公开(公告)号：US11584816B2

公开(公告)日：2023-02-21

申请号：US17547341

申请日：2021-12-10

Applicant: Chevron Phillips Chemical Company LP

Inventor： Vivek Rohatgi ,  Ashish M. Sukhadia ,  Yongwoo Inn ,  Elizabeth M. Lanier

IPC: C08F210/16 ,  C08F10/02 ,  C08L23/08 ,  C08K5/14 ,  C08F8/00 ,  C08F210/02 ,  C08L23/06 ,  F16L9/12

Abstract: Disclosed herein are ethylene-based polymers generally characterized by a density of at least 0.94 g/cm3, a high load melt index from 4 to 20 g/10 min, a zero-shear viscosity at 190° C. from 20,000 to 400,000 kPa-sec, and a relaxation time at 190° C. from 225 to 3000 sec. These ethylene polymers can be produced by peroxide-treating a broad molecular weight distribution Ziegler-catalyzed resin, and can be used in large diameter, thick wall pipes and other end-use applications.

公开(公告)号：US09346897B2

公开(公告)日：2016-05-24

申请号：US13893516

申请日：2013-05-14

Applicant: Chevron Phillips Chemical Company LP

Inventor： Lili Cui ,  Ashish M. Sukhadia ,  Vivek Rohatgi

IPC: C08F10/02 ,  C08F210/16 ,  C08J5/18 ,  C08K5/14 ,  B29C39/00 ,  B29C49/00 ,  C08F8/00 ,  B29K23/00 ,  B29K105/00 ,  B29L7/00

CPC classification number: C08J5/18 ,  B29C39/003 ,  B29C47/0004 ,  B29C47/0021 ,  B29C47/0026 ,  B29C47/0057 ,  B29C47/385 ,  B29C47/40 ,  B29C49/0005 ,  B29K2023/0625 ,  B29K2023/0658 ,  B29K2023/08 ,  B29K2105/0085 ,  B29K2105/0094 ,  B29K2995/0088 ,  B29L2007/008 ,  C08F8/00 ,  C08F10/02 ,  C08F210/16 ,  C08F2810/10 ,  C08J2323/04 ,  C08J2323/06 ,  C08J2323/08 ,  C08J2323/26 ,  C08K5/14 ,  C08F210/14 ,  C08F2500/03 ,  C08F2500/08 ,  C08F2500/09 ,  C08F2500/17 ,  C08F2500/26 ,  C08L23/0815

Abstract: Disclosed herein are ethylene-based polymers having low densities and narrow molecular weight distributions, but high melt strengths for blown film processing. Such polymers can be produced by peroxide-treating a metallocene-catalyzed resin.

Abstract translation: 本文公开了具有低密度和窄分子量分布但是用于吹塑薄膜加工的高熔体强度的乙烯基聚合物。 这样的聚合物可以通过过氧化物处理茂金属催化的树脂来制备。

公开(公告)号：US20160053035A1

公开(公告)日：2016-02-25

申请号：US14859638

申请日：2015-09-21

Applicant: Chevron Phillips Chemical Company LP

Inventor： Vivek Rohatgi ,  Jeffrey F. Greco ,  Yongwoo Inn ,  Qing Yang ,  Alfred E. Brown, JR.

IPC: C08F210/16

CPC classification number: C08F210/16 ,  C08F10/08 ,  C08F10/14 ,  C08F2500/05 ,  C08F2500/07 ,  C08F2500/12 ,  C08F4/65927 ,  C08F4/65904 ,  C08F4/65925 ,  C08F210/14 ,  C08F2500/17 ,  C08F2500/13

Abstract: Disclosed herein are ethylene-based polymers having a higher molecular weight component and a lower molecular weight component, and characterized by a density greater than 0.945 g/cm3, a melt index less than 1.5 g/10 min, and a ratio of high load melt index to melt index ranging from 40 to 175. These polymers have the processability of chromium-based resins, but with improved stiffness and stress crack resistance, and can be used in blow molding and other end-use applications.

