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:
Jan. 06, 2015
Filed:
Oct. 24, 2011
Robert Franke, Marl, DE;
Matthias Beller, Nienhagen, DE;
Ralf Jackstell, Cuxhaven Altenwalde, DE;
Reiko Jennerjahn, Sanitz, DE;
Irene Piras, Alghero, IT;
Robert Franke, Marl, DE;
Matthias Beller, Nienhagen, DE;
Ralf Jackstell, Cuxhaven Altenwalde, DE;
Reiko Jennerjahn, Sanitz, DE;
Irene Piras, Alghero, IT;
Evonik Degussa GmbH, Essen, DE;
Abstract
The invention relates to a method for hydroformylation of unsaturated compounds such as olefins and alkynes using mixtures of synthesis gas (CO/H), in which either the unsaturated compounds and a catalyst are heated to a reaction temperature of 60 to 200° C. and the synthesis gas is then added, or the unsaturated compounds and the catalyst are brought into contact with pure CO at normal temperature in a preformation step, then are heated to reaction temperature and on reaching the reaction temperature the CO is replaced by the synthesis gas. The pressure is 1 to 200 bar and the CO:Hratio in the synthesis gas is in the range from 1:1 to 50:1. The iridium catalyst used comprises a phosphorus-containing ligand in the iridium:ligand ratio in the range from 1:1 to 1:100. With high catalyst activities and low catalyst use, very high turnover frequencies are achieved.