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:
Nov. 11, 2003
Filed:
Mar. 13, 2000
Applicant:
Inventors:
Bernd Eck, Viernheim, DE;
Otto Machhammer, Mannheim, DE;
Theo Proll, Bad Dürkheim, DE;
Volker Schliephake, Schifferstadt, DE;
Joachim Thiel, Neustadt, DE;
Klaus Bröllos, Seeheim-Jugenheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 5/142 ; C07C 5/116 ;
U.S. Cl.
CPC ...
C07C 5/142 ; C07C 5/116 ;
Abstract
A process for the fractional condensation of a gas mixture which, in addition to acrylic acid or methacrylic acid, also contains at least one further condensable component and additionally a high proportion of one or more noncondensable components, wherein the gas mixture is passed through a column having separatory internals and the condensable components are condensed by cooling.