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:
Jan. 06, 2004
Filed:
Oct. 05, 2001
Applicant:
Inventors:
Colin J. Schaverien, Amsterdam, NL;
René Ernst, Hoorn, NL;
Jan-Dirk van Loon, Almere, NL;
Tiziano Dall'Occo, Ferrara, IT;
Assignee:
Basell Technology Company B.V., Hoofddorp, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 4/42 ; C07F 1/700 ; B01J 3/100 ;
U.S. Cl.
CPC ...
C08F 4/42 ; C07F 1/700 ; B01J 3/100 ;
Abstract
Zirconocene compounds with two indenyl ligands linked in the 2 position by means of a two-carbon-atoms divalent bridging group can be suitably used as components of catalysts for the polymerization of olefins. Particularly it is possible to prepare, with high yields, ethylene (co)polymers having low molecular weights and narrow molecular weight distributions, without the need of using considerable amounts of molecular weight regulators, such as hydrogen.