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. 17, 2012
Filed:
Jul. 22, 2009
Sandor Nagy, Naperville, IL (US);
Linda N. Winslow, Cincinnati, OH (US);
Shahram Mihan, Bad Soden, DE;
Reynald Chevalier, Frankfurt, DE;
Lenka Lukesova, Frankfurt, DE;
Ilya E. Nifant'ev, Moscow, RU;
Pavel V. Ivchenko, Moscow, RU;
Sandor Nagy, Naperville, IL (US);
Linda N. Winslow, Cincinnati, OH (US);
Shahram Mihan, Bad Soden, DE;
Reynald Chevalier, Frankfurt, DE;
Lenka Lukesova, Frankfurt, DE;
Ilya E. Nifant'ev, Moscow, RU;
Pavel V. Ivchenko, Moscow, RU;
Equistar Chemicals, LP, Houston, TX (US);
Abstract
Catalysts useful for polymerizing olefins are disclosed. The catalysts comprise an activator and a Group 4 metal complex that incorporates a dianionic, tridentate 2-(2-aryloxy)quinoline or 2-(2-aryloxy)dihydroquinoline ligand. In one aspect, supported catalysts are prepared by first combining a boron compound having Lewis acidity with excess alumoxane to produce an activator mixture, followed by combining the activator mixture with a support and the tridentate, dianionic Group 4 metal complex. The catalysts are easy to synthesize, support, and activate, and they enable facile production of high-molecular-weight polyolefins.