公开(公告)号：US20210301049A1

公开(公告)日：2021-09-30

申请号：US17260271

申请日：2019-07-18

Applicant: Dow Global Technologies LLC

Inventor： Peter S. Martin ,  Yijian Lin ,  Angela I. Padilla-Acevedo ,  Roger L. Kuhlman ,  Shadid Askar ,  Mridula Kapur ,  Todd A. Hogan ,  Joel D. Wieliczko ,  Chuan C. He

IPC: C08F210/16 ,  C08F4/6592

Abstract: In various embodiments, a polyethylene formulation has a density of greater than 0.940 g/cm3 when measured according to ASTM D792, and a high load melt index (I21) of 1.0 g/10 min to 10.0 g/10 min when measured according to ASTM D1238 at 190° C. and a 21.6 kg load. Moreover, the polyethylene formulation has a peak molecular weight (Mp(GPC)) of less than 50,000 g/mol, a number average molecular weight (Mn(GPC)) 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.

公开(公告)号：US20210206928A1

公开(公告)日：2021-07-08

申请号：US17206918

申请日：2021-03-19

Applicant: Dow Global Technologies LLC

Inventor： Yijian Lin ,  Mehmet Demirors ,  Jianping Pan ,  Xiao B. Yun

IPC: C08J5/18 ,  B32B27/32 ,  B32B27/08 ,  B29C48/21 ,  B32B27/20 ,  B29C48/08 ,  B32B27/16 ,  C08L23/06

Abstract: A first oriented film comprising a first polyethylene composition which comprises: from 20 to 50 wt % of a first linear low density polyethylene polymer having a density greater than 0.925 g/cc and an 12 lower than 2 g/10min; and from 80 to 50 wt % of a second linear low density polyethylene polymer having a density lower than or equal to 0.925 g/cc and an 12 greater than or equal to 2 g/10min; wherein the first polyethylene composition has an 12 from 0.5 to 10 g/10min and a density from 0.910 to 0.940 g/cc is provided.

公开(公告)号：US20200316922A1

公开(公告)日：2020-10-08

申请号：US16303409

申请日：2017-06-28

Applicant: Dow Global Technologies LLC

Inventor： Jong Young Lee ,  Yijian Lin ,  Martin Hill ,  Mustafa Bilgen

IPC: B32B27/08 ,  B32B27/30 ,  B32B27/32 ,  B32B38/00

Abstract: The present invention provides multilayer films and packages formed from such films. In one aspect, a multilayer film comprises Layer A which is a sealant layer having a top facial surface and a bottom facial surface, wherein Layer A comprises (a) a copolymer comprising ethylene and alkylacrylate, wherein the copolymer has a melt index (I2) of 2 to 30 g/10 minutes and wherein the total amount of alkylacrylate in the copolymer is 5 to 30 weight percent based on the weight of the copolymer, and (b) a polyolefin elastomer having a crystallinity of 30% or less and a melt index (I2) of 1.0 g/10 minutes or more; and Layer B having a top facial surface and a bottom facial surface, wherein the top facial surface of Layer B is in adhering contact with a bottom facial surface of Layer A.

公开(公告)号：US10792899B2

公开(公告)日：2020-10-06

申请号：US16325888

申请日：2017-08-14

Applicant: Dow Global Technologies LLC

Inventor： Jianping Pan ,  Xiao Bing Yun ,  Yijian Lin ,  Rongjuan Cong

IPC: B32B27/08 ,  B32B27/32 ,  B29C48/00 ,  B32B27/34 ,  B32B7/02 ,  B32B7/00 ,  B32B27/30 ,  B32B27/36 ,  B29C48/21 ,  B29C55/00 ,  B29C55/16 ,  B29L7/00 ,  B29L9/00 ,  B29L31/00

Abstract: Embodiments of the present invention relate to biaxially oriented, multilayer polyethylene films and to laminates and articles formed therefrom. In one aspect, a biaxially oriented, multilayer polyethylene film comprises Layer A which is a sealant layer p having a top facial surface and a bottom facial surface and comprising a first polyethylene, wherein the first polyethylene has a density of at least 0.900 g/cm3, an IHDF>95 of 20-60 kg/mol, and a MWHDF>95 of greater than 130 kg/mol, wherein Layer A comprises at least 50 weight percent of the first polyethylene based on the weight of Layer A, and Layer B having a top facial surface and a bottom facial surface, wherein Layer B comprises one or more additional polyethylenes, and wherein the top facial surface of Layer B is in adhering contact with a bottom facial surface of Layer A, wherein the density of the first polyethylene is at least 0.002 g/cm3 less than the density of Layer B.

