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:
Aug. 12, 2003
Filed:
Mar. 14, 2002
Applicant:
Inventors:
Assignee:
Degussa AG, Dusseldorf, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 4/572 ;
U.S. Cl.
CPC ...
C07C 4/572 ;
Abstract
A process for the preparation of methylheptanone and corresponding homologous methyl ketones involves the cross-aldolization of acetone with the corresponding aldehyde. The polar catalyst phase is introduced with acetone and an organic auxiliary solvent phase to form a two phase mixture in the presence of hydrogen. The corresponding aldehyde is then added at temperatures between 40° C. and 200° C. The process can be run in a continuous manner with the polar catalyst phase being recyled after regeneration. The use of the non-polar auxiliary solvent(s) increase yield and selectivity.