Dow Global Technolgoies LLC

Other

The Dow Chemical Company

Pbbpolisur S.r.l.

Dow Quimica De Colombia S.a.

Bp Chemicals Limited

H.b. Fuller Licensing & Financing Inc.

Dow Glo

Pbbpoiisur S.r.l.

Dow Brasil S.a.

H R D Corporation

Dupont Dow Elastomers Inc.

Solvay Engineered Polymers, Inc.

Dow Brazil S.a.

Teresa Plumley Karjala

Mehmet Demirors

Aziz Hassan

Otto J Berbee

Selim Yalvac

Lori L Kardos

Cornelis F J Den Doelder

Stefan Hinrichs

Sarat Munjal

Sean W Ewart

Jian Jim Wang

Christopher R Eddy

John O Osby

Rajen M Patel

James C Stevens

Gregory G Borsinger

Wallace W Yau

Cynthia L Rickey

Jose Ortega

Lonnie G Hazlitt

Yunwa Wilson Cheung

Thoi H Ho

Benjamin R Rozenblat

Lawrence J Effler, Jr

Nilesh R Savargaonkar

Brian W Walther

Charles F Diehl

Jorge Caminero Gomes

James L Cooper

Karl Zuercher

William J Harris

Stephen F Hahn

Nicolas Cardoso Mazzola

David T Gillespie

Rongjuan Cong

Selim Bensason

Brian W Kolthammer

Mustafa Bilgen

Pankaj Gupta

John D Weaver

Pak-Meng Cham

Michael J Mullins

H Craig Silvis

Clark H Cummins

Brad Maurice Moncla

Sylvie Y Desjardins

Cristina Serrat

Wendy D Hoenig

Hayley A Brown

Jong Young Lee

Bharat Indu Chaudhary

Linfeng Chen

Michael K Laughner

Daniel D VanderLende

Deepak R Parikh

Satchit Srinivasan

Kurt Frederick Hirsekorn

Xiao Bing Yun

Barry Alan Morris

Jianping Pan

Che-I Kao

Brian W S Kolthammer

Thomas W Karjala

Maximiliano Zanetti

Zhe Zhou

Sarah M Hayne

Edward Szczepaniak

David R Wilson

Brad A Cobler

Kalyan Sehanobish

Martin J Guest

Yijian Lin

Robert K Rosen

I-Hwa Lee

David C Kelley

Theresa J Hermel-Davidock

Seema V Karande

Mark S Kroll

Richard J Keaton

Patricia Ansems

Li-Min Tau

Lee Spencer

Peter Remmers

Robert A Dubois

Jacquelyn A Degroot

Harald Werenicz

Michael Joseph Zogg, Jr

John A Naumovitz

Ian M Munro

Thomas Wittkopf

Douglas S Ginger

Vivek Kalihari

Mark G Katsaros

Fabricio Arteaga Larios

Michael B Biscoglio

Philip Howard

Angela N Taha

Marc A Springs

Maria Pollard

Carmelo Declet Perez

Embodiments of the present disclosure are specifically related to LLDPE compositions produced from heterogeneous procatalyst compositions and blown and cast films incorporating these LLDPE compositions.

Ziegler-Natta catalyzed polyethylene resins and films incorporating same

The polymer blend includes at least 90% by weight low density polyethylene (LDPE) polymer and from 1% to 10% by weight acid copolymer based on the total weight of the polymer blend. In the polymer blend, the LDPE polymer has a melt index (I? 2 #191) from 2 g/10 min to 8 g/10 min as determined in accordance with ASTM D1238, and a molecular weight distribution from 5 to 10.5. In the polymer blend, the acid copolymer is a polymerized reaction product of: at least 60% by weight ethylene, based on the total weight of the monomers present in the ethylene acid copolymer; from 1% to 20% by weight monocarboxylic acid monomer, based on the total weight of the monomers present in the ethylene acid copolymer; and from 0 to 20% by weight alkyl acrylate monomer, based on the total weight of the monomers present in the ethylene acid copolymer.

