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:
Oct. 16, 2007
Filed:
Feb. 11, 2004
R. Resendes, Sarnia, CA;
Gabor Kaszas, London, CA;
Mark J. Drewitt, Sarnia, CA;
Stephan Glander, Leverkusen, DE;
Gerhard Langstein, Kurten, DE;
Martin Bohnenpoll, Leverkusen, DE;
R. Resendes, Sarnia, CA;
Gabor Kaszas, London, CA;
Mark J. Drewitt, Sarnia, CA;
Stephan Glander, Leverkusen, DE;
Gerhard Langstein, Kurten, DE;
Martin Bohnenpoll, Leverkusen, DE;
Lanxess Inc., Sarnia, Ontario, CA;
Abstract
The present invention relates to a continuous process for producing polymers at conversions ranging from 50% to 95% having a Mooney viscosity of at least 25 Mooney-units and a gel content of less than 15 wt. % containing repeating units derived from at least one isoolefin monomer, more than 4.1 mol % of repeating units derived from at least one multiolefin monomer and optionally further copolymerizable monomers in the presence of AlCland a suitable proton source (e.g. water) or cationogen and at least one multiolefin cross-linking agent wherein the process is conducted in the absence of transition metal compounds and organic nitro compounds.