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:
May. 05, 2015
Filed:
Oct. 04, 2013
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Arno Lange, Bad Duerkheim, DE;
Matthias Kiefer, Ludwigshafen, DE;
Matthias Kleiner, Mannheim, DE;
Szilard Csihony, Gorxheimertal, DE;
Dietmar Posselt, Heidelberg, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C08G 77/04 (2006.01); C08G 73/06 (2006.01); C08G 65/34 (2006.01); C08G 59/00 (2006.01); C08G 75/32 (2006.01); C08G 67/02 (2006.01); C07C 31/18 (2006.01); C08F 10/10 (2006.01);
U.S. Cl.
CPC ...
C08F 10/10 (2013.01);
Abstract
Preparation of bifunctional polyisobutenes in which isobutene or an isobutene-containing monomer mixture is polymerized in the presence of a Lewis acid and a compound of the formula I in which X is an acyl radical or the radical of an organic or inorganic acid group, Rto Rare identical or different and are hydrogen or a hydrocarbon radical.