Exxonmobil Chemical Patents Inc.

Ramyaa Mathialagan

Matthew William Holtcamp

John Robert Hagadorn

Jo Ann M Canich

Patrick J Palafox

Gregory S Day

Dongming Li

Timothy Marlow Boller

Kevin A Stevens

This invention relates to a supported catalyst system comprising: (i) at least one first catalyst component comprising a group 4 bis(phenolate) complex; (ii) at least one second catalyst component comprising a 2,6-bis(imino)pyridyl iron complex; (iii) activator; and (iv) support. The catalyst system may be used for preparing polyolefins, such a bimodal polyethylene, typically in a gas phase polymerization.

Supported catalyst systems and processes for use thereof

This invention relates to organoaluminum compounds, organoaluminum activator systems, preferably supported, to polymerization catalyst systems containing these activator systems and to polymerization processes utilizing the same. In particular, this invention relates to catalyst systems comprising a support, an organoaluminum compound and a metallocene.

Aluminum alkyls with pendant olefins for polyolefin reactions

Catalyst systems with single site transition metal complexes (such as pyridyldiamido transition metal complexes), an activator, and a metal hydrocarbenyl chain transfer agent (preferably an aluminum vinyl-transfer agent) are disclosed for use in alkene polymerization.

Polymers produced via use of vinyl transfer agents

This invention relates to organoaluminum compounds, organoaluminum activator systems, preferably supported, to polymerization catalyst systems containing these activator systems, and to polymerization processes utilizing the same. In particular, this invention relates to catalyst systems comprising ion-exchange layered silicate, a catalyst compound, an activator and an aluminum compound represented by formula: Al(R')(R&#x2033;), wherein each R&#x2032;, independently, is a C-Chydrocarbyl group; each R&#x2033;, independently, is a C-Chydrocarbenyl group; and v is from 0.1 to 3.

Growing community of inventors

Baytown, TX, United States of America

Ramyaa Mathialagan