Exxonmobil Chemical Patents Inc.

Mobil Oil Corporation

Univation Technologies, LLC

Exxonmobil Oil Corporation

Exxonmobil Research and Engineering Company

Mobil Corporation

Pradeep P Shirodkar

Peijun Jiang

Thomas E Nowlin

Sandra Denise Schregenberger

Robert I Mink

Grace O Tsien

Aspy Keki Mehta

Sunny Jacob

Robert Olds Hagerty

Armenag Hagop Dekmezian

Fred David Ehrman

Jianya Cheng

Porter Clarke Shannon

Randall B Laird

Michael A Risch

Weiqing Weng

Mark Bradley Davis

Yury V Kissin

Andy Haishung Tsou

Larry Lee Iaccino

Palanisamy Arjunan

Zerong Lin

Frederick Y Lo

Donna Jean Crowther

Gary Michael Diamond

Dongming Li

John Richard Shutt

Charles Stanley Speed

Chi-I Kuo

Andrew G Narvaez, Jr

Gabor Kiss

David John Lohse

Laughlin G McCullough

Johannes Matthieu Soulages

Robert Lynn Santana

Kenneth George Schurzky

Keith Wesley Trapp

Vaseem Firdaus

Chia Shian Chee

Ronald S Shinomoto

Shih-May Christine Ong

Pamela Jean Wright

Steven Kent Ackerman

Peter William Manders

Chunming Wang

S Christine Ong

Daniel P Zilker

Rakesh Kumar

Hitesh A Fruitwala

Arturo Leyva

Rahul Ravindra Kulkarni

David Bruce Barry

Daniel Gerard O'Neil

G McCullough Laughlin

Michael E Muhle

Daniel Paul Zilker, Jr

Yong Yang

Shuji Luo

Kevin Richard Squire

Kevin Bruce Stavens

Michael F McDonald, Jr

Arnold Lustiger

Michael A Kinnan

Alistair Duncan Westwood

Thomas T Sun

Steven A Best

Nikos Hadjichristidis

Wei Tang

Michael J Krause

Susan P Evans

Ronald Raymond Thackston

Joseph M Tomei

Andrew Takacs

Chia S Chee

Keith Edward Jolibois

Keith Dackson

Vincent Joseph Crotty

Lawrence T Kale

Andrew G Narvaez

John P Bladt

Jill Helaine Paul

David B Barry

Perla N Peszkin

Frederick Yip-Kwai Lo

Michele Lynn Grief-Rust

Robert Phillip Duttweiler

Brian J Egan

Rahul R Kulkarni

Ronald R Thackston

Keith E Jolibois

Steven K Ackerman

Weiquing Weng

Daniel G Oneil

The present invention relates to a branched modifier and a composition comprising more than 25 wt % (based on the weight of the composition) of one or more linear ethylene polymers having a g'of 0.97 or more and an Mw of 20,000 g/mol or more and at least 0.1 wt % of a branched modifier where the modifier has a) a g&#x2032;of 0.70 or less; b) an Mw of 100,000 g/mol or more; c) an Mw/Mn of 4.0 or more; d) a shear thinning ratio of 110 or more, e) a melt strength of 10 cN or more; f) a complex viscosity at 0.1 rad/sec at 190&#xb0; C. of at least 130,000 Pa&#xb7;s; and g) a phase angle of Z&#xb0; or less where Z=138.3G*, where G* is the complex modulus reported in Pascals measured at 190&#xb0; C. and the phase angle units are reported in degrees, wherein the G* is from 1,000 to 1,000,000 Pa.

Modified polyethylene compositions with enhanced melt strength

A crack-resistant article comprising a diene terpolymer, the diene terpolymer comprising (or consisting essentially of) from 0.01 wt % to 10.0 wt % diene derived units, and 1.0 wt % to 20 wt % of Cto C&#x3b1;-olefin derived units based on the weight of the diene terpolymer, wherein the diene terpolymer: a) has a g'of less than 0.90; b) has an Mw within a range of from 100,000 g/mol to 500,000 g/mol; c) has an Mw/Mn within the range of from 3.5 to 12.0; and d) an Mz/Mn of greater than 7.0. Inventive articles comprise a blend of a relatively high density linear polyethylene and the diene terpolymer.

Crack-resistant polyethylene compositions

A foamable or foamed article comprising a diene terpolymer, the diene terpolymer comprising (or consisting essentially of) from 0.01 wt % to 10.0 wt % diene derived units, and 1.0 wt % to 20 wt % of Cto C&#x3b1;-olefin derived units based on the weight of the diene terpolymer, wherein the diene terpolymer: a) has a g'of less than 0.90; b) has an Mw within a range of from 100,000 g/mol to 500,000 g/mol; c) has an Mw/Mn within the range of from 3.5 to 12.0; and d) an Mz/Mn of greater than 7.0. Inventive articles comprise a blend of a relatively high density linear polyethylene and the diene terpolymer.

Foamed polyethylene compositions

A heterogeneous vulcanized polymer blend comprising a continuous phase comprising a thermoplastic polypropylene having a crystallinity of at least 30% and a dispersed phase comprising particles of an elastomeric copolymer dispersed in the continuous phase and having an average particle size of less than 5 micron. The elastomeric copolymer has a crystallinity of less than 20% and is at least partially cross-linked such that no more than about 80 wt % of the elastomeric copolymer is extractable in cyclohexane at 23&#xb0; C.

