公开(公告)号：US12145344B2

公开(公告)日：2024-11-19

申请号：US17754753

申请日：2020-11-11

Applicant: Dow Global Technologies LLC

Inventor： Karlheinz Hausmann ,  Justice Alaboson ,  Jian Wang ,  Brayden E. Glad ,  Ronald Wevers ,  Sanjib Biswas ,  Andrew T. Heitsch ,  Mridula Kapur ,  Didem Oner-Deliormanli ,  Joshua B. Gaubert ,  Alexander Williamson ,  Mehmet Demirors

IPC: B32B27/08 ,  B32B27/30 ,  B32B27/32 ,  B32B27/34

Abstract: 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/cm3 and a melt index (I2) 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 using 13C NMR, wherein the density of the polyethylene-based composition is at least 0.965 g/cm3, and wherein the melt index (I2) of the polyethylene-based composition is 0.5 to 10 g/10 minutes.

公开(公告)号：US12110371B2

公开(公告)日：2024-10-08

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: B32B27/32 ,  B29C48/08 ,  B29C48/21 ,  B32B27/08 ,  B32B27/16 ,  B32B27/20 ,  C08J5/18 ,  C08L23/06 ,  B29C48/00 ,  B29K23/00

CPC classification number: C08J5/18 ,  B29C48/08 ,  B29C48/21 ,  B32B27/08 ,  B32B27/16 ,  B32B27/205 ,  B32B27/32 ,  C08L23/06 ,  B29C48/0018 ,  B29K2023/0625 ,  B32B2250/242 ,  B32B2307/518 ,  B32B2307/54 ,  B32B2307/72 ,  C08J2323/06 ,  C08J2423/06 ,  C08L2203/16 ,  C08L2205/025 ,  C08L2314/02

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 I2 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：US12104301B2

公开(公告)日：2024-10-01

申请号：US17293188

申请日：2019-11-20

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Mehmet Demirors ,  Fabricio Arteaga Larios ,  Mridula Kapur ,  Philip P. Fontaine ,  David T. Gillespie ,  Yijian Lin ,  Lanhe Zhang ,  Sanjib Biswas ,  Eduardo Alvarez ,  Aleksandar Stoiljkovic ,  Rajen M. Patel

IPC: D04H3/007 ,  C08F210/16 ,  D01F6/46 ,  D01F8/06 ,  D04H1/4291

CPC classification number: D04H3/007 ,  D01F6/46 ,  D01F8/06 ,  D04H1/4291 ,  C08F210/16 ,  C08F2500/03 ,  C08F2500/06 ,  C08F2500/12 ,  D10B2321/021 ,  D10B2321/022 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/03 ,  C08F2500/02 ,  C08F2500/06 ,  C08F2500/29 ,  C08F210/16 ,  C08F2/001 ,  C08F210/16 ,  C08F4/64193

Abstract: 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/cm3, 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 (Mw(GPC)/Mn(GPC)) 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.

公开(公告)号：US11969976B2

公开(公告)日：2024-04-30

申请号：US17632468

申请日：2020-08-04

Applicant: Dow Global Technologies LLC ,  Dow Quimica de Colombia S.A.

Inventor： Jorge Mario Rodriguez Camelo ,  Marlos Guintini de Oliveira ,  Nicolas Cardoso Mazzola ,  Sanjib Biswas ,  Joshua B. Gaubert ,  Douglas S. Ginger ,  Mridula Kapur ,  Didem Oner-Deliormanli ,  Mehmet Demirors

IPC: B32B27/08 ,  B32B27/32

CPC classification number: B32B27/08 ,  B32B27/32 ,  B32B2250/05 ,  B32B2250/242 ,  B32B2307/558 ,  B32B2307/5825 ,  B32B2307/72 ,  B32B2307/732 ,  B32B2439/46

Abstract: 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/cm3 to 0.936 g/cm3 and a melt index (I2) of 0.25 g/10 minutes to 2.0 g/10 minutes.

公开(公告)号：US11939417B2

公开(公告)日：2024-03-26

申请号：US17056473

申请日：2019-05-29

Applicant: Dow Global Technologies LLC

Inventor： Linfeng Chen ,  Mingzhe Yu ,  Mehmet Demirors ,  Andrew T. Heitsch ,  Jeffrey A. Sims ,  David Gordon Barton ,  Kurt F. Hirsekorn ,  Peter N. Nickias

IPC: C08F4/655 ,  C08F2/06 ,  C08F4/685 ,  C08F10/02

CPC classification number: C08F4/6557 ,  C08F2/06 ,  C08F4/685 ,  C08F10/02

Abstract: A heterogeneous procatalyst includes a preformed heterogeneous procatalyst and a metal-ligand complex. The preformed heterogeneous procatalyst includes a titanium species and a magnesium chloride (MgCl2) support. The metal-ligand complex has a structural formula (L)aM(Y)m(XR2)b, where M is a metal cation; each L is a neutral ligand or (═O); each Y is a halide or (C1-C20)alkyl; each XR2 is an anionic ligand in which X is a heteroatom or a heteroatom-containing functional group and R2 is (C1-C20)hydrocarbyl or (C1-C20) heterohydrocarbyl; n is 0, 1, or 2; m is 0-4; and b is 1-6. The metal-ligand complex is overall charge neutral. The heterogeneous procatalyst exhibits improved average molecular weight capability. A catalyst system includes the heterogeneous procatalyst and a cocatalyst. Processes for producing the heterogeneous procatalyst and processes for producing ethylene-based polymers utilizing the heterogeneous procatalyst are also disclosed.

