Derstine, Midland, MI (US);
Abstract
A process of hydrogenating an aliphatic dialdehyde, preferably, a C-Calicyclic dicarboxaldehyde, to form an aliphatic diol, preferably, a C-Calicyclic diol, most preferably, cis/trans-(1,3)(1,4)-cyclohexanedimethanol. The process involves contacting one or more aliphatic dialdehydes in a liquid phase with hydrogen in the presence of a hydrogenation catalyst in a hydrogenation zone and in the presence of water in an amount equal to or greater than 10 weight percent, based on the weight of the total liquid feed to the hydrogenation. The alicyclic dicarboxaldehyde is preferably prepared via hydroformylation of an olefin with subsequent extraction of the alicyclic dicarboxaldehyde product from the hydroformylation product fluid.