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. 14, 2008
Filed:
May. 12, 2003
Ludwig Deibele, Köln, DE;
Dieter Heinz, Leverkusen, DE;
Jan Thomas Leu, Leichlingen, DE;
Johannes-peter Schäfer, Kürten, DE;
Kai Fahrenkamp, Leverkusen, DE;
Wolfgang Scheinert, Leverkusen, DE;
Thomas Schilling, Monheim, DE;
Paul Wagner, Düsseldorf, DE;
Ludwig Deibele, Köln, DE;
Dieter Heinz, Leverkusen, DE;
Jan Thomas Leu, Leichlingen, DE;
Johannes-Peter Schäfer, Kürten, DE;
Kai Fahrenkamp, Leverkusen, DE;
Wolfgang Scheinert, Leverkusen, DE;
Thomas Schilling, Monheim, DE;
Paul Wagner, Düsseldorf, DE;
LANXESS Deutschland GmbH, Leverkusen, DE;
Abstract
The invention relates to a semibatchwise process for the mild distillative separation of mixtures, in a first stage a column being supplied continuously with a feed and the feed being separated at least into different fractions, one of the fractions being removed continuously into a container, and, in a second step, the fraction removed into the container being recycled to the column and being separated again batchwise into different fractions.