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:
Sep. 23, 2008
Filed:
Oct. 15, 2004
Applicants:
Simon Peter Crabtree, Durham City, GB;
Derek Vincent Tyers, Thirsk, GB;
Mohammed Sharif, Middlesborough, GB;
Inventors:
Simon Peter Crabtree, Durham City, GB;
Derek Vincent Tyers, Thirsk, GB;
Mohammed Sharif, Middlesborough, GB;
Assignee:
Davy Process Technology Limited, London, GB;
Primary Examiner:
Int. Cl.
CPC ...
C07D 207/00 (2006.01); C07D 307/20 (2006.01); C07C 31/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A homogeneous process for the hydrogenation of dicarboxylic acid and/or derivative thereof with an amine in the presence of a catalyst comprising: (a) ruthenium or osmium; and (b) an organic phosphine; and wherein the hydrogenation is carried out in the presence of water.