Dow Global Technolgoies LLC

Rohm and Haas Company

Cargill Inc.

Dow Quimica De Colombia S.a.

Dow Technologies Inc.

Sanjib Biswas

Mehmet Demirors

Mridula Babli Kapur

Didem Oner-Deliormanli

Joshua B Gaubert

Nicolas Cardoso Mazzola

Yijian Lin

David T Gillespie

Alexander Williamson

Fabricio Arteaga Larios

Philip P Fontaine

Jill M Martin

Daniel Lawrence Dermody

Harpreet Singh

Andrew T Heitsch

Craig F Gorin

Douglas S Ginger

Vivek Kalihari

Raymond P Roach

Rajen M Patel

Jorge Caminero Gomes

Ronald Wevers

Leonard Edward Bogan, Jr

Karlheinz Hausmann

Jeffrey D Weinhold

Lori L Kardos

Stephanie M Whited

Timothy Charles Frank

Manesh Nadupparambil Sekharan

Muhunthan Sathiosatham

Mark A Silvano

Rahul Sharma

Jose Eduardo Ruiz

Andrew Michael Lemonds

Peter S Martin

John A Naumovitz

Pavan K Valavala

Robert Tengler

Justice Alaboson

Thomas L Tomczak

Akanksha Garg

Yinglong Chen

Sarah M Hoyt

Jacquelyn A Degroot

Robert Scott Moglia

Bryan L McCulloch

Hien Q Do

Peter Hermann Roland Sandkuehler

Patrick H Au-Yeung

Brayden E Glad

Daniel W Baugh, Iii

Aleksandar Stoiljkovic

Eduardo Alvarez

Yi Fan

Jorge Mario Rodriguez Camelo

Jin Wang

Hitendra Singh

Sarah L Hruby

Arnaldo T Lorenzo

Jian Wang

Francis O Olajide, Jr

Shadid Askar

Carol Tsai

Michael J Zogg

David DeCoster

David C Decoster

Russell T Cooper

Elva L Lugo

Lanhe Zhang

Cindy Hoppe

Marlos Guintini De Oliveira

Albert Carbonell

Georgia Natacha Eftalie Bitinis

Bradley Harkrader

Pedro R Vargas, Ii

Leonard E Bogan

Sarah Hoyt

Andrew M Lemonds

Hitendra K Singh

Jr Francis O Olajide

Pavan Kumar Valavala

Dibyaranjan Mekap

Jacquelyn A DeGroot

Daniel W Baugh Iii

Polyethylene compositions are disclosed that may have a density of 0.910 g/cmto 0.924 g/cmand a melt index (I) In of 0.1 g/10 minutes to 0.5 g/10 minutes and include a first polyethylene fraction area in the temperature range from 45° C. to 80° C. of an elution profile via improved comonomer composition distribution (iCCD) analysis method; a second polyethylene fraction area in the temperature range from 80° C. to 95° C. of the elution profile, and a third polyethylene fraction area in the temperature range from 95° C. to 110° C. of the elution profile. The second polyethylene fraction area may include at least 5% of the total area of the elution profile. The third polyethylene fraction area may include at least 25% of the total area of the elution profile. A ratio of the first polyethylene fraction area to the second polyethylene fraction area may be from 6 to 15.

Polyethylene compositions and films including polyethylene compositions

Embodiments of multilayer films are disclosed comprising a first layer comprising polyethylene, a second layer comprising a first medium density polyethylene; a barrier layer; a third layer comprising a second medium density polyethylene; and a fourth layer comprising polyethylene. The second layer may be positioned between the first layer and the barrier layer. The barrier layer may be positioned between the second layer and the third layer.

Multilayer films comprising polyethylene and barrier layers and methods of producing the same

Embodiments of the present disclosure are directed to multilayer films. Embodiments of the multilayer films may include a first layer comprising a polyethylene composition having a density of 0.924 g/cmto 0.936 g/cmand a melt index (I) of 0.25 g/10 minutes to 2.0 g/10 minutes, a second layer comprising a first polyolefin, a third layer comprising a second polyolefin. The first layer may be positioned between the second layer and the third layer. The first polyolefin and the second polyolefin may be the same or different.

