Univation Technologies, LLC

Dow Technology Investments LLC

Dow Global Technologies LLC

John Francis Szul

Simon Mawson

Roger L Kuhlman

Timothy R Lynn

David H McConville

Matthew Gary McKee

Mark Gregory Goode

David James Schreck

James McLeod Farley

Kersten Anne Erickson

Sun-Chueh Kao

Tae Hoon Kwalk

Kersten Anne Terry

Frederick John Karol

Donald R Loveday

Nitin Borse

Swapnil B Chandak

Timothy Todd Wenzel

Robert J Jorgensen

Ayush A Bafna

John Henry Oskam

Robert Harold Vogel

Tae Hoon Kwack

Rainer Kolb

Kent Newman

Bruce Jon Savatsky

Cliff Robert Mure

Harvey E Andresen

Yi Zhang

Floyd L Pfeffer

Phillip R Fairchild

Kent E Newman

Laughlin G McCullough

Clark Curtis Williams

Ryan Winston Impelman

Ian M Munro

Chuan C He

Paul T Daniell

Bethany M Neilson

Donna Jean Crowther

Ching-Tai Lue

Robert Olds Hagerty

Michael E Muhle

C Jeff Harlan

Wesley R Mariott

Timothy Marlow Boller

Rex Eugene Murray

George Alan Vaughan

R Eric Pequeno

Angela I Padilla-Acevedo

James H McCain, Jr

Mark P Ossowski

Mahsa McDougal

Joel D Wieliczko

Gregory T Whiteker

Agapios Kyriacos Agapiou

Pradeep Jain

Chi-I Kuo

Richard B Pannell

Eric John Markel

Brian Terry Keen

F David Hussein

Phuong Anh Cao

Hwaili Soo

Haiqing Peng

Andrew J Young

Peter S Martin

Bo Liu

Brandon C Locklear

Daniel P Zilker

C Dale Lester

Daudi A Abe

Laurence G Britton

Daniel N Thomas, Jr

Eric Lucas

Bernie Osborne

Charles D Lester

Fred A Conneway

James Herndon McCain

Daniel N Thomas

Elbert J Campbell

James H Mccain

David A Spears

Dick A Nagaki

Joseph C Noronha

Clyde L Rhodes, Ii

E J Markel

Bernie B Osborne

Mahsa Mcdougal

Clyde L Rhodes

Timothy M Boller

Embodiments provide bimodal polymerization catalyst systems comprising metallocene olefin polymerization catalysts and biphenylphenol polymerization catalysts made from biphenylphenol polymerization precatalysts of Formula I.

Bimodal catalyst systems

Provided are bimodal linear low density polyethylene copolymers (B-LLDPE copolymers) that have a combination of improved properties comprising at least one processability characteristic similar or better than that of an unblended monomodal ZN-LLDPE and a dart impact property similar or better than that of an unblended monomodal MCN-LLDPE. For the various aspects, the B-LLDPE copolymer has a density from 0.8900 to 0.9300 g/cm; a melt index (I) from 0.1 g/10 min. to 5 g/10 min.; a Mfrom 600,000 to 1,200,000 g/mol; and a hexane extractables content present in a value of up to 2.6 wt. % as measured according to ASTM D-5227:95. The B-LLDPE copolymer can be further characterized by a first melt flow ratio (I/I) from 25 to 65 and a first molecular weight ratio (M/M) from 3.5 to 5.5.

Bimodal linear low density polyethylene copolymer

A nucleating agent-free and LLDPE-free polyolefin composition for making films with enhanced barrier properties against water vapor and oxygen gas. Related aspects include formulations, manufactured articles, films, and methods.

Bimodal polyethylene homopolymer composition

A bimodal ethylene-co-1-hexene copolymer composition consisting of a higher molecular weight component and a lower molecular weight component and, when in melted form at 190 degrees Celsius, is characterized by a melt property performance defined by a combination of melt index (5 kg), melt strength, and, optionally, shear thinning properties, and, when in solid form, is characterized by a slow crack growth property performance defined by a combination of strain hardening modulus and accelerated full-notch creep test performance. A pipe consisting of the bimodal ethylene-co-1-hexene copolymer composition. A method of synthesizing the bimodal ethylene-co-1-hexene copolymer composition. A method of making the pipe. A manufactured article, which is not a pipe, comprising the bimodal ethylene-co-1-hexene copolymer composition.

