公开(公告)号：US20210246274A1

公开(公告)日：2021-08-12

申请号：US16973649

申请日：2019-06-13

Applicant: Dow Global Technologies LLC

Inventor： Kyle E. Hart ,  Mehmet Demirors ,  Timothy W. Gambrel ,  Philip P. Fontaine ,  Vivek Kalihari ,  Francis O. Olajide, Jr. ,  Rajen M. Patel

IPC: C08J5/18

Abstract: A blown film having a bimodal ethylene-based polymer including a high density fraction (HDF) from 3.0% to 25.0%, an I10/I2 ratio from 5.5 to 7.5, a short chain branching distribution (SCBD) less than or equal to 10 C, a zero shear viscosity ratio from 1.0 to 2.5, a density from 0.902 g/cc to 0.925 g/cc, and a melt index (I2) from 0.5 g/10 mins to 2.0 g/10 mins.

公开(公告)号：US10851190B2

公开(公告)日：2020-12-01

申请号：US16410484

申请日：2019-05-13

Applicant: Dow Global Technologies LLC

Inventor： Mehmet Demirors ,  Teresa P. Karjala ,  Nilesh R. Savargaonkar ,  Rajen M. Patel ,  Sylvie Desjardins

IPC: C08F110/02 ,  C08F10/02 ,  C08F210/16 ,  C08J5/18 ,  D01F6/04 ,  C08F4/685

Abstract: Mono- and multi-layer films comprising a polyethylene composition which comprises the reaction product of ethylene and optionally one or more alpha olefin comonomers in the presence of a catalyst composition comprising a multi-metallic procatalyst via a solution polymerization process in at least one reactor; wherein said polyethylene composition is characterized by one or more of the following properties: a melt index, I2, measured according to ASTM D 1238 (2.16 kg @ 190° C.), from 0.1 to 5 g/10 min; density, measured according to ASTM D-792, from 0.910 to 0.935 g/cc; melt flow ratio, I10/I2, wherein I10 is measured according to ASTM D1238 (10 kg @ 190° C.), from 6 to 7.4; and molecular weight distribution, (Mw/Mn) from 2.5 to 3.5 are provided. Also provided are articles made from the mono- and/or multi-layer films.

公开(公告)号：US20200148799A1

公开(公告)日：2020-05-14

申请号：US16617128

申请日：2018-06-01

Applicant: Dow Global Technologies LLC

Inventor： John O. Osby ,  Mehmet Demirors ,  Ivan A. Konstantinov

IPC: C08F210/02 ,  C08F210/18 ,  C08L101/00

Abstract: An ethylene-based polymer formed from reacting at least the following: ethylene and at least one asymmetrical polyene, and wherein the reaction takes place in the presence of at least one free-radical initiator; and wherein the at least one asymmetrical polyene is selected from Structure A, as described herein; Structure B, as described herein; or a combination of Structure A and Structure B.

公开(公告)号：US10357948B2

公开(公告)日：2019-07-23

申请号：US15302359

申请日：2014-04-16

Applicant: Dow Global Technologies LLC ,  Jian-ping Pan ,  Yijian Lin ,  Xiao Bing Yun ,  Mehmet Demirors

Inventor： Jian-ping Pan ,  Yijian Lin ,  Xiao Bing Yun ,  Mehmet Demirors

IPC: B32B27/32 ,  B29C55/12 ,  B32B27/08 ,  C08L23/08 ,  B29C55/00 ,  B32B27/30 ,  B29K23/00

Abstract: A multilayer ethylene-based shrink films comprising a core layer comprising a polyethylene resin, and two skin layers, wherein the core layer is positioned between the two skin layers, wherein the polyethylene resin comprises greater than 50 mol. % of the units derived from ethylene and less than 30 mol. % of the units derived from one or more alpha-olefin comonomers, has greater than 50% of the copolymer fraction eluting between 75.0° C. and 95.0° C. as determined by Crystallization Elution Fractionation (CEF), and has a density ranging from 0.915 to 0.940 g/cc, and wherein the film is biaxially-oriented.

公开(公告)号：US10336893B2

公开(公告)日：2019-07-02

申请号：US15531649

申请日：2015-12-18

Applicant: Dow Global Technologies LLC

Inventor： Teresa Karjala ,  Sean Ewart ,  Mehmet Demirors ,  Nicolas C. Mazzola

IPC: C08L23/06 ,  C08L23/08 ,  C08L23/26

Abstract: The invention provides a process to form a second composition comprising a modified ethylene-based polymer, the process comprising the step of contacting under thermal treatment conditions a first composition comprising a first ethylene-based polymer, and the following: (A) at least one carbon-carbon (C—C) free radical initiator; and (B) at least one free radical initiator other than a C—C free radical initiator of (A) (a non-C—C free radical initiator). The melt strength of the second composition is typically at least 15% or greater than the melt strength of the first composition. The second composition typically has a gel content less than or equal to 40.

