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. 23, 2009
Filed:
Jul. 23, 2003
Applicants:
Peter Bassler, Viernheim, DE;
Hans-georg Goebbel, Kallstadt, DE;
Joaquim Henrique Teles, Otterstadt, DE;
Peter Rudolf, Ladenburg, DE;
Inventors:
Peter Bassler, Viernheim, DE;
Hans-Georg Goebbel, Kallstadt, DE;
Joaquim Henrique Teles, Otterstadt, DE;
Peter Rudolf, Ladenburg, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/14 (2006.01); C07D 301/12 (2006.01); C07D 301/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a continuously operated process for the purification by distillation of the oxirane formed in the oxirane synthesis by reaction of a hydroperoxide with an organic compound, wherein the crude oxirane is separated in a dividing wall column into low-, intermediate- and high-boiling fractions and the oxirane is taken off as intermediate boiler at the side offtake in a concentration of at least 99.9%.