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:
Mar. 26, 2013
Filed:
Apr. 28, 2009
Burkard Kreidler, Recklinghausen, DE;
Klaus-diether Wiese, Haltern am See, DE;
Dieter Hess, Marl, DE;
Detlef Selent, Rostock, DE;
Armin Boerner, Rostock, DE;
Burkard Kreidler, Recklinghausen, DE;
Klaus-Diether Wiese, Haltern am See, DE;
Dieter Hess, Marl, DE;
Detlef Selent, Rostock, DE;
Armin Boerner, Rostock, DE;
Evonik Oxeno GmbH, Marl, DE;
Abstract
The invention relates to a method for separating 1-butene from C-containing hydrocarbon mixtures, comprising isobutene and 1-butene, by hydroformylation, wherein the catalytic system used is made of one of the transition metals of the group 8 to 10, preferably rhodium, and a bisphosphite ligand of the formula (I), where X is a divalent substituted or unsubstituted bisalkylene or bisarylene group having one or more heteroatom(s), Y is a divalent substituted or unsubstituted bisarylene or bisalkylene group having one or more heteroatom(s), Z is oxygen or NR, and R, R, R, Rare identical or different, substituted or unsubstituted, linked, unlinked or condensed aryl or heteroaryl groups, and Ris hydrogen or a substituted or unsubstituted alkyl or aryl group having one or more heteroatom(s), wherein the bisphosphite ligand of the formula (I) is used in an excess of a molar ratio of 100:1 to 1:1 to the transition metal, and that with a 1-butene conversion of more than 95% less than 5% of the present isobutene is reacted method for separating 1-butene from c-containing hydrocarbon streams by hydroformylation.