Low density polyethylene with enhanced adhesion-to-aluminum foil by blending-in acid copolymer resins

Polymer blends, films, and coated substrates that include the polymer blends. The polymer blends include at least 90% by weight low density polyethylene polymer and from 1 to 10% by weight ionomer. The LDPE polymer has a melt index (I)from 2 g/10 mins to 6 g/10 mins, and a molecular weight distribution from 5 to 11 as determined by a conventional gel permeation chromatography method. The ionomer includes an ethylene acid copolymer, in which from 15% to 70% of acid groups are neutralized by sodium cation based on the total number of acid groups in the acid copolymer. The ethylene acid copolymer is the polymerized reaction product of: at least 50% by wt. ethylene, from 2 wt. % to 40 wt. % of monocarboxylic acid monomer, and from 0 to 20 wt. % of alkyl acrylate, based on the total wt. % of the monomers present in the ethylene acid copolymer.

Low density polyethylene with enhanced hot tack strength and adhesion-to-metal by the addition of ionomers

Embodiments of the present invention relate to multilayer films and articles. In one aspect, a multilayer film comprises at least one outer layer comprising at least 50 wt % of a polyethylene composition comprising the reaction product of ethylene and optionally, one or more alpha-olefin comonomers, wherein the polyethylene composition is characterized by the following properties: a. a melt index, I, of from 0.3 to 3.0 g/10 min; b. a density of from 0.950 to 0.965 g/cm; c. a melt flow ratio, I/I, of from 6.3 to 7.5; and d. a molecular weight distribution (MWD) of from 2.2 to 3.5, wherein the multilayer film has a thickness of at least 2 mils, wherein the multilayer film comprises at least 50% by weight polyethylene, wherein the multilayer film exhibits a surface haze of 13.5% or less when measured according to ASTM 1003-07, and wherein the multilayer film exhibit a water vapor transmission rate of 0.7 g/mil/100 in/day or less when measured according to ASTM F1249-06 at a temperature of 38° C. and a relative humidity of 100%.

Multilayer films and articles comprising multilayer films

Embodiments disclosed herein include multilayer films having a cling layer, a core layer, and a release layer, wherein the cling layer comprises a propylene interpolymer and the core layer comprises a core layer polyethylene composition.

Multilayer stretch films and methods thereof

A composition comprising an ethylene/CO interpolymer, formed from a high pressure, free-radical polymerization, and wherein the ethylene/CO interpolymer has the following properties: a) a CO content from 'greater than 0' weight percent to less than, or equal to, 10 weight percent CO (carbon monoxide), based on the weight of the interpolymer; and b) a melting point, Tm, in &#xb0; C. that meets the following relationship: Tm (&#xb0; C.)&#x2264;601.4*(Density in g/cc)&#x2212;452.5(&#xb0; C.).

Ethylene/CO interpolymers and processes to make the same

The heterogeneous procatalyst of this disclosure includes a titanium species; a hydrocarbon soluble transition metal compound having a structure M(OR); a chlorinating agent having a structure A(Cl)(R), and a magnesium chloride component. M of M(OR)is a non-reducing transition metal other than titanium, the non-reducing transition metal being in an oxidation state of +2 or +3. Each Ris independently (C-C)hydrocarbyl or &#x2014;C(O)R, where Ris (C-C)hydrocarbyl. Subscript z of M(OR)is 2 or 3. Each Rand Rmay be optionally substituted with one or more than one halogen atoms, or one or more than one &#x2014;Si(R), where each Ris (C-C)hydrocarbyl. A of A(Cl)(R)is aluminum or boron; Ris (C-C)hydrocarbyl; and x is 1, 2, or 3; and a magnesium chloride component.

Ziegler-Natta catalysts for the production of polyethylene

Embodiments disclosed herein include multilayer cast films having a cling layer and a release layer, wherein the cling layer comprises (i) a first polyethylene composition, and (ii) ultra-low density polyethylene, very low density polyethylene, ethylene/alpha-olefin elastomer, propylene-based elastomer, or combinations thereof; and the release layer comprises a second polyethylene composition.

Multilayer cast films and methods of making thereof

Disclosed herein is a film comprising a layer that comprises a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers, wherein said polyethylene composition is characterized by the following properties: a melt index, I, measured according to ASTM D1238 (2.16 kg, 190 C), of from 0.5 to 10 g/10 min; a density (measured according to ASTM D792) of less than 0.935 g/cm; a melt flow ratio, I/I, wherein Iis measured according to ASTM D1238 (10 kg, 190 C) of from 6.0 to 7.5; a molecular weight distribution (Mw/Mn) of from 2.8 to 3.9; and a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms, and a low density polyethylene.

