Catalysts based on 2-(2-aryloxy)quinoline or 2-(2-aryloxy)dihydroquinoline ligands

US8158733B2 · kind B2 · utility

Assignee

• Equistar Chemicals, LP · US

Inventors

• Sandor Nagy · Naperville, US
• Linda N. Winslow · Cincinnati, US
• Shahram Mihan · Bad Soden, DE
• Reynald Chevalier · Paris, FR
• Lenka Lukesova · Hofheim, DE
• Ilya Nifant'ev · Moscow, RU
• Pavel V. Ivchenko · Moscow, RU

Key dates

• Filing date: Jul 22, 2009
• Grant date: Apr 17, 2012
• Expiry date: Oct 14, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F210/16
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

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.