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:
Apr. 29, 1997
Filed:
Jun. 06, 1995
Applicant:
Inventors:
David D Devore, Midland, MI (US);
Francis J Timmers, Midland, MI (US);
James C Stevens, Richmond, TX (US);
Robert D Mussell, Midland, MI (US);
Lenore H Crawford, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; C07F / ; C07F / ;
U.S. Cl.
CPC ...
502152 ; 556-7 ; 556-8 ; 526126 ; 526127 ; 526160 ; 526134 ; 526943 ;
Abstract
Novel catalytic derivatives of titanium or zirconium complexes containing one and only one cyclic delocalized, anionic, .PI.-bonded group wherein the metal is in the +2 formal oxidation state and having a bridged ligand structure and an activating cocatalyst are useful as catalysts for polymerizing olefins, diolefins and/or acetylenically unsaturated monomers.