Dow Global Technolgoies LLC

Todd A Hogan

Yijian Lin

Mridula Babli Kapur

Marc S Black

Jeffrey E Bonekamp

Peter J Schulz

Matthew J Turpin

Keran Lu

Brian W Walther

William James Michie, Jr

David T Gillespie

Yushan Hu

Malcolm F Finlayson

Stéphane Costeux

Anthony Charles Neubauer

John L Sugden

Roger L Kuhlman

Kim Louis Walton

Colin Li Pi Shan

Debkumar Bhattacharjee

Dane Chang

Colin LiPiShan

Wenyi Huang

Jill M Martin

Stephen M Hoenig

Ronald P Markovich

Angela I Padilla-Acevedo

Joseph Dooley

Andrew T Heitsch

Peter S Martin

Siddharth Ram Athreya

Felipe Martinez Barreneche

Felipe B Martinez

Chuan C He

Laura Nunez

Kumar N Sanketh

Joel D Wieliczko

Shadid Askar

Todd O Pangburn

William J Michie

Felipe F Martinez

Mridula (babli) Kapur

Jr Michie William J

Anthony C Neubauer

Stephane Costeux

In various embodiments, a polyethylene formulation has a density of greater than 0.940 g/cmwhen measured according to ASTM D792, and a high load melt index (I) of 1.0 g/10 min to 10.0 g/10 min when measured according to ASTM D1238 at 190&#xb0; C. and a 21.6 kg load. Moreover, the polyethylene formulation has a peak molecular weight (M) of less than 50,000 g/mol, a number average molecular weight (M) of less than 30,000 g/mol, and a weight fraction (w1) of molecular weight (MW) less than 10,000 g/mol of less than or equal to 10.5 wt %, as determined by Gel Permeation Chromatography (GPC). Articles made from the polyethylene formulation, such as articles made by blow molding processes are also provided.

Polyethylene formulations for large part blow molding applications

The present disclosure provides a plastic living hinge. The plastic living hinge includes a blend containing (A) an ethylene-based polymer; and (B) a composite component selected from the group consisting of a block composite, a crystalline block composite, and a combination thereof.

Plastic living hinges with block composite polymer

The present disclosure provides a plastic living hinge. The plastic living hinge includes a blend containing (A) an ethylene-based polymer; (B) a propylene-based polymer; and (C) a composite component selected from the group consisting of a block composite, a crystalline block composite, and a combination thereof.

Polyethylene formulations, articles produced therefrom, and methods of making articles are provided. The polyethylene formulation includes a multimodal high density polyethylene (HDPE) composition, and 1 ppm to 10,000 ppm of a nucleating agent, wherein the multimodal HDPE composition comprises a density of 0.940 g/cmto 0.970 g/cmwhen measured according to ASTM D792, and a melt index (I) of 0.01 g/10 min. to 1.0 g/10 min. when measured according to ASTM D1238 at 190&#xb0; C. and a 2.16 kg load, and wherein the multimodal HDPE composition comprises an infrared cumulative detector fraction (CDF) of greater than 0.27 and an infrared cumulative detector fraction to light scattering cumulative detector fraction ratio (CDF/CDF) from 0.7 to 2.0.

Polyethylene formulations with improved barrier and toughness for molding applications

A molded article formed from a polymer composition, the polymer composition consisting essentially of: an ethylene homopolymer or ethylene/alpha-olefin copolymer; greater than 20 ppm of a fluoropolymer; and optionally, up to 5 wt. % of one or more of processing aids, acid neutralizers, stabilizers, phosphites, antioxidants, metal de-activators, pigments or colorants, or fillers; wherein the molded article exhibits an oxygen transmission rate [OTR, (cc*mm)/(m*day*atm)]&#x2264;&#x2212;3181 (cc*mm)/g*m*day*atm)&#xd7;[Density, g/cc]+3077, (cc*mm)/(m*day*atm).

Molded articles and methods thereof

A polyethylene composition suitable for use in a living hinge component, the composition comprising a first ethylene-based polymer component, wherein the first ethylene-based polymer component has a density of from 0.940 g/cc to less than 0.960 g/cc, a melt index, I, of less than 0.5 g/10 min, and a weight average molecular weight, M, as measured by gel permeation chromatography using conventional calibration, of greater than or equal to 200,000 g/mol, and a second ethylene-based polymer component, wherein the composition has an overall density of from 0.945 g/cc to 0.960 g/cc and an overall melt index, I, of from 10 g/10 min to 70 g/10 min.

