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:
Apr. 09, 2013
Filed:
Apr. 29, 2010
Markus Winterberg, Datteln, DE;
Alfred Kaizik, Marl, DE;
Armin Rix, Marl, DE;
Michael Grass, Haltern am See, DE;
Wilfried Bueschken, Haltern am See, DE;
Marc Becker, Dortmund, DE;
Markus Winterberg, Datteln, DE;
Alfred Kaizik, Marl, DE;
Armin Rix, Marl, DE;
Michael Grass, Haltern am See, DE;
Wilfried Bueschken, Haltern am See, DE;
Marc Becker, Dortmund, DE;
Evonik Oxeno GmbH, Marl, DE;
Abstract
The invention is a method for processing a mixture containing water, 3-methyl-1-butane and at least one other methylbutene. The method comprises primary distillation of the mixture, giving a gaseous primary overhead product containing methylbutene and water and a water-free primary bottom product containing 3-methyl-1-butene; condensation of the gaseous primary overhead product so as to give a condensate comprising a liquid aqueous phase and a liquid organic phase; separation of the condensate into a liquid aqueous phase and a liquid organic phase; discharge of the liquid aqueous phase; recirculation of the organic phase to the primary distillation; and finally secondary distillation of the water-free primary bottom product from the primary distillation so as to give a secondary overhead product comprising 3-methyl-1-butene and a secondary bottom product. The secondary overhead product obtained has a purity which enables it to be used directly as monomer or comonomer for preparing polymers or copolymers.