Patent · US Active

Catalysts for olefin polymerization

US10683377B2 · kind B2 · utility

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34Claims

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Inventors

Catherine A. Faler · Houston, US
Margaret T. Whalley · Houston, US
Crisita Carmen H. Atienza · Houston, US
David A. Cano · Houston, US

Key dates

Filing date	Jun 28, 2019
Grant date	Jun 16, 2020
Priority date	—
Expiry date	Jun 28, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2800/20
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present disclosure provides catalyst compounds having a tridentate ethylene bridged amine bis(phenolate) ligand. Catalysts of the present disclosure preferably provide catalyst activity values of 250 gP/mmolCat/hr or greater and polyolefins, such as polyethylene copolymers, having comonomer content of 8.5 wt % or greater, an Mn of 190,000 g/mol or greater, an Mw of 350,000 g/mol or greater, and a narrow Mw/Mn (such as about 2). Catalysts, catalyst systems, and processes of the present disclosure can provide polymers having a high comonomer content (e.g., 8.5 wt % or greater).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.