Patent Number: 6,294,626

Title: Olefin polymerization catalysts containing modified boraaryl ligands

Abstract: A single-site olefin polymerization catalyst is described. The catalyst comprises an activator and an organometallic compound that includes a Group 3 to 10 transition or lanthanide metal, M, and a modified boraaryl ligand. We surprisingly found that the catalyst is more active in olefin polymerization compared to other catalysts containing non-modified boraaryl ligands. Most surprisingly, the supported catalyst gives polyolefins with a multimodal molecular weight distribution having separate components of distinct molecular weight.

Inventors: Wang; Shaotian (Mason, OH), Merrick-Mack; Jean A. (West Chester, OH)

Assignee: Equistar Chemicals, LP

International Classification: B01J 31/14 (20060101); B01J 31/16 (20060101); B01J 31/12 (20060101); B01J 31/22 (20060101); C08F 10/00 (20060101); C08F 4/659 (20060101); C08F 110/02 (20060101); C08F 110/00 (20060101); C08F 4/00 (20060101); C08F 004/52 ()

Expiration Date: 09/25/2018