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. 29, 2010
Filed:
Oct. 13, 2006
Applicants:
Hans Peter Rath, Gruenstadt, DE;
Helmut Mach, Heidelberg, DE;
Thomas Wettling, Limburgerhof, DE;
Inventors:
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 4/14 (2006.01); C08F 10/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a process for preparing polyisobutene having a mean molecular weight Mof from 400 to 50 000, in particular from 500 to 10 000, by polymerizing isobutene in the presence of a BF-containing complex catalyst, wherein the polymerization is carried out at least temporarily in the presence of one or more cyclic ethers.