公开(公告)号：US10214622B2

公开(公告)日：2019-02-26

申请号：US15652606

申请日：2017-07-18

Applicant: Dow Global Technologies LLC

Inventor： Jerzy Klosin ,  Ruth Figueroa ,  Pulikkottil J. Thomas ,  Mehmet Demirors ,  Sylvie Desjardins ,  Mridula Kapur ,  Philip P. Fontaine

IPC: C08J5/18 ,  C07F7/18 ,  B65D51/26 ,  C08F210/16 ,  C08L23/06 ,  C08L23/08 ,  C07F5/00 ,  C08F4/64 ,  C08F4/60 ,  C08L23/02 ,  C08F210/14

Abstract: The instant invention provides procatalysts and catalyst systems for olefin polymerization, olefin based polymers polymerized therewith, and process for producing the same. In one embodiment, the instant invention provides a procatalyst comprising a metal-ligand complex of formula (I):

公开(公告)号：US10214602B2

公开(公告)日：2019-02-26

申请号：US15357931

申请日：2016-11-21

Applicant: Dow Global Technologies LLC

Inventor： Mehmet Demirors ,  Ruth Figueroa ,  Jerzy Klosin ,  Pulikkottil J. Thomas ,  Sylvie Desjardins ,  Mridula Kapur ,  Philip P. Fontaine

IPC: C08F4/76 ,  C08F210/16 ,  C08F4/60

Abstract: The instant invention provides a polymerization process for producing ethylene based polymers.In one embodiment, the instant invention provides a polymerization process for producing ethylene based polymers comprising: polymerizing ethylene with optionally one or more α-olefins in the presence of one or more first catalyst systems and optionally one or more second catalyst systems in a single reactor, wherein first catalyst system comprises; (a) one ore more procatalysts comprising a metal-ligand complex of formula (I):

公开(公告)号：US09777083B2

公开(公告)日：2017-10-03

申请号：US15308988

申请日：2015-05-08

Applicant: Dow Global Technologies LLC

Inventor： Sean W. Ewart ,  Teresa P. Karjala ,  Mehmet Demirors ,  Christopher R. Eddy

IPC: C08F110/02 ,  C08F10/02 ,  C08F4/00

CPC classification number: C08F110/02 ,  C08F10/02 ,  C08F4/00 ,  C08F210/02 ,  C08F220/18 ,  C08F218/08 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/11 ,  C08F2500/12 ,  C08F2500/04

Abstract: An ethylene-based polymer, e.g., LDPE, with a low dissipation factor is made by a process comprising the step of contacting at polymerization conditions ethylene and, optionally, one or more comonomers, e.g., an alpha-olefin, with at least one carbon-carbon (C—C) hydrocarbyl, free-radical initiator of Structure 1: wherein R1, R2, R3, R4, R5 and R6, are each, independently, hydrogen or a hydrocarbyl group and wherein, optionally, two or more R groups (R1, R2, R3, R4, R5 and R6) form a ring structure, with the provisos that at least one of R2 and R5, and at least one of R3 and R6 is a hydrocarbyl group of at least two carbon atoms, e.g., an alkaryl of at least seven carbon atoms.

公开(公告)号：US20170073439A1

公开(公告)日：2017-03-16

申请号：US15308988

申请日：2015-05-08

Applicant: Dow Global Technologies LLC

Inventor： Sean W. Ewart ,  Teresa P. Karjala ,  Mehmet Demirors ,  Christopher R. Eddy

IPC: C08F110/02

CPC classification number: C08F110/02 ,  C08F10/02 ,  C08F4/00 ,  C08F210/02 ,  C08F220/18 ,  C08F218/08 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/11 ,  C08F2500/12 ,  C08F2500/04

Abstract: An ethylene-based polymer, e.g., LDPE, with a low dissipation factor is made by a process comprising the step of contacting at polymerization conditions ethylene and, optionally, one or more comonomers, e.g., an alpha-olefin, with at least one carbon-carbon (C—C) hydrocarbyl, free-radical initiator of Structure 1: wherein R1, R2, R3, R4, R5 and R6, are each, independently, hydrogen or a hydrocarbyl group and wherein, optionally, two or more R groups (R1, R2, R3, R4, R5 and R6) form a ring structure, with the provisos that at least one of R2 and R5, and at least one of R3 and R6 is a hydrocarbyl group of at least two carbon atoms, e.g., an alkaryl of at least seven carbon atoms.

Abstract translation: 通过包括以下步骤的方法制备具有低损耗因子的乙烯类聚合物，例如LDPE，所述方法包括在聚合条件下使乙烯和任选的一种或多种共聚单体（例如α-烯烃）与至少一种碳 （C-C）烃基，自由基引发剂，其中R 1，R 2，R 3，R 4，R 5和R 6各自独立地为氢或烃基，并且其中任选地，两个或多个R基团 （R 1，R 2，R 3，R 4，R 5和R 6）形成环结构，条件是R 2和R 5中的至少一个以及R 3和R 6中的至少一个是至少两个碳原子的烃基，例如 ，至少7个碳原子的烷芳基。

公开(公告)号：US20170029583A1

公开(公告)日：2017-02-02

申请号：US15302967

申请日：2014-04-09

Applicant: Dow Global Technologies LLC

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

IPC: C08J5/18 ,  B32B27/16 ,  C08L23/06 ,  B32B27/32

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.

Abstract translation: 一种包含第一聚乙烯组合物的第一取向膜，其包含：20至50重量％的密度大于0.925g / cc且I2低于2g / 10min的第一线性低密度聚乙烯聚合物; 和80至50重量％的密度低于或等于0.925g / cc且I2大于或等于2g / 10min的第二线性低密度聚乙烯聚合物; 其中所述第一聚乙烯组合物具有0.5至10g / 10min的12和0.910至0.940g / cc的密度。