公开(公告)号：US20230072649A1

公开(公告)日：2023-03-09

申请号：US17789424

申请日：2020-12-21

Applicant: Dow Global Technologies LLC

Inventor： Sanjib Biswas ,  Rahul Sharma ,  Jacquelyn A. DeGroot ,  Erica Spiekermann ,  Douglas S. Ginger ,  Jian Wang ,  Mehmet Demirors ,  David T. Gillespie ,  Hien Q. Do ,  Philip P. Fontaine

IPC: C08L23/08 ,  C08F210/02 ,  C08J5/18

Abstract: Embodiments of a polyethylene composition are provided, which may include a first polyethylene fraction comprising at least one peak in a temperature range of from 35° C. to 70° C. in an elution profile via improved comonomer composition distribution (iCCD) analysis method, where a first polyethylene area fraction is an area in the elution profile from 35° C. to 70° C., and where the first polyethylene fraction area comprises from 25% to 65% of the total area of the elution profile; and a second polyethylene fraction comprising at least one peak in a temperature range of from 85° C. to 120° C. in the elution profile, where a second polyethylene area fraction is an area in the elution profile from 85° C. to 120° C., and where the second polyethylene fraction area comprises at least 20% of the total area of the elution profile.

公开(公告)号：US20220305763A1

公开(公告)日：2022-09-29

申请号：US17632706

申请日：2020-08-04

Applicant: Dow Global Technologies LLC

Inventor： Georgia Natacha Eftalie Bitinis ,  Albert Carbonell ,  Peter Hermann Roland Sandkuehier ,  Sanjib Biswas ,  Mehmet Demirors ,  Jashua B. Gaubert ,  Mridula Kapur ,  Didem Oner-Deliormanli

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

Abstract: 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.

公开(公告)号：US20220017666A1

公开(公告)日：2022-01-20

申请号：US17294538

申请日：2019-11-26

Applicant: Dow Global Technologies LLC

Inventor： Hayley A. Brown ,  Carmelo Declet Perez ,  John O. Osby ,  Sean W. Ewart ,  Sarat Munjal ,  Christopher R. Eddy ,  Mehmet Demirors ,  Jonathan D. Mendenhall ,  Ivan A. Konstantinov ,  Arkady L. Krasovskiy

IPC: C08F210/02 ,  C08F236/06 ,  C08F236/22 ,  C08F2/01 ,  C08L23/08

Abstract: The present disclosure provides a polymer composition. In an embodiment, an ethylene-based polymer composition is provided and is formed by high pressure (greater than or equal to 100 MPa), free-radical polymerization, by reacting: ethylene monomer and a mixture of hydrocarbon-based molecules, with each hydrocarbon-based molecule comprising three or more terminal alkene groups.

公开(公告)号：US20210332170A1

公开(公告)日：2021-10-28

申请号：US17371728

申请日：2021-07-09

Applicant: Dow Global Technologies LLC

Inventor： Linfeng Chen ,  Mehmet Demirors

IPC: C08F210/16 ,  C08F10/00

Abstract: A modified Ziegler-Natta procatalyst that is a product mixture of modifying an initial Ziegler-Natta procatalyst with a molecular (pro)catalyst, and optionally an activator, the modifying occurring before activating the modified Ziegler-Natta procatalyst with an activator and before contacting the modified Ziegler-Natta procatalyst with a polymerizable olefin. Also, a modified catalyst system prepared therefrom, methods of preparing the modified Ziegler-Natta procatalyst and the modified catalyst system, a method of polymerizing an olefin using the modified catalyst system, and a polyolefin product made thereby.

公开(公告)号：US20210292528A1

公开(公告)日：2021-09-23

申请号：US16330617

申请日：2017-08-21

Applicant: Dow Global Technologies LLC

Inventor： Nicolas Cardoso Mazzola ,  Teresa P. Karjala ,  João Gargalaka, Jr. ,  Mustafa Bilgen ,  Marcelo Delmar Cantu ,  Mehmet Demirors ,  Jorge Caminero Gomes

IPC: C08L23/08 ,  C08J5/18

Abstract: 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, I2, 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/cm3; a melt flow ratio, I10/I2, wherein I10 is 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.