1
John D Hottovy, Harvey D Hensley, David J Przelomski, Teddy H Cymbaluk, Robert K Franklin III, Ethelwoldo P Perez: High solids slurry polymerization. Phillips Petroleum Company, Polly C Owen, May 29, 2001: US06239235 (294 worldwide citation)

An olefin polymerization process wherein monomer, diluent and catalyst are circulated in a continuous loop reactor and product slurry is recovered by means of a continuous product take off. The continuous product allows operating the reaction at significantly higher solids content in the circulating ...


2
John D Hottovy, Frederick C Lawrence, Barry W Lowe, James S Fangmeier: Apparatus and method for producing ethylene polymer. Phillips Petroleum Company, George E Bogatie, October 15, 1996: US05565175 (275 worldwide citation)

An apparatus and method for producing ethylene polymer are provided which employ a conduit in the form of a closed loop (i.e. loop reactor) for receiving a flow of a monomer which includes ethylene, a polymerization catalyst and a diluent therethrough for the polymerization of the monomer to ethylen ...


3
Fred T Sherk, Janet L Inkrott: Diluent and inert gas recovery from a polymerization process. Phillips Petroleum Company, Edward L Bowman, February 26, 1985: US04501885 (265 worldwide citation)

A polymerization process wherein a slurry of polymer and diluent is passed from the polymerization zone to a flash zone, then polymer solids having residual diluent carried thereon are passed to a purge zone wherein a heated noncombustible gas is used to remove additional amounts of diluent, and the ...


4
Donald O Hanson: Process and apparatus for separating diluents from solid polymers utilizing a two-stage flash and a cyclone separator. Phillips Petroleum Company, Ryan N Cross, November 19, 1996: US05575979 (256 worldwide citation)

An apparatus and method are provided for separating diluents from solid polymers in an effluent extracted from a polymerization reactor. The separation utilizes a two-stage flash involving a first intermediate pressure flash and a second lower pressure flash, with the first intermediate pressure fla ...


5
John D Hottovy, David H Burns, Scott E Kufeld, Timothy Roetman, Ragavan Vaidyanathan: Diluent slip stream to give catalyst wetting agent. Phillips Petroleum Company, Polly C Owen, July 17, 2001: US06262191 (248 worldwide citation)

A process and apparatus for passing a polymerization effluent, comprising solid polymer, unreacted monomer, diluent and minor amounts of contaminants, to a high pressure flash where most of the fluid components are flashed and wherein a slip stream comprising diluent and minor amounts of monomer is ...


6
David H Burns, William E Martin: Method for controlling removal of polymerization reaction effluent. Phillips Petroleum Company, George E Bogatie, October 3, 1995: US05455314 (236 worldwide citation)

In withdrawing a reaction slurry from a polymerization reactor wherein solid particles in the slurry must be maintained in solution to prevent solidification, a redundant effluent line is provided to remove the slurry in the event the primary line becomes plugged. In use the primary and redundant li ...


7
Cecil C Gentry, Henry E Alquist: Method and apparatus for treatment of subsurface formations. Phillips Petroleum Company, French Hughes & Doescher, October 2, 1984: US04474238 (229 worldwide citation)

A method of extracting bitumen from a subsurface tar sand bed wherein a shell of frozen earth is formed around the periphery of at least a portion of the tar sand bed, followed by recovering bitumen from such portion of the tar sand bed within the shell of frozen earth by suitable means such as, for ...


8
Ronald E Brown, Robert J Hogan, Daniel M Coombs, Simon G Kukes: Process for demetallizing and desulfurizing heavy crude oil. Phillips Petroleum Company, Laney Dougherty Hessin & Beavers, December 5, 1989: US04885080 (221 worldwide citation)

A heavy crude oil is fractionated into at least three liquid fractions which include a distillate fraction boiling in the 400.degree. F.-650.degree. F. range and a 650.degree. F.+ boiling range residuum. The distillate cut is hydrodesulfurized and the residuum is hydrodemetallized. The cuts thus hyd ...


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Max P McDaniel, Kathy S Collins, James L Smith, Elizabeth A Benham, Marvin M Johnson, Anthony P Eaton, Michael D Jensen, Joel L Martin, Gil R Hawley: Organometal catalyst compositions. Phillips Petroleum Company, Polly C Owen, May 28, 2002: US06395666 (197 worldwide citation)

This invention provides catalyst composition for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition comprises as organometal compound, as organoaluminum compound, and a fluorided solid oxide compound.