公开(公告)号：US20230235104A1

公开(公告)日：2023-07-27

申请号：US18003423

申请日：2021-02-05

Applicant: Dow Global Technologies LLC

Inventor： Elva L. Lugo ,  Sanjib Biswas ,  Russell Cooper ,  Rajen Patel ,  Peter S. Martin ,  Stephanie M. Whited

IPC: C08F210/02 ,  C08F2/06 ,  C08F2/00 ,  C08F4/64 ,  C08L23/08

CPC classification number: C08F210/02 ,  C08F2/06 ,  C08F2/001 ,  C08F4/64193 ,  C08L23/0815 ,  C08L2203/30

Abstract: Embodiments of polyethylene compositions and articles comprising polyethylene compositions are disclosed. The polyethylene compositions may include a first polyethylene fraction area defined by an area in the elution profile in a temperature range of 70° C. to 97° C. via improved comonomer composition distribution (iCCD) analysis method; a first peak in the temperature range of 70° C. to 97° C. in the elution profile; a second polyethylene fraction area defined by an area in the elution profile in a temperature range of 97° C. to 110° C.; and a second peak in the temperature range of 97° C. to 110° C. The polyethylene composition may have a density of 0.935 g/cm3 to 0.955 g/cm3 and a melt index (I2) of 1.0 g/10 minutes to 10.0 g/10 minutes. A ratio of the first polyethylene fraction area to the second polyethylene fraction area may be less than 2.0.

公开(公告)号：US11384226B2

公开(公告)日：2022-07-12

申请号：US14762484

申请日：2014-02-10

Applicant: Dow Global Technologies LLC

Inventor： Stephanie M. Whited ,  Troy M. Tambling ,  Mridula Kapur ,  Sarah E. Patterson ,  Dane Chang ,  William J. Michie, Jr.

IPC: C08L23/08 ,  C08L23/06 ,  C08K5/43

Abstract: The invention provides a composition comprising the following components: A) a first composition, wherein the first composition comprises a first ethylene-based polymer and a second ethylene-based polymer, and wherein the ratio of the “high load melt index (I21) of the first composition” to the “high load melt index (I21) of the first ethylene-based polymer” is greater than, or equal to, 40, and B) one or more azide compounds present in an amount greater than, or equal to, 50 ppm, based on the weight of the first composition.

公开(公告)号：US11345799B2

公开(公告)日：2022-05-31

申请号：US16768294

申请日：2018-12-11

Applicant: Dow Global Technologies LLC

Inventor： Stephanie M. Whited ,  Siddharth Ram Athreya ,  Mridula Kapur ,  Alexander Stolarz ,  Adriana Velasquez

IPC: C08L23/04 ,  C08L23/08 ,  F16L11/04 ,  A01G25/02 ,  A01G25/06

Abstract: The present disclosure provides formulation. The formulation contains a high density polyethylene composition containing (i) a high molecular weight component including an ethylene/a-olefin copolymer, the high molecular weight component having a density from 0.924 to 0.930 g/cc and a high load melt index (121) from 0.3 to 0.9 g/10 min; and (ii) a low molecular weight component including an ethylene-based polymer selected from the group consisting of an ethylene homopolymer and an ethylene/a-olefin copolymer. The high density polyethylene composition has (a) a density from 0.950 to 0.956 g/cc; (b) a high load melt index (121) from 15 to 28 g/10 min; (c) an 121/12 of at least 85; (d) a notched constant tensile load failure time at 35% yield stress of greater than 90 hours; and (e) an environmental stress crack resistance (ESCR) F0 value, according to ASTM D1693—condition B (100% IGEPAL), of greater than 2,000 hours.

公开(公告)号：US10370527B2

公开(公告)日：2019-08-06

申请号：US15534383

申请日：2015-11-05

Applicant: Dow Global Technologies LLC

Inventor： Stephanie M. Whited ,  Mridula Babli Kapur ,  Yijian Lin

IPC: C08L23/06

Abstract: A polyethylene composition suitable for use in a living hinge component, the composition comprising a first ethylene-based polymer component, the first ethylene-based polymer component has a density of from 0.91.5 g/cc to less than 0.940 g/cc. and a melt index, I2.16, of less than 5 g/10 min. 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, I2.16, of from 5 g/10 min to 20 g/10 min.

公开(公告)号：US20170210891A1

公开(公告)日：2017-07-27

申请号：US15328312

申请日：2015-08-25

Applicant: Dow Global Technologies LLC

Inventor： Mridula Kapur ,  Stephanie M. Whited ,  Mark T. Jablonka

IPC: C08L23/08 ,  B65D53/00 ,  C08L23/06

CPC classification number: C08L23/0815 ,  B65D53/00 ,  C08L23/04 ,  C08L23/06 ,  C08L2203/162 ,  C08L2205/02 ,  C08L2205/025 ,  C08L2207/062 ,  C08L2314/02 ,  C08F10/02 ,  C08F2/001 ,  C08F210/16 ,  C08F2/34 ,  C08F110/02 ,  C08F2500/12 ,  C08F2500/01 ,  C08F210/14 ,  C08F2500/07

Abstract: An ethylene-based resin comprising a high molecular weight component and a low molecular weight component, wherein the high molecular weight component comprises an ethylene/alpha-olefin copolymer or ethylene homopolymer, and has a density ranging from 0.940 g/cc to 0.960 g/cc, and a high load melt index (I21.6) ranging from 4 g/10 min to 15 g/10 min, and wherein the ethylene-based resin has: an overall density ranging from greater than 0.955 to less than or equal to 0.970 g/cc, an overall melt index (I2.16) ranging from 0.5 g/10 min to 7 g/10 min, and less than 0.2 vinyls per 1000 carbon atoms.

