Eastman Chemical Company

Eastman-kodak Company

Westlake Longview Corporation

Huntsman Polypropylene Corporation

Jeffrey James Vanderbilt

Randal Ray Ford

Thomas Allen Puckette

Thomas James Devon

Jerome L Stavinoha

Gerald W Phillips

Kenneth Alan Dooley

Alan George Wonders

Roxanna Lea Whitfield

William A Ames

Jose Pedro Martinez

Glenn Edward Moore

Darryl Stephen Williams

Max F Meyer, Jr

Horst K Seeger

Kathleen Diane Greer

James Edward Rhein

James Douglas Small, Jr

Luis A Pagan

Stephen Wayne Coe

William C Gose

Paul Keith Scherrer

James H Scott

Scott Arnold Hanson

Robert E Holliday

Garrett Clements Luce

Yao-Ching Liu

Matthew Howard Scott

Bradley Scott Westbrook

Gregory O Nelson

Albert C Ruggles

Saubhagya C Mathur

James P Cleveland

Max Statman

Kurt Joseph Jordens

Gregory T Slemons

Timothy J McKeon

LeVoy G Haight

Kimberly R Payne

Charles M Neeley

Guy Glen Luneau

Corey Emonn Shaw

William Albert Ames

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

There are provided multi-layered structures comprising at least one layer that is an ethylene/alpha-olefin copolymer having a density of less than 0.916 g/cc and a melting peak temperature of greater than 118&deg; C. The multi-layered structures comprise at least two layers. Also provided are articles of manufacture produced from the multi-layer structures such as films, containers, pouches, packages, tubing and the like.

Multi-layered polymeric structures including a layer of ethylene copolymer

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

There is disclosed a process for producing films from ethylene-&agr;-olefin interpolymers, which films have, in combination, the properties of improved surface haze, improved stiffness, and improved color. The process involves incorporating from about 0.1 to less than 1% by weight, of a functionalized ethylene homopolymer or functionalized ethylene interpolymer into an ethylene-&agr;-olefin interpolymer-containing composition, and forming a film from the composition.

Process for producing ethylene-&agr;-olefin interpolymer films

Process for preparing ethylene interpolymers and ethylene interpolymers

Process for preparing interpolymers of ethylene and 2,3-dihydrofuran, or a heteroatom substituted olefin monomer and ethylene interpolymers

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

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

There are provided multi-layered structures comprising at least one layer that is an ethylene/alpha-olefin copolymer having a density of less than 0.916 g/cc and a melting peak temperature of greater than 118&deg; C. The multi-layered structures comprise at least three layers. Also provided are articles of manufacture produced from the multi-layered structures such as films, containers, pouches, packages, tubing and the like.

There is described a process utilizing metallocene catalyst for producing ethylene/olefin interpolymers which, for a given melt index and density, have a reduced melting peak temperature (T ). The process involves contacting ethylene and at least one other olefin under polymerization conditions with a metallocene catalyst and at least one modifier comprising at least one element from Group 15 and/or Group 16 in amounts sufficient to reduce the melting peak temperature of the ethylene/olefin interpolymer. Also described herein are novel ethylene/olefin interpolymers resulting from the process.

Process for producing ethylene/olefin interpolymers

There is described a process for producing ethylene/olefin interpolymers which, for a given melt index and density, have a reduced melting peak temperature (T ). The process involves contacting ethylene and at least one other olefin under polymerization conditions with an olefin polymerization catalyst and at least one modifier comprising at least one element from Group 15 and/or Group 16 in amounts sufficient to reduce the melting peak temperature of the ethylene/olefin interpolymer. Also described herein are novel ethylene/olefin interpolymers resulting from the process.

There is described a process utilizing Ziegler-Natta catalysts for producing ethylene/olefin interpolymers which, for a given melt index and density, have a reduced melting peak temperature (T ). The process involves contacting ethylene and at least one other olefin under polymerization conditions with a Ziegler-Natta catalyst and at least one modifier comprising at least one element from Group 15 and/or Group 16 in amounts sufficient to reduce the melting peak temperature of the ethylene/olefin interpolymer. Also described herein are novel ethylene/olefin interpolymers resulting from the 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 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.

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 at least one ether comprising at least one carbon-oxygen-carbon linkage (C&mdash;O&mdash;C) of the formula R,&mdash;O(&mdash;R,&mdash;O),&mdash;R,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

Jeffrey James Vanderbilt