公开(公告)号：US10738182B2

公开(公告)日：2020-08-11

申请号：US15959679

申请日：2018-04-23

Applicant: Dow Global Technologies LLC

Inventor： Keran Lu ,  Yijian Lin ,  Todd O. Pangburn ,  Siddharth Ram Athreya ,  Laura Nunez ,  John L. Sugden ,  Todd A. Hogan ,  Andrew Heitsch ,  David T. Gillespie

IPC: B29C45/00 ,  C08L23/06 ,  C08L23/08 ,  C08L27/18 ,  B29K23/00 ,  B29D99/00

Abstract: 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)/(m2*day*atm)]≤−3181 (cc2*mm)/g*m2*day*atm)×[Density, g/cc]+3077, (cc*mm)/(m2*day*atm).

公开(公告)号：US10723108B2

公开(公告)日：2020-07-28

申请号：US15521174

申请日：2015-10-23

Applicant: Dow Global Technologies LLC

Inventor： Jong Young Lee ,  Yijian Lin ,  Rajen M. Patel

IPC: B32B7/02 ,  B32B27/32 ,  B32B27/08 ,  B32B37/08 ,  B32B37/15

Abstract: Embodiments disclosed herein include multilayer films having at least an outer layer that includes 1) polyethylene elastomer and 2) ULDPE or VLDPE and that has a purge fraction greater than 20 percent as determined by Crystallization Elution Fractionation (CEF) test method. Embodiments disclosed herein also include related compositions to make such films and methods of making such films. The ULDPE or VLDPE can be made via Ziegler-Natta catalyst reaction techniques to provide the desired purge fraction.

公开(公告)号：US20200032039A1

公开(公告)日：2020-01-30

申请号：US16573250

申请日：2019-09-17

Applicant: Dow Global Technologies LLC

Inventor： Mehmet Demirors ,  Teresa P. Karjala ,  Yijian Lin ,  James L. Cooper

IPC: C08L23/06 ,  C09D123/06

Abstract: The invention provides a composition comprising at least the following: a) a first composition comprising at least one first ethylene-based polymer, formed by high pressure, free-radical polymerization, and wherein the first composition comprises the following properties: a melt index (I2) from 1.0 to 15.0 g/10 min, and density from 0.910 to 0.940 g/cc; b) a second composition comprising at least one second ethylene-based polymer, and wherein the second composition comprises the following properties; a melt index (I2) from 1.0 to 1000 g/10 min, a density greater than 0.940 g/cc; wherein the composition comprises the following properties: melt index (I2) from 2.0 to 20.0 g/10 min, and a density from 0.915 to 0.940 g/cc; and wherein the first composition is present in an amount from 65 to 95 wt %, based on the weight of the composition.

公开(公告)号：US20200002849A1

公开(公告)日：2020-01-02

申请号：US16486521

申请日：2018-03-07

Applicant: Dow Global Technologies LLC

Inventor： Viraj Shah ,  Yijian Lin ,  Ronald Wevers ,  Rongjuan Cong ,  Mehmet Demirors

IPC: D01F6/30 ,  D04H1/56 ,  D01D5/34 ,  D01F8/06 ,  D04H1/4291 ,  D04H3/007 ,  D04H3/16 ,  C08F210/16

Abstract: An ethylene/alpha-olefin interpolymer suitable for use in fibers and nonwovens having a density of from 0.911 to 0.939 g/cc, a Brookfield viscosity of less than or equal to 50,000 cP, and a molecular weight distribution (Mw,cc/Mn,cc) of 1.8 to 3.5, and articles thereof.

公开(公告)号：US20190322846A1

公开(公告)日：2019-10-24

申请号：US15959679

申请日：2018-04-23

Applicant: Dow Global Technologies LLC

Inventor： Keran Lu ,  Yijian Lin ,  Todd O. Pangburn ,  Siddharth Ram Athreya ,  Laura Nunez ,  John L. Sugden ,  Todd A. Hogan ,  Andrew Heitsch ,  David T. Gillespie

IPC: C08L23/06 ,  C08L23/08 ,  C08L27/18 ,  B29C45/00

Abstract: 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)/(m2*day*atm)]≤−3181 (cc2*mm)/g*m2*day*atm)×[Density, g/cc]+3077, (cc*mm)/(m2*day*atm)

公开(公告)号：US09828495B2

公开(公告)日：2017-11-28

申请号：US14576576

申请日：2014-12-19

Applicant: Dow Global Technologies LLC

Inventor： Mehmet Demirors ,  Mustafa Bilgen ,  Yijian Lin

IPC: B32B27/32 ,  C08L23/06 ,  C08J5/18

CPC classification number: C08L23/06 ,  C08J5/18 ,  C08J2323/06 ,  C08J2423/06 ,  C08L2201/10 ,  C08L2203/16 ,  C08L2205/025 ,  C08L2207/062 ,  C08L2207/066 ,  C08L2207/068 ,  C08F10/02 ,  C08F4/642 ,  C08F4/64193 ,  C08F110/02 ,  C08F2500/12 ,  C08F2500/07 ,  C08F2500/26

Abstract: Embodiments of a polyethylene polymer blend having a melt index (I2) 3.