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:
Apr. 30, 2013
Filed:
Apr. 16, 2009
Applicants:
Peter Hannen, Recklinghausen, DE;
Martin Roos, Haltern am See, DE;
Harald Haeger, Luedinghausen, DE;
Inventors:
Peter Hannen, Recklinghausen, DE;
Martin Roos, Haltern am See, DE;
Harald Haeger, Luedinghausen, DE;
Assignee:
Evonik Degussa GmbH, Essen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/353 (2006.01); C07C 51/43 (2006.01); C07C 51/44 (2006.01); C07C 57/13 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a method for producing 1,2-dodeca-2,10-diene diacid and 1,12-dodecanoic acid whereby cyclooctene and acrylic acid are reacted with a ruthenium catalyst by way of a metathesis reaction at high substrate concentrations until the reaction takes place in substance, the resulting unsaturated dicarboxylic acid being precipitated and being hydrated in a second reaction step.