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:
Jun. 22, 2004
Filed:
Mar. 19, 2002
Hans Peter Rath, Grünstadt, DE;
Dieter Hahn, Carlsberg, DE;
Gerhard Sandrock, Frankenthal, DE;
Frans van Deyck, Essen, BE;
Bart Vander Straeten, Hever, BE;
Eddy De Vree, Stabroek, BE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
Polyisobutene is prepared by cationic polymerization of isobutene and/or isobutene-containing hydrocarbons in the liquid phase in the presence of a complex of BF and at least one cocatalyst which is preferably chosen from oxygen-containing compounds, the BF /cocatalyst complex being produced in situ by adding BF and cocatalyst to a reaction stream, wherein BF and oxygen-containing cocatalyst are added to the reaction stream via a common binary nozzle comprising an outlet for BF and an outlet for the oxygen-containing cocatalyst. The invention also describes a binary nozzle having a centrally arranged outlet for the catalyst.