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:
Dec. 06, 2011
Filed:
Oct. 31, 2006
Julien Thuilliez, Clermont-Ferrand, FR;
Christophe Boisson, Tramoyes, FR;
Roger Spitz, Lyons, FR;
Michelin Recherche et Technique S.A., Granges-Paccot, CH;
Total Petrochemicals France, Puteaux, FR;
Centre National de la Recherche Scientifique, Paris, FR;
Ecole Superieure de Chimie-Physique-Electronique de Lyon (CPE), Villeurbanne, FR;
Abstract
A borohydride metallocene complex of a lanthanide, its process of preparation, a catalytic system incorporating it, a process for the copolymerization of olefins employing this catalytic system and an ethylene/butadiene copolymer obtained by this process, the butadiene units of which comprise 1,2-cyclohexane or 1,2- and 1,4-cyclohexane links. This complex corresponds to one or other of the following formulaeand: