Chevron Phillips Chemical Company LP

Phillips Petroleum Company

Chevron Philips Chemical Company, LP

O'connor, James E.

Beaulieu, William B.

William B Beaulieu

Qing R Yang

Errun Ding

Max P McDaniel

Albert P Masino

Rex E Murray

Gary L Glass

Alan L Solenberger

Steve J Secora

Tony R Crain

Ted H Cymbaluk

Paul J DesLauriers

Kumudini Jayaratne

Joel L Martin

Mark L Hlavinka

Elizabeth Ann Benham

Kathy S Clear

Brooke L Small

Bruce E Kreischer

Eduardo J Baralt

Richard M Buck

Eric J Netemeyer

Steven J Secora

Kenneth D Hope

James E O'Connor

Max P Mcdaniel

Youlu Yu

Kathy S Collins

David C Rohlfing

William H Beever

William R Coutant

Al R Wolfe

Paul J Deslauriers

Larry M Selby

Pamela L Maeger

Jeffrey W Dancer

Virgil H Rhodes, Jr

David F Register

James E O'connor

Qing Yang

Kumudini C Jayaratne

A method comprising introducing a polymerization feed comprising an &#x3b1;-olefin, a diluent, and a diene to a polymerization system, under polymerization conditions, whereby a polymer product is produced, wherein the diene is present at a level in the range of from about 1 ppm to about 1000 ppm based on the diluent.

Bimodal PE resins with improved melt strength

Methods for controlling the productivity of an olefin polymer in a polymerization reactor system using a halogenated hydrocarbon compound are disclosed. The productivity of the polymer can be increased via the addition of the halogenated hydrocarbon compound.

Methods for increasing polymer production rates with halogenated hydrocarbon compounds

Methods for making alpha olefin oligomers and polyalphaolefins include a step of contacting a Cto Calpha olefin monomer and a catalyst system containing a metallocene, a first activator comprising a solid oxide chemically-treated with an electron withdrawing anion, and a second activator comprising an organoaluminum compound. The alpha olefin oligomers and polyalphaolefins prepared with these catalyst systems can have a high viscosity index combined with a low pour point, making them particularly useful in lubricant compositions and as viscosity modifiers.

Oligomerization of alpha olefins using metallocene-SSA catalyst systems and use of the resultant polyalphaolefins to prepare lubricant blends

A polymer reactor-blend comprising at least a first component having a polydispersity index of greater than about 20 and is present in an amount of from about 1 wt. % to about 99 wt. % based on the total weight of the polymer and a second component having a polydispersity index of less than about 20 and is present in an amount of from about 1 wt. % to about 99 wt. % based on the total weight of the polymer wherein a molecular weight distribution of the second component lies within a molecular weight distribution of the first component.

Polymer compositions and methods of making and using same

This disclosure provides for alpha olefin oligomers and polyalphaolefins (or PAOs) and methods of making the alpha olefin oligomers and PAOs. This disclosure encompasses metallocene-based alpha olefin oligomerization catalyst systems, including those that include at least one metallocene and an activator comprising a solid oxide chemically-treated with an electron withdrawing anion. The alpha olefin oligomers and PAOs prepared with these catalyst systems can have a high viscosity index combined with a low pour point, making them particularly useful in lubricant compositions and as viscosity modifiers.

The present invention provides dual catalyst systems and polymerization processes employing these dual catalyst systems. The disclosed polymerization processes can produce olefin polymers at higher production rates, and these olefin polymers may have a higher molecular weight and/or a lower melt index.

Dual metallocene catalyst systems for decreasing melt index and increasing polymer production rates

The present invention provides a polymerization process utilizing a dual ansa-metallocene catalyst system. Polymers produced from the polymerization process are also provided, and these polymers have a reverse comonomer distribution, a non-bimodal molecular weight distribution, a ratio of Mw/Mn from about 3 to about 8, and a ratio of Mz/Mw from about 3 to about 6.

Catalyst compositions for producing high Mz/Mw polyolefins

The present invention provides dual catalyst systems containing a metallocene catalyst and a hydrogen scavenging catalyst, and polymerization processes employing these dual catalyst systems. Due to a reduction in hydrogen levels in the polymerization processes, olefin polymers produced from these polymerization processes may have a higher molecular weight, a lower melt index, and higher levels of unsaturation.

Use of hydrogen scavenging catalysts to control polymer molecular weight and hydrogen levels in a polymerization reactor

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Tulsa, OK, United States of America

William B Beaulieu