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. 26, 2011
Filed:
May. 11, 2005
Mirjam Herrlich-loos, Mannheim, DE;
Christian Drohmann, Brasschaat, BE;
Darijo Mijolovic, Mannheim, DE;
Thomas Wettling, Limburgerhof, DE;
Helmut Mach, Heidelberg, DE;
Mirjam Herrlich-Loos, Mannheim, DE;
Christian Drohmann, Brasschaat, BE;
Darijo Mijolovic, Mannheim, DE;
Thomas Wettling, Limburgerhof, DE;
Helmut Mach, Heidelberg, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The invention relates to a method for producing mainly ethylenically unsaturated isobutene polymers, wherein the sum of proportions of molecules with a double bond in an α position and molecules with a double bond in a position β is increased to 75% mol by polymerising isobutene in a liquid phase in the presence of a diluted or dispersed catalyst complex which comprises (i) an electron donor and (ii) a compound of general formula (I) HMe[MF], wherein Me is a metal with oxidation state m, M is an element selected from elements of the groups 2, 3, 4, 5, 10, 11, 13, 14 or 15 of the periodic table according to the IUPAC notation of an element oxidation number n, a is an integer ≧1, b is an integer ≧0, x is an integer ≧2 and c is [(a+mb)/(x−n)]. The catalyst is preferably embodied in the form of HBFO(CH). The inventive method makes it possible to obtain an isobutene polymer having a low fluorine-content even using technical Chydrocarbon portions as an isobutene source.