Chevron Phillips Chemical Company LP

Chevron Philips Chemical Company, LP

Albert P Masino

Qing R Yang

Errun Ding

Max P McDaniel

Joel L Martin

Richard M Buck

Youlu Yu

Ted H Cymbaluk

William B Beaulieu

Chung Ching Tso

Christopher E Wittner

Ashish M Sukhadia

Rex E Murray

Guylaine St Jean

Gary L Glass

Alan L Solenberger

Kumudini Jayaratne

Lloyd W Guatney

Steve J Secora

Eric D Schwerdtfeger

Brooke L Small

Bruce E Kreischer

Eduardo J Baralt

Eric J Netemeyer

Kenneth D Hope

John D Stewart

Elizabeth Ann Benham

Tony R Crain

Rebecca A Gonzales

Graham R Lief

Daniel G Hert

Randy S Muninger

Randall S Muninger

Jim B Askew

Max P Mcdaniel

John D Hottovy

Paul J DesLauriers

Matthew G Thorn

Steven J Secora

Gregory G Hendrickson

Elizabeth Mary Lanier

Paul J Deslauriers

George R Rajaendran

Jon D Ratzlaff

Susannah Lane

Richard A Hernandez

Elliott W Johnson

William L Valerioti

Qing Yang

Kumudini C Jayaratne

Guylaine STJEAN

Techniques are provided for catalyst preparation. A system for catalyst preparation may include an agitator disposed inside a polymerization catalyst tank and configured to mix a polymerization catalyst and a solvent to generate a polymerization catalyst solution. The system may also include a heating system coupled to the polymerization catalyst tank and configured to maintain a temperature of the polymerization catalyst solution above a threshold. The system may also include a precontactor configured to receive feed streams comprising an activator and the polymerization catalyst solution from the polymerization catalyst tank to generate a catalyst complex. The system may also include a transfer line configured to transfer the catalyst complex from an outlet of the precontactor to a reactor.

System and method for catalyst preparation

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 composition comprising an ethylene alpha-olefin copolymer, wherein the polymer composition is characterized as having (a) a density in the range of from greater than about 0.910 g/cc to about 0.930 g/cc, as determined according to ASTM D1505; (b) a melt index in the range of from greater than about 0.5 g/10 min to about 3 g/10 min, as determined by ASTM D1238, Condition 190&#xb0; C./2.16 kg; (c) a molecular weight distribution of from about 3.4 to about 12, as determined by gel permeation chromatography (GPC); (d) a weight average molecular weight of from greater than about 85 kg/mol to about 160 kg/mol, as determined by gel permeation chromatography (GPC); and (e) a z-average molecular weight of from greater than about 210 kg/mol to about 500 kg/mol, as determined by gel permeation chromatography (GPC).

Polymer films having improved heat sealing properties

A catalyst composition may include a precontacted mixture of an olefin polymerization catalyst and an agent including an ammonium salt. The catalyst activity of the catalyst composition in the presence of water may be greater than if no ammonium salt were present in the catalyst composition. The ammonium salt may include a tetraalkylammonium salt, and the olefin polymerization catalyst may include a metallocene compound.

System and method for deterring fouling in a polymerization reactor

Disclosed herein are broad molecular weight distribution olefin polymers having densities in the 0.895 to 0.930 g/cmrange, and with improved impact and tear resistance. These polymers can have a ratio of Mw/Mn in the 8 to 35 range, a high load melt index in the 4 to 50 range, less than about 0.008 LCB per 1000 total carbon atoms, and a reverse comonomer distribution.

Low density polyolefin resins and films made therefrom

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.

Methods for controlling properties of an olefin polymer using an alcohol compound are disclosed. The MI and the HLMI of the polymer can be decreased, and the Mw and the Mz of the polymer can be increased, via the addition of the alcohol compound.

Methods of controlling dual catalyst olefin polymerizations with an alcohol compound

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 polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these hybrid metallocene compounds and for using such compounds in catalyst compositions for the polymerization of olefins also are provided.

Half-metallocene compounds and catalyst compositions

The present invention provides polymerization processes utilizing an ansa-metallocene catalyst system for the production of olefin polymers. Polymers produced from the polymerization processes have properties that vary based upon the presence or the absence of hydrogen and/or comonomer in the polymerization process.

Bridged metallocene catalyst systems with switchable hydrogen and comonomer effects

The present invention provides polymerization processes utilizing a catalyst system containing an ansa-metallocene and a second metallocene compound for the production of olefin polymers.

Catalyst systems containing a bridged metallocene

Methods for controlling dual catalyst olefin polymerizations with an alcohol compound

Growing community of inventors

Tulsa, OK, United States of America

Albert P Masino