Vulcanized polymer blends

A heterogeneous in-situ polymer blend comprising a continuous phase comprising a polypropylene having a crystallinity of at least 30% and a melting point temperature Tgreater than 130&#xb0; C., and a heat of fusion &#x394;Hgreater than 65 J/g; and a dispersed phase comprising particles of an elastomeric copolymer dispersed in the continuous phase and having an average particle size of less than 5 micron, the elastomeric copolymer comprising ethylene units and 0.001 to 5 wt % diene by weight of the copolymer, and having a crystallinity of less than 20% and being at least partially cross-linked such that the degree of cross-link is at least 20%.

Heterogeneous in-situ polymer blend

The present invention relates to a branched modifier and a composition comprising more than 25 wt % (based on the weight of the composition) of one or more linear ethylene polymers having a g'of 0.97 or more and an Mof 20,000 g/mol or more and at least 0.1 wt % of a branched modifier where the modifier has a g&#x2032;of less than 0.97, wherein the ethylene polymer has a g&#x2032;of at least 0.01 units higher than the g&#x2032;of the branched modifier.

Modified polyethylene compositions

This invention relates to blends of polyalphaolefins (PAOs) and polyhydrosilane-modified polyolefins, methods to prepare the blends and methods to prepare polyhydrosilane-modified polyolefins.

Branched polyethylenes by hydrosilation grafting to improve processability of polyethylene

The present invention relates to polyethylene compositions comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, in particular, this invention further relates to polyethylene blends comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, wherein the modifier has: 1) a g' value less than 0.75; 2) a Cayley tree topology with a layer number of 2 or more more; and 3) a average Mw between the branch points of 1,500 g/mol or more.

Modified polyethylene film compositions

The present invention relates to a blown film comprising more than 25 wt % (based on the weight of the composition) of one or more linear ethylene polymers having a g'vis of 0.97 or more and an Mw of 20,000 g/mol or more and at least 0.1 wt % of a branched modifier where the modifier has a) a g&#x2032;vis of 0.90 or less; b) an Mw of 100,000 g/mol or more; c) an Mw/Mn of 3.0 or more; d) an Mz/Mn of 7.0 or more; e) optionally, an Mz of 2,000,000 g/mol or less; and f) a shear thinning ratio of 40 or more.

Modified polyethylene compositions for blown film

The present invention relates to a cast film comprising a composition comprising more than 25 wt % (based on the weight of the composition) of one or more linear ethylene polymers having a g'of 0.97 or more and an Mw of 20,000 g/mol or more and at least 0.1 wt % of a branched modifier where the modifier has a) a g&#x2032;of 0.90 or less; b) an Mw of 100,000 g/mol or more; c) an Mw/Mn of 3.0 or more; d) an Mz/Mn of 7.0 or more; e) a shear thinning ratio of 40 or more; and f) an I21 of 20 dg/min or less; where the film has at least a 10% reduction in neck-in as compared to the same composition formed into a film under the same conditions, except that the branched modifier is absent.

Modified polyethylene compositions for cast film

Provided are blends of branched hydrocarbon comb polymers having tailored branching and molecular weight parameters, with substantially linear polymers. Such blends have been found to have improved extensional rheological properties, while maintaining nearly the viscosity of the substantially linear polymers. The blends of the hydrocarbon comb polymers with the substantially linear polymers thus maintain the extrusion processing characteristics of the linear polymer alone, but have improved extensional flow processability, with strain hardening ratios (SHR) greater than 1. The blends are effective in blown film processing. Also disclosed are related methods for improving extensional flow processability using the branched hydrocarbon comb polymers, as well as the branched hydrocarbon comb polymers themselves, including as a property enhancing additive for such substantially linear polymers.

Branched saturated hydrocarbon polymers as extensional rheology modifiers without impacting shear properties

Provided is a dendritic ethylene polymer. The polymer is a dendritic polymer of an ethylene/alpha-olefin-diene copolymer and a vinyl-terminated polyethylene. There is also provided a process for making a dendritic ethylene polymer. The process includes the steps of preparing a dendritic ethylene polymer by reacting ethylene/alpha-olefin-diene copolymer with vinyl-terminated polyethylene in the presence of a radical source. There is also provided a blend and a blown film that include the dendritic ethylene polymer.

Dendritic ethylene polymers and processes for making

A functionalized polyolefin having one or more pyridazine moieties is disclosed herein. A method to produce the functionalized polyolefin is also disclosed. A composition including the functionalized polyolefin is also disclosed.

Functionalized polymers and oligomers

The present invention relates to polyethylene compositions comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, in particular, this invention further relates to polyethylene blends comprising one or more ethylene polymers and one or more dendritic hydrocarbon polymer modifiers, wherein the modifier has: 1) a g'value less than 0.75; 2) at least 0.6 ppm ester groups as determined byH NMR; 3) a Tm of 100&#xb0; C. or more; 4) an Mw of 50,000 g/mol or more, as determined by GPC; 5) an average number of carbon atoms between branch points of 70 or more as determined byH NMR.

Modified polyethylene blown film compositions having excellent bubble stability

Growing community of inventors

Stow, OH, United States of America

Pradeep P Shirodkar