Chevron Phillips Chemical Company LP

Phillips Petroleum Company

Other

Chevron Philips Chemical Company, LP

Nguyen, Thanh

Hottovy, John D.

Kufeld, Scott, E.

Benham, Elizabeth a

Gonzales, Rebecca a

Gill, Catherine M.

Bhandarkar, Maruti

Odi, Timothy O.

Mutchler, Joel A.

Scott E Kufeld

Joel A Mutchler

John D Hottovy

Rebecca A Gonzales

Joseph A Curren

Eric J Netemeyer

Jeffrey S Fodor

David H Burns

Catherine M Gill

Elizabeth Ann Benham

Thanh Tri Nguyen

Timothy O Odi

Donald W Verser

Maruti Bhandarkar

John H Tait

Paul J DesLauriers

Jamie N Sutherland

Ralph W Romig

Anurag Gupta

James E Hein

Robert R McElvain

Max P McDaniel

Dale A Zellers

Jeffrey S Lowell

Kenneth A Dooley

Richard Peacock

Carl W Fenderson

Bruce E Kreischer

Ai-Fu Chang

Michael H Treptau

Penny A Zellers, Legal Representative

Thomas A Reid

Rolf L Geerts

Joseph J Bergmeister

John D Stewart

Tara G Hill

Larry W Ezell

Ragavan Vaidyanathan

David S Boone

Robert F Parrott

Thanh T Nguyen

Eric D Schwerdtfeger

Wesley R Qualls

Harvey D Hensley

Robert Bohmer

Robert K Franklin, Iii

Paul J Deslauriers

David J Przelomski

Teddy H Cymbaluk

Ethelwoldo P Perez

Ai-fu Chang

Michael C Carter

Robert K Franklin

Ragayan Vaidyanathan

George O Obath

Garry A Marek

Timothy Roetman

Max P Mcdaniel

Robert R Mcelvain

Teddy Cymbaluk

Donal W Verser

Supported chromium (VI) catalysts containing a solid oxide, 0.05 to 5 wt. % chromium, and 0.2 to 20 wt. % carbon, in which the solid oxide or the catalyst has a particle size span from 0.5 to 1.4, less than 3 wt. % has a particle size greater than 100 μm, and less than 10 wt. % has a particle size less than 10 μm, can be contacted with an olefin monomer in a fluidized bed reactor or other suitable polymerization reactor to produce an olefin polymer. Representative ethylene-based polymers produced using the chromium catalysts have a HLMI of 4 to 70 g/10 min, a density from 0.93 to 0.96 g/cm, from 150 to 680 ppm solid oxide (such as silica), from 0.5 to 3 ppm chromium, and a film gel count of less than 15 catalyst particle gels per ftof 25 micron thick film and/or a gel count of less than or equal to 50 catalyst particles of greater than 100 μm (in diameter) per five grams of the ethylene polymer.

Particle size control of silyl chromate catalysts and uses thereof in fluidized bed reactors

Apparatuses and processes that produce multimodal polyolefins, and in particular, polyethylene resins, are disclosed herein. This is accomplished by using two reactors in series, where one of the reactors is a multi-zone circulating reactor that can circulate polyolefin particles through two polymerization zones optionally having two different flow regimes so that the final multimodal polyolefin has improved product properties and improved product homogeneity.

Multiple reactor and multiple zone polyolefin polymerization

Polymerization processes and reactor systems for producing multimodal ethylene polymers are disclosed in which at least one loop reactor and at least one fluidized bed reactor are utilized. Configurations include a loop reactor in series with a fluidized bed reactor and two loop reactors in series with a fluidized bed reactor.

Ethylene polymerization processes and reactor systems for the production of multimodal polymers using combinations of a loop reactor and a fluidized bed reactor

Disclosed are a process and system for preparing a catalyst slurry. The process can include preparing a catalyst slurry comprising a solid particulate catalyst and a carrier liquid in a catalyst slurry preparation system. The catalyst slurry preparation system can include a mixing vessel, a rotatable impeller system connected to the mixing vessel, and a motor connected to the rotatable impeller system. The rotatable impeller system can include an agitator shaft and a hub connected to the agitator shaft. The hub and at least a portion of the agitator shaft are positioned within the mixing vessel along a longitudinal axis of the mixing vessel, and the hub has at least three blades.

Catalyst slurry mixing process and system

Reactor systems, reactor coolant systems, and associated processes for polymerizing polyolefins are described. The reactor systems generally include a reactor pipe and a coolant system, in which the coolant system includes a jacket pipe surrounding at least a portion of the reactor pipe to form an annulus therebetween, at least one spacer coupling the jacket to the reactor pipe, and a coolant which flows through the annulus to remove heat from the reactor pipe. At least one of the external surface of the reactor pipe, the internal surface of the jacket, and at least one spacer, are independently modified, for example by polishing, coating, or reshaping, to reduce the fluid resistance of the coolant flow through the annulus.

Reactor jacket design

Polymerization processes for producing ethylene-based plastomers and elastomers having densities less than 0.91 g/cmutilize a metallocene-based catalyst system containing a chemically-treated solid oxide. These polymerization processes can be conducted in a slurry reactor, a solution reactor, and/or a gas phase reactor. Ethylene polymers produced from the polymerization process can be characterized by a density of less than 0.91 g/cm, a CY-a parameter of less than 0.2, and a ratio of HLMI/MI of at least 30, or a density less than 0.91 g/cm, a CY-a parameter from 0.25 to 0.75, and a ratio of Mw/Mn from 2 to 3.

Metallocene catalyst systems with chemically-treated solid oxides for producing ethylene-based plastomers and elastomers

Growing community of inventors

Houston, TX, United States of America

Scott E Kufeld