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:
Jul. 31, 2000
Applicant:
Inventors:
Dominik Dempf, Burghausen, DE;
Thomas List, Neumarkt St. Veit, DE;
Wolfgang Deinhammer, Burghausen, DE;
Georges Heyen, Embourg, BE;
Assignee:
Wacker Chemie GmbH, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 4/567 ;
U.S. Cl.
CPC ...
C07C 4/567 ;
Abstract
The invention provides a process for preparing 1,3-diketones by rearrangement of the isomeric enol ester in a tube reactor comprising a heated portion and an unheated insulated portion which can optionally be provided with cooling means. The unheated portion of the reactor has a higher volume to surface ratio than the heated portion of the reactor. The reaction can be carried out adiabatically in the unheated portion of the reactor. The process and apparatus provide higher yields and selectivity to the 1,3-diketones.