Polyethylene compositions having living hinge properties

The present disclosure provides a container and a process for producing the container. In an embodiment, the process includes placing a sleeve bag on valve assembly (SBoV) in a blow mold apparatus. The blow mold apparatus has two opposing and movable molds. The SBoV has a valve seat. The process includes extending a parison of flowable polymeric material around the SBoV and between the opposing molds. The process includes moving the opposing molds to a closed position and pressing an upstream portion of the parison against the valve seat. The process includes blow molding a downstream portion of the parison into a container-shape within the closed mold. The process includes forming a container with the valve seat melt bonded to a neck portion of the container.

Container with molded bag on valve assembly

The present disclosure provides a dispenser for pressurized material. In an embodiment, the dispenser for pressurized material includes a container half having an exposed edge and a closure member at the exposed edge. The container half has a cup half in an interior top portion. The dispenser includes a reciprocal container half having a reciprocal exposed edge and a reciprocal closure member at the reciprocal exposed edge. The reciprocal container half has a reciprocal cup half in an interior top portion. The closure member and the reciprocal closure member matingly engage along the exposed edges to attach the container half to the reciprocal container half and form a container. The dispenser includes a sleeve bag on valve (SBoV) assembly in an interior of the container. The SBoV assembly includes a valve seat. The cup and the reciprocal cup support the valve seat to secure the SBoV assembly in the container.

Container with spray valve

This invention relates to coupling of polyethylene resins, more specifically coupling of polyethylene resins for use in extruded profiles, especially extruded profiles for sheet extrusion and cut sheet thermoforming applications and geomembranes. The process involves conveying a HDPE resin through an extruder, wherein the extruder comprises a feed zone, a first melt zone downstream of the feed zone, a second melt zone downstream of the first melt zone, and a third melt zone downstream of the second melt zone. The resin is melted in the first zone, contacted with oxygen in the second melt zone, and contacted antioxidant in the third melt zone.

Process for making tailored polyetheylene resins for sheets

A polymer composition comprises a low-molecular-weight (LMW) ethylene polymer component and a high-molecular-weight (HMW) ethylene polymer component coupled with a polysulfonyl azide. Preferably, the LMW polyethylene component and the HMW polyethylene component co-crystallize in the composition such that it exhibits a single or substantially single peak in a lamella thickness distribution (LTD) curve. The ethylene polymer for the LMW and the HMW polyethylene components can be either homopolymer or ethylene copolymer. Preferably, both components are an ethylene copolymer of the same, or different, composition (that is, with the same or different comonomers). A method of making a pipe that includes selecting a polymer composition having a substantially single peak in the LTD curve is described. Compositions comprising a chromium-catalyzed ethylene polymer, coupled with a polysulfonyl azide are also described herein.

Rheology modified relatively high melt strength polyethylene compositions and methods of making pipes, films, sheets, and blow-molded articles

The present disclosure is directed to polymeric compositions which form gloss resins suitable for thermoforming applications. The polymeric compositions include a reaction product composed of a clarified random propylene/&#x3b1;-olefin copolymer, a coupling agent, and optionally an elastomer. Methods for adjusting the melt flow rate of the gloss resin are also disclosed. Adjustment of the gloss resin melt flow rate advantageously enables scrap thermoplastic material containing the gloss resin to be recycled in a thermoforming operation.

Gloss resins and method for making same

The instant invention is a polypropylene composition, a method of producing the same, and articles made therefrom. The polypropylene composition according to instant invention includes the reactive melt blending product of a high crystalline polypropylene having a crystallinity of at least 64 percent, an elastomer, a coupling agent, and optionally a filler. The polypropylene composition according to instant invention has a melt flow rate in the range of less than 1 g/10 minutes measured at 230&#xb0; C. under a load of 2.16 kg in accordance with ASTM-D 1238.

Polypropylene composition, a method of producing the same, and articles made therefrom

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Midland, MI, United States of America

Todd A Hogan