Exxonmobil Chemical Patents Inc.

Ramot at Tel-aviv University Ltd.

Exxonmobil Research and Engineering Company

Gregory S Day

Matthew William Holtcamp

Xuan Ye

David F Sanders

Garth Ronald Giesbrecht

John Robert Hagadorn

Jian Yang

David A Cano

Lubin Luo

Moshe Kol

Jo Ann M Canich

Matthew S Bedoya

Crisita Carmen H Atienza

Rohan A Hule

Konstantin Press

Laughlin G McCullough

Machteld M W Mertens

Michelle E Titone

Celestino M Perez, Jr

Gerardo J Majano Sanchez

Sarah J Mattler

Xiongdong Lian

Patrick J Palafox

Meagan E Evans

Ramyaa Mathialagan

Eric D Whetmore

Patrick Brant

Donna Jean Crowther

Francis Charles Rix

David Charles Calabro

Quanchang Li

Bruce Alan Harrington

Prasadarao Meka

Patrick C Chen

Carlos R Lopez-Barron

Steven D Brown

Luo Lubin

Lian Xiongdong

Yang Jian

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

This invention relates to a catalyst system including fluorided silica, alkylalumoxane activator and a bridged monocyclopentadienyl group 4 transition metal compound, where the fluorided support has not been calcined at a temperature of 400&#xb0; C. or more, and is preferably, produced using a wet mix method, particularly an aqueous method.

Catalyst composition comprising fluorided support 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 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

This invention relates to a supported catalyst system and process for use thereof. In particular, the catalyst system includes a pyridyldiamido transition metal complex, an activator and a support material. The catalyst system may be used for preparing ultrahigh molecular weight polyolefins.

Supported catalyst systems and processes for use thereof

This invention relates to a catalyst system comprising fluorided silica, alkylalumoxane activator and at least two metallocene catalyst compounds, where the first metallocene is a bridged monocyclopentadienyl group 4 transition metal compound and the second metallocene is a biscyclopentadientyl group 4 transition metal compound, where the fluorided support has not been calcined at a temperature of 400&#xb0; C. or more, and is preferably produced using a west mixing method, such as an aqueous method.

This invention relates to a supported catalyst system and process for use thereof. In particular, the catalyst system includes a pyridyldiamido transition metal complex, a metallocene compound, a support material and, optionally, an activator. The catalyst system may be used for preparing multi-modal polyolefins.

This invention relates to a process to polymerize olefins, particularly to produce ethylene polymers with internal unsaturation structures.

Production of polyolefins with internal unsaturation structures using a metallocene catalyst system

A catalyst system including the reaction product of a fluorided support (such as a fluorided silica support) that preferably has not been calcined at a temperature of 400&#xb0; C. or more, an activator and at least a first transition metal catalyst compound; methods of making such catalyst systems, polymerization processes using such catalyst systems and polymers made therefrom.

Supported catalyst systems and methods of using same

A process for producing alpha-olefin dimers comprises contacting, at a temperature of 80&#xb0; C. or more, a feedstock comprising at least one C(linear) alpha-olefin with a catalyst system comprising activator and one or more catalyst compounds represented by the formula: where M is a Group 4 metal; n is 1, 2, or 3; Ris hydrogen or a Cto Calkyl; each of R, R, R, R, R, R, R, and Ris independently selected from hydrogen and Cto Calkyl; each X is independently selected from the group consisting of hydrocarbyl radicals having from 1 to 20 carbon atoms, hydrides, amides, alkoxides, sulfides, phosphides, halides, and a combination thereof, (two X's may form a part of a fused ring or a ring system), the contacting being conducted under conditions effective to oligomerize at least part of Calpha-olefin to produce an oligomerized product containing at least 30 wt % of the alpha-olefin dimer and at least 80 mol % of vinylidene unsaturation, where the conversion of the alpha olefin is at least 10 wt %, based upon the weight of the alpha olefin monomer entering the reactor and the weight of dimer produced.

Production of olefin dimers

This invention relates to a process to polymerize olefins by contacting one or more olefins with a catalyst system comprising an organoaluminum treated layered silicate support, and a bridged metallocene compound and obtaining a polyolefin having a g'vis of 0.90 or more and an MIR of 30 or less.

Polymerization process using bridged metallocene compounds supported on organoaluminum treated layered silicate supports

A catalyst system comprising a combination of: 1) an activator; 2) one or more metallocene catalyst compounds; 3) a support comprising an organosilica material, which may be a mesoporous organosilica material. The organosilica material may be a polymer of at least one monomer of Formula [ZOZSiCH](I), where Zrepresents a hydrogen atom, a C-Calkyl group, or a bond to a silicon atom of another monomer and Zrepresents a hydroxyl group, a C-Calkoxy group, a C-Calkyl group, or an oxygen atom bonded to a silicon atom of another monomer. This invention further relates to processes to polymerize olefins comprising contacting one or more olefins with the above catalyst system.

Olefin polymerization catalyst system comprising mesoporous organosilica support

This invention relates to high porosity (&#x2265;15%) and/or low pore diameter (PD&#x3c;165 &#x3bc;m) propylene polymers and propylene polymerization processes using single site catalyst systems with supports having high surface area (SA&#x2265;400 m/g), low pore volume (PV&#x2264;2 mL/g), a specific mean pore diameter range (PD=1-20 nm), and high average particle size (PS&#x2265;30 &#x3bc;m).

Bimodal propylene polymers and sequential polymerization

This invention relates to heterophasic copolymers of propylene and an alpha olefin comonomer having a high fill phase content (&#x2265;15%), and heterophasic polymerization processes using a single site catalyst system with a support having high average particle size (PS&#x2265;30 &#x3bc;m), high surface area (SA&#x2265;400 m/g), low pore volume (PV&#x2264;2 mL/g), and a mean pore diameter range of 1&#x2264;PD&#x2264;20 nm.

Heterophasic copolymers and sequential polymerization

This invention relates to organoaluminum activators, 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 an ion-exchange layered silicate, an organoaluminum activator, and a metallocene.

Organoaluminum activators on clays

A catalyst system including the reaction product of a fluorided support, an activator, and at least a first transition metal catalyst compound; methods of making such catalyst systems, polymerization processes using such catalyst systems, and polymers made therefrom.

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College Station, TX, United States of America

Gregory S Day