Abstract translation: 本文公开了具有较高分子量组分和较低分子量组分的乙烯基聚合物，其特征在于密度大于0.945g / cm 3，熔体指数小于1.5g / 10min，高负载熔体 熔体指数指数范围从40至175.这些聚合物具有铬基树脂的加工性，但具有改善的刚度和抗应力开裂性，并且可用于吹塑和其它终端应用。

公开(公告)号：US10017617B2

公开(公告)日：2018-07-10

申请号：US15643527

申请日：2017-07-07

Applicant: Chevron Phillips Chemical Company LP

Inventor： Lili Cui ,  Ashish M. Sukhadia ,  Vivek Rohatgi

IPC: C08J5/18 ,  C08F210/16 ,  B29C47/00 ,  C08F10/02 ,  B29C49/00 ,  B29C39/00 ,  B29C47/40 ,  B29C47/38 ,  C08F8/00 ,  C08K5/14 ,  B29L7/00 ,  B29K105/00 ,  B29K23/00

Abstract: Disclosed herein are ethylene-based polymers having low densities and narrow molecular weight distributions, but high melt strengths for blown film processing. Such polymers can be produced by peroxide-treating a metallocene-catalyzed resin.

公开(公告)号：US20180044454A1

公开(公告)日：2018-02-15

申请号：US15792271

申请日：2017-10-24

Applicant: Chevron Phillips Chemical Company LP

Inventor： Vivek Rohatgi ,  Yongwoo Inn ,  Ashish M. Sukhadia ,  Qing Yang ,  Paul J. DesLauriers

IPC: C08F210/16 ,  C08L23/08 ,  C08F4/659 ,  C08F4/6592

CPC classification number: C08F210/16 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65925 ,  C08F4/65927 ,  C08L23/0815 ,  C08L2203/18 ,  C08L2205/025 ,  C08L2312/00 ,  C08F4/65904 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/17

Abstract: A crosslinked metallocene-catalyzed polyethylene copolymer having a higher molecular weight (HMW) component and lower molecular weight (LMW) component wherein the HMW component is present in an amount of from about 10 wt. % to about 30 wt. % and wherein the LMW component is present in an amount of from about 70 wt. % to about 90 wt. %.

公开(公告)号：US20170306114A1

公开(公告)日：2017-10-26

申请号：US15643527

申请日：2017-07-07

Applicant: Chevron Phillips Chemical Company LP

Inventor： Lili Cui ,  Ashish M. Sukhadia ,  Vivek Rohatgi

IPC: C08J5/18 ,  B29C47/00 ,  B29C47/38 ,  C08F210/16 ,  B29C49/00 ,  B29C39/00 ,  C08K5/14 ,  C08F8/00 ,  C08F10/02 ,  B29C47/40 ,  B29K23/00 ,  B29K105/00 ,  B29L7/00

CPC classification number: C08J5/18 ,  B29C39/003 ,  B29C47/0004 ,  B29C47/0021 ,  B29C47/0026 ,  B29C47/0057 ,  B29C47/385 ,  B29C47/40 ,  B29C49/0005 ,  B29K2023/0625 ,  B29K2023/0658 ,  B29K2023/08 ,  B29K2105/0085 ,  B29K2105/0094 ,  B29K2995/0088 ,  B29L2007/008 ,  C08F8/00 ,  C08F10/02 ,  C08F210/16 ,  C08F2810/10 ,  C08J2323/04 ,  C08J2323/06 ,  C08J2323/08 ,  C08J2323/26 ,  C08K5/14 ,  C08F210/14 ,  C08F2500/03 ,  C08F2500/08 ,  C08F2500/09 ,  C08F2500/17 ,  C08F2500/26 ,  C08L23/0815

Abstract: Disclosed herein are ethylene-based polymers having low densities and narrow molecular weight distributions, but high melt strengths for blown film processing. Such polymers can be produced by peroxide-treating a metallocene-catalyzed resin.

公开(公告)号：US09650459B2

公开(公告)日：2017-05-16

申请号：US14848405

申请日：2015-09-09

Applicant: Chevron Phillips Chemical Company LP

Inventor： Jeff F Greco ,  Qing Yang ,  Vivek Rohatgi ,  Mark L. Hlavinka ,  Jim B Askew

IPC: C08F4/653 ,  C08F4/6592 ,  C08F210/02 ,  C08F210/14 ,  C08F4/659 ,  C08F210/16

CPC classification number: C08F210/14 ,  C08F4/65904 ,  C08F4/65916 ,  C08F210/02 ,  C08F210/16 ,  C08F4/65927 ,  C08F4/65925 ,  C08F210/10 ,  C08F2500/14 ,  C08F2500/05

Abstract: Methods for controlling the die swell of an olefin polymer produced using a dual catalyst system are disclosed. The die swell of the olefin polymer can be increased or decreased as a function of the catalyst weight ratio and the reactant molar ratio used during the olefin polymerization process.

