Dow Global Technolgoies LLC

The Dow Chemical Company

Equipolymers Gmbh

Dow Brasil Sudeste Industrial Ltda

Sarat Munjal

Christopher R Eddy

Sean W Ewart

Mehmet Demirors

Teresa Plumley Karjala

Otto J Berbee

John O Osby

Wallace W Yau

Arkady L Krasovskiy

Lonnie G Hazlitt

Stefan Hinrichs

Bharat Indu Chaudhary

Pak-Meng Cham

Ivan A Konstantinov

Kalyan Sehanobish

Hayley A Brown

Jose Ortega

Rajesh P Paradkar

Jian Jim Wang

Burkhard Eric Wagner

Yijian Lin

Manish Talreja

Che-I Kao

Joshua B Gaubert

Clark J Cummings

Patrick J C Schouterden

Alfred E Vigil, Jr

Robert J Jorgensen

Brian W Kolthammer

Saurav S Sengupta

Richard J Keaton

Manish K Mundra

Alec Y Wang

Michael D Turner

Michael Joseph Zogg, Jr

Kefu Sun

Cornelis J F Hosman

Johnathan E DeLorbe

Joaquin Flores

Jeffery S Bradley

Henk Hagen

Ruddy A J Nicasy

Johnathan E Delorbe

Werner Zschoch

Cornelis J Hosman

Volkmar Voerckel

Jens-Peter Wiegner

Alexandra E Frankel

Bruce Michael Hasch

Kevin Paul Rogers

Andrew F Hall

Thomas M Wardlow

Che I Kao

Daniel W Baugh, Iii

Yifan Y Dong

Sergio E Goncalves

Bryan Gutermuth

Rolf Eckert

Jimmy D Allen

Ruddy Nicasy

Jian Wang

Marion Sela

Robert J Jorgesen

Michael G Ormand

Gunter Feix

Michael E Bishop

Luiz Rodriguez

Bharat Chaudhary

John Osby

Christopher Eddy

Hayley Brown

Wallace Yau

Otto Berbee

Alfred Vigil

The present disclosure provides a composition. In an embodiment, the composition is an ethylene-based polymer composition formed by high pressure (greater or equal to 100 MPa) free radical polymerization. The composition includes ethylene monomer and a mixture of hydrocarbon-based molecules. Each hydrocarbon-based molecule includes three or more internal alkene groups.

Ethylene-based polymer composition with branching and process for producing the same

The present disclosure provides a process. In an embodiment, the process includes introducing an antifoulant into an ethylene feed of a reactor system. The reactor system includes the ethylene feed, a hyper-compressor, a preheater and a polymerization reactor. The ethylene feed is located upstream of the hyper-compressor. The antifoulant consists of an inhibitor, molecular oxygen, and optionally a solvent. As the ethylene feed is located upstream of the hyper-compressor, the process includes introducing the antifoulant into the ethylene feed upstream of the hyper-compressor. The process further includes adding a free radical initiator to the polymerization reactor. The process further includes polymerizing the ethylene in the polymerization reactor under high pressure free-radical polymerization conditions, and forming an ethylene-based polymer.

Antifoulant and process

The present disclosure provides an ethylene-based polymer composition formed by high pressure (greater or equal to 100 MPa) free radical polymerization. The ethylene-based polymer composition includes ethylene monomer and a mixture of hydrocarbon-based molecules, each hydrocarbon-based molecule comprising three or more terminal alkene groups. The ethylene-based polymer has a melt index (MI) from 0.1 to 1.0 g/10 min.

The present disclosure provides a composition. In an embodiment, the composition is an ethylene-based polymer composition formed by high pressure (greater or equal to 100 MPa) free radical polymerization. The ethylene-based polymer composition includes ethylene monomer and a mixture of hydroxyl-terminated polybutadiene molecules (PB-OH). Each PB-OH molecule includes internal alkene groups and terminal alkene groups. Each PB-OH molecule has more internal alkene groups than terminal alkene groups.

The present disclosure provides an ethylene-based polymer. The ethylene-based polymer is formed from reacting, under polymerization conditions, ethylene monomer and bisallyl maleate ('BAIIM'). The present ethylene-based polymer with ethylene monomer and bisallyl maleate branching agent is interchangeably referred to as “BAIIM-PE.”

Ethylene-based polymer composition with branching

A copolymer of ethylene and hydrolysable silane includes from 0.1 wt % to 5.0 wt % hydrolysable silane groups and has a Mz(abs)/Mw(abs) of less than or equal to 9.5; a ratio of Mz(abs)/Mw(abs) to polydispersity of less than or equal to 1.5; a polydispersity of 6.6 or greater; a Density×Polydispersity of 6.0 or greater; or an Amorphous Content at Room Temperature×Polydispersity of 360 or greater. Methods for forming a moisture-crosslinkable polymer composition include forming a copolymer of ethylene and hydrolysable silane at a polymerization temperature of greater than or equal to 180° C. to less than or equal to 400° C. at a pressure from 5,000 psi to 50,000 psi; and adding a silanol condensation catalyst to the copolymer of ethylene and hydrolysable silane.