Films having desirable mechanical properties and articles made therefrom

The present invention discloses a process for forming a biaxially oriented film. The process includes first selecting a polyolefin resin wherein said polyolefin resin comprises a linear low density polyethylene resin characterized by having from 9 to 35 weight percent of the total weight of linear low density polyethylene resin eluting from a CEF at a temperature greater than 97.0&#xb0; C.; and further characterized by having a CDR of from 33 to 80 and a Mw Ratio of from 0.15 to 0.45. Next a film is formed from the polyolefin resin selected in the first step. Finally the film formed in the second step is oriented in a sequential manner. The films produced by this process are characterized by having an ultimate elongation at least 1.5 times greater in the MD as compared to the CD and the 2% secant modulus is a least 1.25 times greater in the CD as compared to the MD. The films are further characterized by having free residual shrinkage of less than 10% in the MD and less than 10% in the CD when exposed to a temperature of 90&#xb0; C. for 10 minutes.

Bioriented polyethylene film

Provided is a method for increasing the melt strength and/or low shear viscosity of a polyethylene resin. The method includes: a) providing a polyethylene composition including the reaction product of ethylene and optionally, one or more alpha-olefin comonomers, wherein the polyethylene composition is characterized by the following properties: a density ranging from 0.900 g/cmto 0.970 g/cm, a molecular weight distribution (Mw/Mn) ranging from 2.6 to 3.5, and from 0.10 to 0.27 vinyl groups per 1,000 total carbon atoms; b) providing a masterbatch composition including a free radical generator and a polyethylene resin, wherein the free radical generator has a half-life at 220&#xb0; C. of less than 200 seconds, and a decomposition energy higher than &#x2212;250 kJ/mol, and wherein the polyethylene resin has a density ranging from 0.900 g/cmto 0.970 g/cm, melt index ranging from 0.01 g/10 min to 100 g/10 min; and c) reacting the polyethylene composition with the masterbatch composition to form a modified polyethylene composition.

Modified polyethylene compositions and method for making the same

A high pressure, free radical polymerization process to form an ethylene-based polymer, the process comprising at least the following step: polymerizing a reaction mixture comprising ethylene, using a polymerization system comprising the following: (A) a reactor configuration comprising at least one reactor that comprises at least two reaction zones, a first reaction zone (reaction zone 1) and an ith reaction zone (where i&#x2265;2); wherein the ith reaction zone is the last reaction zone, and wherein i is the total number of reaction zones; (B) at least two ethylene-based feed streams, a first ethylene-based feed stream and an nth ethylene-based feed stream, wherein the first ethylene-based feed stream is sent to the first reaction zone, and the nth ethylene-based feed stream is the last ethylene based feed stream sent to the reactor configuration; wherein n&#x2264;i; and RZn/RZ1 does not equal 1.0, where RZ1=mole fraction of make-up ethylene in the first ethylene-based feed stream to the first reaction zone; where RZn=mole fraction of make-up ethylene in the last ethylene-based feed stream sent to the reactor configuration; (C) a control system to control the percentage of the make-up ethylene in the first ethylene-based feed stream, and the percentage of the make-up ethylene in the nth ethylene-based feed stream; and wherein at least one reaction zone receives a CTA make-up feed stream comprising an alpha-olefin, and wherein the alpha-olefin has a chain transfer activity constant (Cs) value &#x2264;0.10, and wherein the chain transfer activity constant (Cs) is measured at 1360 atm, 130&#xb0; C.

Ethylene-based polymers with new distributions of terminal and internal unsaturations

Embodiments disclosed herein include multilayer films having a cling layer and a release layer, wherein the cling layer comprises (i) an ethylene/alpha-olefin elastomer, and (ii) a polyethylene polymer selected from ultra-low density polyethylene, a very low density polyethylene, or combinations thereof, and the release layer comprises a low density polyethylene (LDPE) having a density of from 0.915 to 0.930 g/cc, a melt index, I, of from 1.0 to 30.0 g/10 min, and a molecular weight distribution, (Mw/Mn), as measured by the conventional calibration of triple detector gel permeation chromatography, of from 3.0 to less than 7.0.

Multilayer films and methods thereof

A composition comprising an ethylene-based polymer which comprises the following properties: a) MWD(conv) from 3.0 to 7.0; b) an ADF IR between 0.230 and 0.260 for molecular weight &#x2264;15,000 g/mol c) 12 from 4.0 to 6.5 g/10 min.

Ethylene-based polymers with good processability for use in multilayer films

The invention provides a composition comprising a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and comprising the following properties:

Low density ethylene-based polymers with high melt strength

Growing community of inventors

Lake Jackson, TX, United States of America

Teresa Plumley Karjala