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:
Dec. 17, 2013
Filed:
Jul. 16, 2010
Joaquim Henrique Teles, Otterstadt, DE;
Hans-georg Göbbel, Kallstadt, DE;
Peter Baβler, Viernheim, DE;
Philip Kampe, Lorsch, DE;
Kai Gumlich, Mannheim, DE;
Christian Bartosch, Mannheim, DE;
Ulrich Müller, Neustadt, DE;
Richard Jacubinas, Bloomfiled, NJ (US);
Natalia Trukhan, Ludwigshafen, DE;
Meinolf Weidenbach, Drochtersen, DE;
Martin Cogswell, Camlachin, CA;
Joaquim Henrique Teles, Otterstadt, DE;
Hans-Georg Göbbel, Kallstadt, DE;
Peter Baβler, Viernheim, DE;
Philip Kampe, Lorsch, DE;
Kai Gumlich, Mannheim, DE;
Christian Bartosch, Mannheim, DE;
Ulrich Müller, Neustadt, DE;
Richard Jacubinas, Bloomfiled, NJ (US);
Natalia Trukhan, Ludwigshafen, DE;
Meinolf Weidenbach, Drochtersen, DE;
Martin Cogswell, Camlachin, CA;
BASF SE, Ludwigshafen, DE;
The Dow Chemical Company, Midland, MI (US);
Abstract
A method for separating acetonitrile from water, comprising (i) providing a stream Scontaining at least 95 wt.-%, based on the total weight of S, acetonitrile and water, wherein the weight ratio of acetonitrile: water is greater than 1; (ii) adding a stream P, comprising at least 95 wt.-% C3, based on the total weight of stream P, to Sto obtain a mixed stream S, C3 being propene optionally admixed with propane with a minimum weight ratio of propene: propane of 7:3; (iii) subjecting Sto a temperature of 92° C. at most and a pressure of at least 10 bar, obtaining a first liquid phase Lessentially consisting of C3, acetonitrile, and water, and a second liquid phase Lessentially consisting of water and acetonitrile wherein the weight ratio of acetonitrile: water in Lis less than 1; (iv) separating Lfrom L