Moisture crosslinkable copolymers of ethylene and hydrolysable silane

A moisture-curable polyethylene formulation comprising a (hydrolyzable silyl group)-functional polyethylene copolymer and a condensation cure catalyst. The formulation is designed to be rapidly moisture curable under ambient conditions. Also methods of making and using same; cured polymer products made therefrom; and articles containing or made from same.

Rapidly moisture-curable polyethylene formulation

An insulated wire or cable is made by a process comprising the steps of:

Process for making crosslinked cable insulation using high melt strength ethylene-based polymer made in a tubular reactor and optionally modified with a branching agent

Embodiments of a method for producing a multimodal ethylene-based polymer having a first, second, and third ethylene-based component, wherein the multimodal ethylene based polymer results when ethylene monomer, at least one C-Ccomonomer, solvent, and optionally hydrogen pass through a first solution, and subsequently, a second solution polymerization reactor. The first solution polymerization reactor or the second solution polymerization reactor receives both a first catalyst and a second catalyst, and a third catalyst passes through either the first or second solution polymerization reactors where the first and second catalysts are not already present. Each ethylene-based component is a polymerized reaction product of ethylene monomer and C-Ccomonomer catalyzed by one of the three catalysts.

Dual reactor solution process for the production of multimodal ethylene-based polymer

Embodiments of methods for producing a trimodal polymer in a solution polymerization process comprise three solution polymerization reactors organized in parallel or in series.

Multimodal ethylene-based polymer processing systems and methods

A process to prepare an ethylene-based polymer, said process comprising polymerizing a mixture comprising ethylene, at a pressure greater than, or equal to, 100 MPa, in the presence of at least one free-radical initiator; and in a reactor system comprising at least one reactor and at least one Hyper-compressor, and wherein at least one oil formulation, optionally comprising one or more lubrication agents, is added to the Hyper-compressor; and wherein at least one of the following steps takes place: A) thermally treating the one or more lubrication agents, in an oxygen-free atmosphere, to achieve a peroxide level &#x2264;10 ppm, based on the weight of the lubrication agent(s), and then adding said agent(s) to the oil formulation, prior to adding the oil formulation to the Hyper-compressor; or B) thermally treating the oil formulation, in an oxygen-free atmosphere, to achieve a peroxide level &#x2264;10 ppm, based on the weight of the oil formulation, prior to adding the oil formulation to the Hyper-compressor; C) a combination of A and B.

Lubricant treatments for free-radical polymerizations

An insulated wire or cable is made by a process comprising the steps of: (A) extruding onto a covered or uncovered metal conductor or optical fiber a composition having a DF measured at 130&#xb0; C. (60 Hz, 2 kV) or 120&#xb0; C. (60 Hz, 8 kV) or 100&#xb0; C. (60 Hz, 8 kV) of &#x3c;0.5% and comprising: (1) a high melt strength ethylene-based polymer made in a tubular reactor, and (2) a peroxide, and (B) crosslinking the high melt strength ethylene-based polymer.

A composition comprising an ethylene-based polymer is made by a process comprising the steps of: (A) contacting under first polymerization conditions at least ethylene and at least one molecular catalyst to form a first ethylene-based polymer, and (B) contacting under second polymerization conditions the first ethylene-based polymer of (A) with at least additional ethylene and a carbon-carbon free radical initiator of Structure (I): wherein R, R, R, R, Rand Rare each, independently, hydrogen or a hydrocarbyl group and wherein, optionally, two or more R groups (R, R, R, R, Rand R) form a ring structure, with the proviso that at least one of Rand R, and at least one of Rand Ris a hydrocarbyl group of at least two carbon atoms, to form the composition.

Process for making ethylene-based polymers using carbon-carbon free radical initiators

A process to form an ethylene-based polymer, said process comprising at least the following: polymerizing a mixture comprising ethylene, in the presence of at least one free-radical initiator, and in a reactor configuration comprising at least three reaction zones and at least two ethylene feed streams; and wherein the inlet pressure of the first reaction zone is less than, or equal to, 3200 Bar; and wherein the amount of ethylene, and optionally one or more comonomers, and optionally one or more CTAs, fed to the first reaction zone is from 40 mole % to 80 mole %, based on the total moles of ethylene, and optionally one or more comonomers, and optionally one or more CTAs, fed to the polymerization; and wherein the average polymerization temperature of the first 40 wt % polymer formed (APT) (based on the total amount of polymer formed) is less than, or equal to, 200&#xb0; C.

High pressure, free radical polymerizations to produce ethylene-based polymers

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Lake Jackson, TX, United States of America

Sarat Munjal