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:
Oct. 30, 2001
Filed:
Mar. 23, 2000
Applicant:
Inventors:
Wilhelm Keim, Aachen, DE;
Armin Kraus, Aachen, DE;
Rainer Hahn, Karlstein, DE;
Klaus Huthmacher, Geinhausen, DE;
Assignee:
Degussa AG, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 4/500 ;
U.S. Cl.
CPC ...
C07C 4/500 ;
Abstract
The present application refers to a process for preparing 6,10- and 6,9-dimethyl-5,10-undecadienyl-2-ones by telomerizing isoprene with alkyl acetoacetates in the presence of a catalyst system containing a transition metal compound catalyst and a phosphorus- or arsenic-containing compound cocatalyst, wherein the process is performed in the presence of a protic additive of the general formula