公开(公告)号：US20210079139A1

公开(公告)日：2021-03-18

申请号：US16956231

申请日：2018-12-19

Applicant: Dow Global Technologies LLC

Inventor： Sarat Munjal ,  Brian W. Kolthammer ,  Mehmet Demirors ,  Michael D. Turner ,  Joshua B. Gaubert ,  Yijian Lin

IPC: C08F210/16 ,  C08F2/00 ,  C08F2/01 ,  C08F2/06 ,  C08F4/64 ,  C08F4/655 ,  C08F4/659

Abstract: Embodiments of methods for producing a trimodal polymer in a solution polymerization process comprise three solution polymerization reactors organized in parallel or in series.

公开(公告)号：US20210079138A1

公开(公告)日：2021-03-18

申请号：US16956218

申请日：2018-12-19

Applicant: Dow Global Technologies LLC

Inventor： Alec Y. Wang ,  Johnathan E. DeLorbe ,  Joshua B. Gaubert ,  Sarat Munjal ,  Mehmet Demirors ,  Yijian Lin

IPC: C08F210/16 ,  C08F2/01 ,  C08F2/04 ,  C08L23/08

Abstract: Embodiments of a method for producing a multimodal ethylene-based polymer having a first, second, and third ethylene-based component, wherein the multimodal ethylene based polymer results when ethylene monomer, at least one C3-C12 comonomer, solvent, and optionally hydrogen pass through a first solution, and subsequently, a second solution polymerization reactor. The first solution polymerization reactor or the second solution polymerization reactor receives both a first catalyst and a second catalyst, and a third catalyst passes through either the first or second solution polymerization reactors where the first and second catalysts are not already present. Each ethylene-based component is a polymerized reaction product of ethylene monomer and C3-C12 comonomer catalyzed by one of the three catalysts.

公开(公告)号：US20200010631A1

公开(公告)日：2020-01-09

申请号：US16573057

申请日：2019-09-17

Applicant: Dow Global Technologies LLC

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

IPC: C08J5/18 ,  B32B27/32 ,  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 I2 lower than 2 g/10 min; 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 I2 greater than or equal to 2 g/10 min; wherein the first polyethylene composition has an 12 from 0.5 to 10 g/10 min and a density from 0.910 to 0.940 g/cc is provided.

公开(公告)号：US10457799B2

公开(公告)日：2019-10-29

申请号：US15574261

申请日：2015-06-30

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：US20190210333A1

公开(公告)日：2019-07-11

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 ,  B29C48/21 ,  B29C55/00 ,  B29C55/16

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：US20190126598A1

公开(公告)日：2019-05-02

申请号：US16094619

申请日：2017-06-28

Applicant: Dow Global Technologies LLC

Inventor： Yijian Lin ,  Wenyi Huang ,  Selim Bensason

IPC: B32B27/08 ,  B32B27/32 ,  B32B27/30 ,  B32B27/28 ,  B65D65/40 ,  B32B7/035 ,  B32B38/00

Abstract: The present invention provides multilayer films, packages formed from such films, and methods of making multilayer films. In one aspect, a multilayer film comprises multilayer film comprising at least 3 layers, each layer having opposing facial surfaces and arranged in the order A/B/C, wherein Layer A comprises a high density polyethylene having a Mw,cc/Mn,cc of at least 6.0, a Mz,abs of at least 500,000 grams/mol as measured by triple detector GPC, and a density of 0.957-0.970 g/cm3, wherein the high density polyethylene comprises at least 90 percent by weight of Layer A; Layer B comprises a gas permeation layer, wherein a top facial surface of Layer B is in adhering contact with a bottom facial surface of Layer A; and Layer C comprises a high density polyethylene having a Mw,cc/Mn,cc of at least 6.0, a Mz,abs of at least 500,000 grams/mol as measured by triple detector GPC, and a density of 0.957-0.970 g/cm3, wherein the high density polyethylene comprises at least 90 percent by weight of Layer C and wherein a top facial surface of Layer C is in adhering contact with a bottom facial surface of Layer B, wherein the film is oriented in the machine direction and wherein the film exhibits a normalized carbon dioxide transmission rate of at least 3000 cm3·mil/100 in2/day when measured according to ASTM F-2476 at 23° C., 0% relative humidity, and 1 atm, and wherein the film exhibits a ratio of the carbon dioxide transmission rate to an oxygen transmission rate of at least 4.0, when the oxygen transmission rate is measured according to ASTM D3985 at 23° C., 0% relative humidity, and 1 atm.

公开(公告)号：US20180215121A1

公开(公告)日：2018-08-02

申请号：US15322500

申请日：2015-06-29

Applicant: Dow Global Technologies LLC

Inventor： Patrick Chang Dong Lee ,  Bruce Menning ,  Yijian Lin ,  Robert E. Wrisley ,  Kurt W. Olson ,  Joseph Dooley

IPC: B32B3/18 ,  B32B5/14 ,  B32B27/08 ,  B32B27/20 ,  B32B27/32 ,  B32B27/30 ,  B32B27/28 ,  B32B27/34

CPC classification number: B32B3/18 ,  B29C48/08 ,  B29C48/19 ,  B29K2023/0625 ,  B29K2995/0065 ,  B29K2995/0068 ,  B29L2007/007 ,  B29L2009/00 ,  B32B5/142 ,  B32B27/08 ,  B32B27/20 ,  B32B27/285 ,  B32B27/30 ,  B32B27/306 ,  B32B27/32 ,  B32B27/34 ,  B32B2250/05 ,  B32B2250/24 ,  B32B2250/42 ,  B32B2264/0214 ,  B32B2264/04 ,  B32B2264/067 ,  B32B2264/10 ,  B32B2270/00 ,  B32B2307/724 ,  B32B2439/70

Abstract: The present disclosure provides a multilayer film. The multilayer film includes a core component comprising from 10 to 50,000 alternating stripes of a layer A and a layer B. Layer A has a width from 10 μηη to 10 mm and comprises a film material. Layer B has a width from 10 μm to 10 mm and comprises a transport material. The core component has a CO2 transmission rate (CO2TR) from 50,000 to 300,000 cc-mil/m2/24 hour/atm and water transmission rate (WVTR) from 50 to 500 g-mil/m2/24 hour.

公开(公告)号：US20180134881A1

公开(公告)日：2018-05-17

申请号：US15574261

申请日：2015-06-30

Applicant: Dow Global Technologies LLC

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

IPC: C08L23/06 ,  C09D123/06

CPC classification number: C08L23/06 ,  C08L2205/025 ,  C08L2207/062 ,  C08L2207/066 ,  C09D123/06 ,  C08L23/0815

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：US20170326853A1

公开(公告)日：2017-11-16

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: B32B27/32 ,  B32B37/08 ,  B32B27/08 ,  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.