公开(公告)号：US20150337057A1

公开(公告)日：2015-11-26

申请号：US14282086

申请日：2014-05-20

Applicant: Chevron Phillips Chemical Company LP

Inventor： Bruce E. Kreischer ,  Paul J. DesLauriers ,  Ronald D. Knudsen ,  Vivek Rohatgi ,  Mark E. Lashier ,  R. Kim Perry ,  Chung Ching Tso

IPC: C08F6/12 ,  C08F6/10

CPC classification number: C08L23/06 ,  C08F2/34 ,  C08L2205/025 ,  C08L2207/32

Abstract: Disclosed herein are methods for recovering a by-product stream of an ethylene oligomerization process, and systematically processing this stream in order to form a polymer composition that can be pelletized conventionally. This polymer composition can have a bimodal molecular weight distribution, which can be characterized by a ratio of the respective peak molecular weights ranging from 400:1 to 2000:1, and further, a liquid component of the polymer composition is in a range from 1 to 35 weight percent.

Abstract translation: 本文公开了用于回收乙烯低聚方法的副产物流的方法，并系统地处理该物流以形成可以常规成粒的聚合物组合物。 该聚合物组合物可以具有双峰分子量分布，其特征在于各峰分子量的比例为400:1至2000:1，此外，聚合物组合物的液体组分的范围为1 至35重量％。

公开(公告)号：US09169337B2

公开(公告)日：2015-10-27

申请号：US14205461

申请日：2014-03-12

Applicant: Chevron Phillips Chemical Company LP

Inventor： Vivek Rohatgi ,  Jeffrey F. Greco ,  Yongwoo Inn ,  Qing Yang ,  Alfred E. Brown, Jr.

IPC: C08F210/16 ,  C08F210/02 ,  C08F10/14 ,  C08F10/08

CPC classification number: C08F210/16 ,  C08F10/08 ,  C08F10/14 ,  C08F2500/05 ,  C08F2500/07 ,  C08F2500/12 ,  C08F4/65927 ,  C08F4/65904 ,  C08F4/65925 ,  C08F210/14 ,  C08F2500/17 ,  C08F2500/13

Abstract: Disclosed herein are ethylene-based polymers having a higher molecular weight component and a lower molecular weight component, and characterized by a density greater than 0.945 g/cm3, a melt index less than 1.5 g/10 min, and a ratio of high load melt index to melt index ranging from 40 to 175. These polymers have the processability of chromium-based resins, but with improved stiffness and stress crack resistance, and can be used in blow molding and other end-use applications.

Abstract translation: 本文公开了具有较高分子量组分和较低分子量组分的乙烯基聚合物，其特征在于密度大于0.945g / cm 3，熔体指数小于1.5g / 10min，高负载熔体 熔体指数指数范围从40至175.这些聚合物具有铬基树脂的加工性，但具有改善的刚度和抗应力开裂性，并且可用于吹塑和其它终端应用。

公开(公告)号：US09994659B2

公开(公告)日：2018-06-12

申请号：US15792271

申请日：2017-10-24

Applicant: Chevron Phillips Chemical Company LP

Inventor： Vivek Rohatgi ,  Yongwoo Inn ,  Ashish M. Sukhadia ,  Qing Yang ,  Paul J. DesLauriers

IPC: C08F210/16 ,  C08L23/08 ,  C08F4/65 ,  C08F4/6592 ,  C08F4/659

CPC classification number: C08F210/16 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65925 ,  C08F4/65927 ,  C08L23/0815 ,  C08L2203/18 ,  C08L2205/025 ,  C08L2312/00 ,  C08F4/65904 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/17

Abstract: A crosslinked metallocene-catalyzed polyethylene copolymer having a higher molecular weight (HMW) component and lower molecular weight (LMW) component wherein the HMW component is present in an amount of from about 10 wt. % to about 30 wt. % and wherein the LMW component is present in an amount of from about 70 wt. % to about 90 wt. %.