Exxonmobil Chemical Patents Inc.

Patrick J Palafox

John Robert Hagadorn

Matthew William Holtcamp

Jo Ann M Canich

Ramyaa Mathialagan

Peijun Jiang

Alexander Z Voskoboynikov

Jian Yang

Gregory S Day

Dmitry Vadimovich Uborsky

Georgy Pavlovich Goryunov

Xin Chen

Mikhail I Sharikov

Yaohua Gao

Liehpao O Farng

Ian C Stewart

Liehpao Oscar Farng

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

Quinolinyldiamido transition metal complexes are disclosed for use in alkene polymerization to produce multimodal polyolefins.

Quinolinyldiamido transition metal complexes, production and 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 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.

Aluminum alkyls with pendant olefins on clays

New pyridylamide transition metal complex compositions for olefin polymerizations are described herein featuring a 7-membered chelate ring and a cyclometalated hydrocarbyl group. When activated using typical activators these compositions form active alkene polymerization catalysts. Theses novel catalyst compositions are shown herein to be active for olefin polymerization, especially for preparation of polymers containing ethylene.

Transition metal complexes of tridentate dianionic CNN ligands, production and use thereof

Pyridyldiamido transition metal complexes are disclosed for use in alkene polymerization to produce high melting point polyolefins.

Pyridyldiamido transition metal complexes, production and use thereof

Processes to produce ethylene copolymers using pyridyldiamido transition metal complexes, a chain transfer agent, and an activator are disclosed.

Process to produce polymers from pyridyldiamido transition metal complexes and use thereof

A process of producing ethylene &#x3b1;-olefin copolymers, especially ethylene block copolymers, comprising contacting ethylene and a Cto C&#x3b1;-olefin with a transition metal pyridyldiamide (MPN3) catalyst component and an activator, as well as from 10 equivalents to 1000 equivalents relative to the catalyst component of chain transfer agent; isolating an ethylene-&#x3b1;-olefin copolymer having a Tof less than 140&#xb0; C., a MWD of less than 2.5, and a weight average molecular weight (Mw) within the range of from 5 kDa to 500 kDa. The chain transfer agent can be selected from Group 2, 12 or Group 13 alkyl or aryl compounds.

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Hattiesburg, MS, United States of America

Patrick J Palafox