公开(公告)号：US20140256883A1

公开(公告)日：2014-09-11

申请号：US14205678

申请日：2014-03-12

Applicant: Dow Global Technologies LLC

Inventor： William J. Michie, JR. ,  Thomas W. Kay ,  Stephanie M. Whited ,  Dale M. Elley-Bristow ,  David T. Gillespie ,  Lonnie G. Hazlitt

IPC: C08L23/08 ,  C08L23/06

CPC classification number: C08L23/08 ,  C08L23/04 ,  C08L23/06 ,  C08L23/0815 ,  C08L2203/10 ,  Y10T428/24992 ,  Y10T428/273 ,  C08L2666/06

Abstract: The instant invention is a high-density polyethylene composition, method of producing the same, articles made therefrom, and method of making such articles. The high-density polyethylene composition of the instant invention includes a first component, and a second component. The first component is a high molecular weight ethylene alpha-olefin copolymer having a density in the range of 0.915 to 0.940 g/cm3, and a melt index (I21.6) in the range of 0.5 to 10 g/10 minutes. The second component is a low molecular weight ethylene polymer having a density in the range of 0.965 to 0.980 g/cm3, and a melt index (I2) in the range of 50 to 1500 g/10 minutes. The high-density polyethylene composition has a melt index (I2) of at least 1, a density in the range of 0.950 to 0.960 g/cm3, and g′ of 1.

Abstract translation: 本发明是高密度聚乙烯组合物，其制造方法，由其制成的制品及其制造方法。 本发明的高密度聚乙烯组合物包括第一组分和第二组分。 第一组分是密度在0.915至0.940g / cm 3范围内的熔融指数（I 21.6）在0.5至10g / 10分钟范围内的高分子量乙烯α-烯烃共聚物。 第二组分是密度在0.965至0.980g / cm 3范围内的熔融指数（I 2）在50至1500g / 10分钟范围内的低分子量乙烯聚合物。 高密度聚乙烯组合物的熔体指数（I 2）至少为1，密度在0.950至0.960g / cm3，g'为1。

公开(公告)号：US08791205B2

公开(公告)日：2014-07-29

申请号：US13717247

申请日：2012-12-17

Applicant: Dow Global Technologies LLC

Inventor： William J. Michie, Jr. ,  Dane Chang ,  Lonnie G. Hazlitt ,  Stephanie M. Whited ,  Michael A. Kinnan ,  Anthony C. Neubauer ,  Thoi H. Ho

IPC: C08F8/00 ,  C08L23/04

CPC classification number: C08L23/26 ,  C08L23/0815 ,  C08L2205/02 ,  C08L2666/06

Abstract: The invention is related to compositions suitable for the fabrication of pipes, and other articles, with excellent performance properties. The invention provides a composition, comprising a blend, wherein said blend comprises a high molecular weight ethylene-based interpolymer and a low molecular weight ethylene-based interpolymer, and the high molecular weight ethylene-based interpolymer is a heterogeneously branched linear or a homogeneously branched linear ethylene-based interpolymer, and has a density from 0.922 g/cc to 0.929 g/cc, and a high load melt index (I21) from 0.2 g/10 min to 1.0 g/10 min, and the low molecular weight ethylene-based interpolymer is heterogeneously branched linear or a homogeneously branched linear ethylene-based interpolymer, and has a density from 0.940 g/cc to 0.955 g/cc, and a melt index (I2) from 6 g/10 min to 50 g/10 min. The blend has a single peak in an ATREF profile eluting above 30° C., and has a coefficient of viscosity average molecular weight (CMv) less than −0.0032 in the log(calculated Mv) versus elution temperature, said CMv calculated in the range of elution temperatures from 70° C. to 90° C. The Mv is the viscosity average molecular weight.

Abstract translation: 本发明涉及适于制造具有优异性能的管道和其它制品的组合物。 本发明提供一种包含共混物的组合物，其中所述共混物包含高分子量乙烯基互聚物和低分子量乙烯基互聚物，并且高分子量乙烯基互聚物是非均匀支化的线性或均匀分支的 线性乙烯类互聚物，密度为0.922g / cc〜0.929g / cc，高负荷熔融指数（I21）为0.2g / 10min〜1.0g / 10min，低分子量乙烯 - 基于异构支化的线型或均匀支化的线性乙烯基互聚物，其密度为0.940g / cc至0.955g / cc，熔体指数（I 2）为6g / 10min至50g / 10min 。 共混物在30℃以上洗脱的ATREF谱中具有单峰，并且在对数（计算出的Mv）相对于洗脱温度具有小于-0.0032的粘均分子量（CMv）系数，所述CMv计算在范围内 的洗脱温度从70℃至90℃.Mv是粘均分子量。