Multilayer films having at least three layers and methods of producing the same

The present invention relates to oriented, multilayer polyethylene films. In one aspect, a biaxially oriented, multilayer polyethylene film comprises at least one layer comprising: (1) a polyethylene-based composition that comprises: (a) at least 97% by weight, based on the total weight of the polyethylene-based composition, of a polyethylene composition comprising: (i) from 25 to 37 percent by weight of a first polyethylene fraction having a density in the range of 0.935 to 0.947 g/cmand a melt index (I) of less than 0.1 g/10 minutes; and (ii) from 63 to 75 percent by weight of a second polyethylene fraction; and (b) 20 to 5000 ppm, based on the total weight of the polyethylene-based composition of a nucleating agent, wherein the nucleating agent comprises a calcium salt of 1,2-cyclohexanedicarboxylic acid or sodium 4-[(4-chlorobenzoyl) amino] benzoate; wherein the polyethylene composition has less than 0.10 branches per 1,000 carbon atoms when measured usingC NMR, wherein the density of the polyethylene-based composition is at least 0.965 g/cm, and wherein the melt index (I) of the polyethylene-based composition is 0.5 to 10 g/10 minutes.

Oriented polyethylene films and articles comprising the same

The present invention is directed to polyethylene-based compositions suitable for packaging applications, films, and articles. The polyethylene-based composition according to embodiments disclosed herein includes a polyethylene composition having a first polyethylene fraction and a second polyethylene fraction as well as a calcium salt of 1,2-cyclohexanedicarbodylic acid. The polyethylene-based composition can deliver a balance of properties, including barrier properties, for packaging applications.

Polyethylene-based compositions and films and articles comprising the same

Disclosed is a curly fiber having a fiber centroid and comprising a first region having a first centroid and a second region wherein the first region comprises an ethylene/alpha olefin interpolymer composition in an amount of at least 75 weight percent based on total weight of the first region and wherein the ethylene/alpha olefin interpolymer composition is characterized by a low temperature peak and a high temperature peak on an elution profile via improved comonomer composition distribution (ICCD) procedure, and a full width at half maximum of the high temperature peak is less than 6.0° C. and the second region is a material comprising a polymer which is different from the ethylene/alpha-olefin interpolymer of the first region and wherein the regions are arranged such that at least one of the first centroid and the second centroid is not the same as the fiber centroid.

Crimped multi-component fibers

A nonwoven fabric comprises at least one fiber having a first component prepared from at least 75 wt. % of bimodalethylene/alpha-olefin interpolymer composition, wherein the ethylene/alpha-olefin interpolymer composition is characterized by: a density in the range of 0.930 to 0.965 g/cm, a melt index (I2) in the range of from 10 to 60 g/10 minutes, wherein the I2 is measured according to ASTM D1238, 190 C, 2.16 kg, a molecular weight distribution, expressed as the ratio of the weight average molecular weight to number average molecular weight (M/M) as determined by GPC of from 1.5 to 2.6, a tan delta at 1 radian/second of at least 45, a low temperature peak and a high temperature peak on an elution profile via improved comonomer composition distribution (ICCD) procedure, and a full width at half maximum of the high temperature peak is less than 6.0° C.

Non-woven fabric having ethylene/alpha-olefin polymer fibers

A process comprising forming fibers having at least a first region and a second region wherein the first region comprises an ethylene/alpha olefin interpolymer composition characterized by: density in the range of 0.930 to 0.965 g/cm; melt index (I2) in the range of from 10 to 60 g/10 minutes; molecular weight distribution in the range of from 1.5 to 2.6; tan delta at 1 radian/second of at least 45; a low temperature peak and a high temperature peak on an elution profile via improved comonomer composition distribution (ICCD) procedure; and full width at half maximum of the high temperature peak is less than 6.0° C. and stretching the fibers to an elongation of at least 20% thereby increasing curl of the fiber. The process may further include forming a non-woven from the fibers and the stretching of the fibers may occur before or after forming of the non-woven.

Method of manufacture of curly fibers

The present disclosure provides for a heat-shrinkable, biaxially stretched, multilayer thermoplastic film that includes at least a puncture resistant layer. The puncture resistant layer is formed with a polyethylene based plastomer having a density of 0.890 g/cmto 0.910 g/cmas measured in accordance with ASTM D-792, and a melt index (MI) as measured by ASTM D-1238 at 190° C./2.16 kg from 0.20 g/10 minutes to 1.5 g/10 minutes. The polyethylene based plastomer has a logMof an upper 25% of a GPC quadrant having a value of 5.1 to 5.7, an intermediate molecular weight distribution (Mw/Mn) of 2.5 to 3, a Mz/Mw value of 2 to 2.5, a Comonomer Distribution Constant value from 60 to 400 and a single SCBD peak between 40-85° C. with a mass fraction of less than 3% above 85° C. as determined by CEF, and a ZSVR value from 1.0 to 5.5. The multilayer thermoplastic film is biaxially stretched at a temperature of 60° C. to 120° C. with a blow-up ratio from 2:1 to 10:1.

Multilayer thermoplastic film with improved puncture resistance performance

Embodiments of the present disclosure are directed to multilayer films. Embodiments of the multilayer films may include a first layer comprising a first polyolefin, a second layer comprising a second polyolefin, a third layer comprising a third polyolefin, fourth layer comprising a fourth polyolefin, and a fifth layer comprising a fifth polyolefin. The second layer may be positioned between the first layer and the third layer; the third layer may be positioned between the second layer and the fourth layer; and the fourth layer may be positioned between the third layer and the fifth layer. Two or more of the first polyolefin, second polyolefin, third polyolefin, and fourth polyolefin may be the same or different. The third polyolefin may be a polyethylene composition having a density of 0.924 g/cmto 0.936 g/cmand a melt index (I) of 0.25 g/10 minutes to 2.0 g/10 minutes.

Multilayer films that include at least five layers and methods of producing the same

The present disclosure provides a process including providing a polyolefin aqueous dispersion having (50) to (90) wt % solids content of dispersion, the polyolefin aqueous dispersion containing solid particles containing a polyolefin including an ethylene-based polymer having a melting temperature from greater than (115)&#xb0; C. to (140)&#xb0; C., polyolefin wax, acrylic dispersant; and an aqueous phase including excess acrylic dispersant; adding diluting water to form a diluted polyolefin aqueous dispersion having (5) to less than (50) wt % solids content; collecting the solid particles; washing the solid particles with a washing agent to remove the excess acrylic dispersant; and removing the washing agent to form a powder having a mean volume average particle size from (10) to (300) &#x3bc;m, a sphericity from (0.92) to (1.0), a particle size distribution from (1) to less than (2), a particle density from (98)% to (100)%, and a flow rate in a large funnel from (1) to (5) seconds.

Process for forming a powder

According to at least one embodiment of the present disclosure, polyethylene formulations and modified polyethylene compositions are provided. Embodiments of the polyethylene formulation may include a free radical generator; and a multimodal polyethylene composition. The multimodal polyethylene composition may include a peak in a temperature range of 95&#xb0; C. to 120&#xb0; C. in the elution profile via improved comonomer composition distribution (iCCD), wherein a polyethylene fraction area is an area in the elution profile beneath the peak of the polyethylene fraction between 95&#xb0; C. and 120&#xb0; C., and wherein the polyethylene fraction area comprises at least 20% of the total area of the elution profile and a molecular weight (M) of less than 80,000 g/mol in the temperature range of from 95&#xb0; C. to 120&#xb0; C. on an elution profile via iCCD. The modified polyethylene composition may be the reaction product of the free radical generator and the multimodal polyethylene composition.

Polyethylene compositions

The present disclosure provides a process. The process includes (i) melt blending, in an extruder, (a) a polyolefin phase and (b) an aqueous phase in the presence of (c) at least one dispersant selected from an acrylic dispersant, a poloxamer dispersant, and combinations thereof; (ii) producing an interfacial tension from 0.1 dynes/cm to 25 dynes/cm; (iii) forming a polyolefin aqueous dispersion having from 25 wt % to 90 wt % solids content of dispersion; and (iv) removing the water from the polyolefin aqueous dispersion to form a powder. The powder has a mean volume average particle size from 10 &#x3bc;m to 300 &#x3bc;m, a sphericity from 0.92 to 1.0, a particle size distribution from 1 to less than 2, and a particle density from 98% to 100%.

Hydroxycarboxylic acids, e.g., 3-hydroxypropionic acid, and/or their ammonium salts are dehydrated to their corresponding unsaturated carboxylic acids, e.g., acrylic acid, by a process that uses a catalyst comprising ammonium bisulfate. The use of ammonium bisulfate reduces or eliminates the problems associated with processes that use sulfuric acid as a dehydrating catalyst, e.g, excess sulfuric acid consumption and/or recovery.

Ammonium bisulfate catalyzed dehydration of beta-hydroxy acids

Methods and systems for producing high purity 3-hydroxypropionic acid (3-HP) from an aqueous medium, such as a fermentation broth, are described. Aqueous 3-HP solution can be purified by flash evaporation wherein the 3-HP is vaporized at an elevated temperature without conversion to acrylic acid. This process can be integrated with downstream processes for producing other chemical and consumer products.

3-hydroxypropionic acid compositions

Growing community of inventors

Midland, MI, United States of America

Sanjib Biswas