Univation Technologies, LLC

Union Carbide Chemicals & Plastics Technology Corporation

Union Carbide Corporation

Union Carbide Chemicals and Plastics Company, Inc.

Union Carbide Chemicals & Technology LLC

David James Schreck

Simon Mawson

Timothy Todd Wenzel

John Francis Szul

Thomas Henry Peterson

Kersten Anne Erickson

Frederick John Karol

Arthur R Doumaux, Jr

Tae Hoon Kwack

Stephen W King

David H McConville

Donald R Loveday

Lloyd M Burgess

Dick Alan Nagaki

Mark Gregory Goode

Clark Curtis Williams

Gregory T Whiteker

Charles A Gibson

Matthew Gary McKee

George A Skoler

David Robert Bryant

John Robert Briggs

Thomas Carl Eisenschmid

Rex Eugene Murray

Kurt Damar Olson

Tae Hoon Kwalk

Diane Lee Packett

John Henry Oskam

Kersten Anne Terry

Ailene Gardner Phillips

Anil Sakharam Guram

Paul T Daniell

Purna Chand Sishta

Richard W Wegman

Richard M Gerkin

Erik Bruce Tjaden

Eric Lucas

Danny E Smith

Elaine Susan Brigham

Ben W Kiff

Eric Bruce Tjaden

Catalyst compositions and methods, useful in polymerization processes, utilizing at least two metal compounds are disclosed. At least one of the metal compounds is a Group 15 containing metal compound and the other metal compound is preferably a bulky ligand metallocene-type catalyst. The invention also discloses a new polyolefin, generally polyethylene, particularly a multimodal polymer and more specifically, a bimodal polymer, and its use in various end-use applications such as film, molding and pipe.

Catalyst composition, method of polymerization, and polymer therefrom

The present invention is directed to a bimodal polyethylene comprising ethylene derived units and units derived from at least one of a Cto Colefin; wherein the polyethylene has a density of from 0.940 to 0.970 g/cm; an I/Iof 80 or more; a residual Group 4 metal content of 2.0 ppm or less: a Mw/Mn of from 20 to 60; and wherein the polyethylene comprises a high molecular weight component and a low molecular weight component, the high molecular weight component present from 40 to 60 weight percent based on the total polyethylene, and wherein the bimodal polyethylene has a weight avenge molecular weight Mw of 180,000 a.m.u. or more.

Bimodal high density polyethlyene

This invention relates to a method to prepare a supported catalyst system comprising preparing a combination comprising 1) a first supported catalyst system comprising a support, an activator and a metal catalyst compound, and 2) a second supported catalyst system comprising a support, an activator and a metal catalyst compound and thereafter spray-drying the combination.

Catalyst preparation method

Process to polymerize olefins

The present invention relates to the use of at least one acid and at least one base and/or at least one reductant and at least one oxidant that when used with a polymerization catalyst in a polymerization process results in the controllable generation of a catalyst inhibitor that renders the polymerization catalyst substantially or completely inactive.

Catalyst modifiers and their use in the polymerization of olefin(s)

This invention relates to a process to polymerize olefin(s) comprising combining a solution, slurry or solid comprising one or more bulky ligand metallocene catalyst compounds, an optional support, and or one or more activator(s) with a solution comprising one or more phenoxide catalyst compounds, and thereafter, introducing one or more olefin(s) and the combination into a polymerization reactor. This invention also relates to a polymer of ethylene wherein the polymer has a density of 0.910 to 0.930 g/cc, a melt index of 0.3 to 2.0 dg/min, and a 15 to 35 &#x3bc;m thick film of the polymer has a 45&#xb0; gloss of 60 or more, a haze of 7% or less, and a dart impact of 600 g or more.

Catalyst composition, method of polymerization and polymer therefrom

Processes for transitioning among polymerization catalyst systems, preferably catalyst systems that are incompatible with each other. In particular, the processes relate to transitioning among olefin polymerization reactions utilizing Ziegler-Natta catalyst systems, metallocene catalyst systems and other MAO-based single site catalyst systems.

Processes for transitioning between Ziegler-Natta and alumoxane-based single-site polymerization catalysts

Catalyst compositions and methods useful in polymerization processes utilizing at least two metal compounds are disclosed. At least one of the metal compounds is a Group 15 containing metal compound and the other metal compound is preferably a bulky ligand metallocene-type catalyst. The invention also discloses a new polyolefin, generally polyethylene, particularly a multimodal polymer and more specifically, a bimodal polymer, and its use in various end-use applications such as film, molding and pipe. The Group 15 containing metal compound is represented in one embodiment by the formulae:

The present invention relates to the use of thermally triggered compounds that when used with a polymerization catalyst in a polymerization process results in the controllable generation of one or more catalyst inhibitors that renders the polymerization catalyst substantially or completely inactive.

The present invention relates to a method of preparing a supported catalyst system, the method including combining 1) a first supported catalyst system comprising a support, an activator and a metal catalyst compound, and 2) a second supported catalyst system comprising a support, an activator and a metal catalyst compound and thereafter spray-drying the combination.

The present invention relates to the use of at least one solid compound that when used with a polymerization catalyst in a polymerization process results in a phase change of the solid compound to a liquid that renders the polymerization catalyst substantially or completely inactive.

Catalyst modifier and its use in the polymerization of olefin(s)

This invention relates to methods to introduce multiple catalysts, activators or catalyst systems into a gas phase reactor.

Solution feed of multiple catalysts

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Cross Lanes, WV, United States of America

David James Schreck