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. 14, 2001
Filed:
Oct. 22, 1996
Applicant:
Inventors:
Roberto Fusco, Novara, IT;
Luca Longo, Novara, IT;
Antonio Proto, Novara, IT;
Diego Vigliarolo, Rho, IT;
Gianfranco Guglielmetti, Bogogno, IT;
Liliana Gila, Cameriano, IT;
Assignee:
Enichem S.p.A., Milan, IT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 3/122 ; C08F 4/603 ;
U.S. Cl.
CPC ...
B01J 3/122 ; C08F 4/603 ;
Abstract
A catalytic system with an increased activity for the (co)polymerization of alpha-olefins comprises a catalyst of the metallocene type, which is capable of polymerizing olefins without aluminoxane, and a weak coordinating compound, which, when used in a polymerization process, enables a higher productivity than an analogous process carried out with the metallocene type catalyst per se.