Bimodal polyethylene copolymer composition and pipe made thereof

A method of polymerizing an olefin monomer to make a polyolefin composition comprising a polyolefin polymer, the method comprising contacting a solution of an alkane-soluble non-metallocene precatalyst dissolved in an alkane solvent with an activator so as to make a trim catalyst comprising an alkane-soluble non-metallocene catalyst, feeding the trim catalyst, as a solution in an alkane solvent or supported on a support material as a dry powder or a slurry thereof in an alkane solvent, into a polymerization reactor, and polymerizing the olefin monomer with the trim catalyst in the polymerization reactor, thereby making the polyolefin composition.

Method of olefin polymerization using alkane-soluble non-metallocene precatalyst

A bimodal ethylene-co-1-hexene copolymer consisting essentially of a higher molecular weight component and a lower molecular weight component and, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by a combination of high-load melt index, melt flow ratio, and melt elasticity properties. A blown film consisting essentially of the bimodal ethylene-co-1-hexene copolymer. A method of synthesizing the bimodal ethylene-co-1-hexene copolymer. A method of making the blown film. A manufactured article comprising the bimodal ethylene-co-1-hexene copolymer.

Bimodal polyethylene copolymer and film thereof

A compound of formula (1) as drawn in the description, wherein M is a Group 4 metal, one R is a silicon-containing organic solubilizing group, and the other R is a silicon-containing organic solubilizing group or a silicon-free organic solubilizing group. A method of synthesizing the compound (1). A solution of compound (1) in alkane solvent. A catalyst system comprising or made from compound (1) and an activator. A method of polymerizing an olefin monomer with the catalyst system.

Alkane-soluble non-metallocene precatalysts

A compound of formula (1) as drawn herein, wherein M is a Group 4 metal and each R independently is a silicon-free organic solubilizing group. A method of synthesizing the compound (1). A solution of compound (1) in alkane solvent. A catalyst system comprising or made from compound (1) and an activator. A method of polymerizing an olefin monomer with the catalyst system.

A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.

Polyethylene composition

A bimodal polyethylene composition, products made therefrom, methods of making and using same, and articles, including bottle caps and closures, containing same.

Multimodal polyethylene composition

Embodiments of the present disclosure are directed towards catalyst formulations including a metallocene and a stearic compound selected from bis 2-hydroxyethyl stearyl amine, aluminum distearate, and combinations thereof, where the metallocene is represented by the following formula: (Formula (I)) wherein each n-PR is n-propyl, and each X is independently CH, Cl, or F. 

Catalyst formulations

A spray-dried zirconocene catalyst system comprising a zirconocene catalyst and a hydrophobic fumed silica, which supports the zirconocene catalyst. A spray-drying method of making same. Polyolefins; methods of making and using same; and articles containing same.

Spray-dried zirconocene catalyst system

Embodiments of the present disclosure are directed towards methods for controlling a polymerization reaction including determining an instantaneous density model for a gas-phase polymerization, and utilizing the instantaneous density model to monitor the polymerization reaction to determine if a threshold instantaneous density is reached.

Controlling a polymerization reaction

Embodiments of the present disclosure are directed towards methods of adjusting melt index and/or density utilizing a metallocene complex represented by Formula (I): wherein each n-Pr is n-propyl, and each X is independently CH, CI, Br, or F.

Methods for adjusting a polymer property

A method including a) polymerizing at least one monomer in a gas phase reactor in the presence of a supported multimodal catalyst system to form a multimodal polyethylene product having a reactor split equal to respective weight fractions of resin components in the polyethylene product; b) applying a predetermined formula for a product parameter of the multimodal polyethylene product; c) obtaining incorporation data and production rate data from the reaction based upon the predetermined formula; d) determining an actual hydrogen leading indicator; e) comparing the actual hydrogen leading indicator to a target value for a hydrogen leading indicator to determine a deviation of the actual hydrogen leading indicator from the target value; and f) adjusting an amount of a catalyst precursor being fed to the gas phase reactor to control reactor split and a product parameter.

Controlling reactor split and a product parameter

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Hurricane, WV, United States of America

John Francis Szul