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:
Jun. 29, 1982
Filed:
Aug. 24, 1979
Helmut Bahrmann, Hunxe, DE;
Boy Cornils, Dinslaken, DE;
Carl D Frohning, Oberhausen, DE;
Jurgen Weber, Oberhausen, DE;
Ruhrchemie Aktiengesellschaft, Oberhausen, DE;
Abstract
In a process for the preparation of 3-(4-methyl-3-cyclohexen-1-yl) butyraldehyde by hydroformylation of limonene in the presence of a catalyst containing a metal of Group VIII of the Periodic Table, the improvement wherein a rhodium carbonyl complex containing additionally a triphenyl and/or trialkyl phosphine as ligands is used as catalyst and the reaction is conducted at a pressure of 100 to 350 bars and at a temperature of 110.degree. to 160.degree. C., the triphenyl or trialkyl phosphines or mixture thereof being present in an amount of 10 to 50 moles per gram atom of rhodium in the reaction mixture.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile