Eastman Chemical Company

Westlake Longview Corporation

Glenn Edward Moore

Kenneth Alan Dooley

Don Kent Farrer

Larry Allen Noble

Randal Ray Ford

Jeffrey James Vanderbilt

Roxanna Lea Whitfield

Sandra Dorothy Holyfield

Tommy Ray Maddox, Ii

Alan George Wonders

Jeremy Bruce Mann

Brad Thedford Duckworth

Jesus Jose Garcia

Jeffrey Daniel Daily

Tommy Ray Ii Maddox

A method for preventing or reducing clogging of a fines ejector in a gas-phase olefin polymerization process is disclosed. The process involves injecting a liquid into the motive gas stream entering the fines ejector.

Method for preventing or reducing clogging of a fines ejector

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 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

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 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 metallocene catalyst and dinitrogen monoxide in amounts sufficient to reduce the electrostatic charge in the polymerization medium. Also provided is a process for reducing electrostatic charge in the production of polyolefins by introducing dinitrogen monoxide into the polymerization medium.

Process for producing polyolefins

Disclosed is a process for producing polyolefins wherein the solids are conveyed by a gas throughout the polymerization process, thereby resulting in improved operability.

Olefin polymerization process

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 and dinitrogen monoxide in an amount sufficient to reduce the electrostatic charge in the polymerization medium. Also provided is a process for reducing electrostatic charge in the polymerization of an olefin by adding dinitrogen monoxide.

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 an olefin polymerization catalyst and dinitrogen monoxide in an amount sufficient to reduce the electrostatic charge in the polymerization medium. Also provided is a process for reducing electrostatic charge in the polymerization of an olefin by adding dinitrogen monoxide.

Disclosed is a method for controlling or reducing the amount of powder fines present in a polyethylene fluidized bed reactor. The method uses hydrocarbons that are inert with respect to the polymerization reaction, as well as using reactive olefins. The reduction of powder fines provides significant operating benefits in the fluid bed process, including reduced formation of powder agglomerates in the reactor and reduced fouling of equipment in the recycle gas stream.

Growing community of inventors

Longview, TX, United States of America

Glenn Edward Moore