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. 10, 1999
Filed:
Feb. 19, 1997
Applicant:
Inventors:
Roberto Santi, Novara, IT;
Giampiero Borsotti, Novara, IT;
Cecilia Querci, Siena, IT;
Liliana Gila, Novara, IT;
Antonio Proto, Novara, IT;
Assignee:
Enichem S.p.A., Milan, IT;
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C07F / ;
U.S. Cl.
CPC ...
526160 ; 526126 ; 526127 ; 526129 ; 526130 ; 526133 ; 526134 ; 526154 ; 526156 ; 526170 ; 526352 ; 526904 ; 526943 ; 556 11 ; 556 13 ; 556 15 ; 556 20 ; 556 28 ; 556 52 ; 556 53 ; 502103 ; 502117 ; 502120 ; 502152 ; 502153 ; 502154 ; 502155 ;
Abstract
Metallocene complexes of a metal M selected from titanium, zirconium and hafnium, comprising at least one anionic group A containing an .eta..sup.5 -cyclopentadienyl ring co-ordinated with the metal M, wherein the anionic group is substituted in at least one position of the cyclopentadienyl ring with a radical having the formula: