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:
Aug. 09, 2005
Filed:
Jan. 25, 2002
Francois-xavier Buzin, Paris, FR;
Francois Nief, Anthony, FR;
Francois Mathey, Paris, FR;
Jean Malinge, Saint Genis Laval, FR;
Eliane Deschamps, Palaiseau, FR;
Bernard Deschamps, Palaiseau, FR;
Francois-Xavier Buzin, Paris, FR;
Francois Nief, Anthony, FR;
Francois Mathey, Paris, FR;
Jean Malinge, Saint Genis Laval, FR;
Eliane Deschamps, Palaiseau, FR;
Bernard Deschamps, Palaiseau, FR;
Atofina, Puteaux, FR;
Abstract
The invention relates to novel bridged biphosphole ligands according to the general formula:where R, R, Rare chosen from hydrogen, alkyl, aryl or silyl, Ris chosen from hydrogen, alkyl, aryl or halogen, Rpossibly being replaced with a direct bond between the two phosphorus atoms and T is a divalent group. The invention also relates to metallocenes obtained from these ligands. These metallocenes are useful as catalytic components for the polymerization of olefins.