Eastman Chemical Company

Westlake Longview Corporation

Kenneth Alan Dooley

Jeffrey James Vanderbilt

Randal Ray Ford

Alan George Wonders

Glenn Edward Moore

Don Kent Farrer

Larry Allen Noble

William A Ames

Roxanna Lea Whitfield

Wayne Scott Strasser

Paul Keith Scherrer

Sandra Dorothy Holyfield

Matthew Howard Scott

Robert Lin

Thomas James Devon

Bailey James Salmon

Dwayne Ray Leonard

David Lynn Meade

Mark Dewayne Lorenz

Tommy Ray Maddox, Ii

Jose Pedro Martinez

Corey Emonn Shaw

Guy Glen Luneau

Justin Dean Hearron

Brad Thedford Duckworth

Mark Dwayne Lorenz

Jesus Jose Garcia

Jeffrey Daniel Daily

Tommy Ray Ii Maddox

William Albert Ames

There are disclosed polymerization processes and associated apparatuses. The polymerization processes involve both making a polymeric material in a fluidized bed reactor having a feed distributor and catching a spitwad with a spitwad catcher, and the apparatuses are those corresponding to such processes.

Polymerization process and associated apparatus

A process and apparatus for gas phase polymerization of olefins in a fluidized bed reactor are disclosed. The process and apparatus employ a vertically oriented fines ejector in order to reduce fouling and reactor downtime.

Process and apparatus for olefin polymerization in a fluidized bed reactor

A gas distribution plate for fluidized-bed, olefin polymerization reactors is provided. In addition to holes for distributing a fluidizing gas, the plate comprises a plurality of hollow projections for introducing a fluid into the fluidized-bed reactor. The hollow projections, which can be tubes or pipes, extend above the plate towards the fluidized bed and serve a number of purposes. The projections can break apart or penetrate fallen polymer agglomerates or sheets. They can be equipped with flow or pressure sensors to detect a decrease in flow rate or an increase in pressure drop across the projections, which is an indicator of the presence and/or size of fallen polymer agglomerates or sheets. The projections can also break apart the agglomerates or sheets into smaller pieces by delivering blasts of fluid directly into the agglomerates or sheets. The projections can also be used to inject a kill agent into the fallen agglomerates or sheets, or collapsed portions of the bed, to speed up penetration of the kill agent into the agglomerates, sheets, or collapsed portions.

Gas distribution plate for fluidized-bed olefin polymerization reactors

A high-pressure separator with improved efficiency is provided. The separator comprises a centrifugal separator located inside of a gravity separator. The centrifugal separator has an enclosed upper portion and desirably comprises a single cylinder. The high-pressure separator is particularly suitable for use in the production of low-density polyethylene under high pressure.

High-pressure separator

A method for polymerizing olefins in a fluidized-bed reactor is provided. The method involves introducing a fluid into the fluidized-bed reactor at an angle and amount sufficient to induce one or more swirls in the fluidized bed in the reactor.

Swirling fluidized-bed reactors for olefin polymerization

A method for preventing or inhibiting fouling in a gas-phase polyolefin polymerization process. The method includes maintaining the inside surface temperature of the process equipment below the dew point temperature of the gas mixture passing through the equipment.

Method for preventing or inhibiting fouling in a gas-phase polyolefin polymerization process

A novel continuous gas phase polymerization process for producing polyethylene and interpolymers of ethylene and at least one other olefin is provided wherein a non-aromatic halogenated hydrocarbon(s) is used in a specified amount such that the activity of the titanium, zirconium and/or hafnium containing Ziegler-Natta catalyst is increased.

Process for the polymerization of ethylene and interpolymers thereof

There is disclosed a process for reducing residual free radical polymerizable monomer content of a polymer comprising contacting the polymer, in molten form, with a free radical initiator, such as di-tert-amylperoxide.

Process for reducing residual free radical polymerizable monomer content of polymers

A novel continuous gas phase polymerization process for producing polyethylene and interpolymers of ethylene and at least one other olefin is provided wherein a non-aromatic halogenated hydrocarbon is used in a specified amount such that the activity of the titanium, zirconium and/or hafnium containing Ziegler-Natta catalyst is increased.

A novel continuous gas phase polymerization process for producing polyethylene and interpolymers of ethylene and at least one other olefin is provided wherein a saturated halogenated hydrocarbon is used in a specified amount such that the activity of the titanium containing Ziegler-Natta catalyst is increased.

A novel continuous gas phase polymerization process for producing polyethylene and interpolymers of ethylene and at least one other olefin is provided wherein chloroform is used in a specified amount such that the activity of the titanium containing Ziegler-Natta catalyst is increased.

A novel process for producing homopolymers and copolymers of ethylene which involves contacting ethylene and/or ethylene and at least one or more other olefin(s) under polymerization conditions with a Ziegler-Natta type catalyst, at least one halogenated hydrocarbon, at least one compound of the formula X ER as a co-catalyst and at least one compound containing at least one carbon-oxygen-carbon linkage (C&mdash;O&mdash;C) of the formula R &mdash;O(&mdash;R &mdash;O) &mdash;R as an external electron donor. Also provided are films and articles produced therefrom.

Process for producing polyethylene

A novel process for producing homopolymers and interpolymers of olefins which involves contacting an olefin and/or an olefin and at least one or more other olefin(s) under polymerization conditions with a Ziegler-Natta catalyst comprising at least one transition metal compound and at least one organometallic co-catalyst compound and tetrahydrofuran in amounts sufficient to reduce the electrostatic charge in the polymerization medium. Also disclosed is a process for reducing electrostatic charge in an olefin polymerization medium.

Growing community of inventors

Longview, TX, United States of America

Kenneth Alan Dooley