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:
Nov. 06, 2007
Filed:
Apr. 04, 2006
Martin Bohnenpoll, Leverkusen, DE;
Jürgen Ismeier, Forstinning, DE;
Oskar Nuyken, München, DE;
Mario Vierle, München, DE;
Dirk Kurt Schön, Wörthsee, DE;
Fritz Kühn, Nandlstadt, DE;
Martin Bohnenpoll, Leverkusen, DE;
Jürgen Ismeier, Forstinning, DE;
Oskar Nuyken, München, DE;
Mario Vierle, München, DE;
Dirk Kurt Schön, Wörthsee, DE;
Fritz Kühn, Nandlstadt, DE;
Basf Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The present invention relates to a process for the production of highly reactive polyisobutenes with a content of terminal vinylidene groupings of greater than 80 mol % and an average molecular weight of 500 to 10,000 Dalton by cationic polymerization of isobutene or of isobutene and monomers copolymerizable with isobutene in the presence of solvent-stabilized transition metal complexes with weakly coordinated anions.