公开(公告)号：US20240301185A1

公开(公告)日：2024-09-12

申请号：US18663194

申请日：2024-05-14

Applicant: Chevron Phillips Chemical Company LP

Inventor： Errun Ding ,  Chung Ching Tso ,  Max P. McDaniel ,  Ashish M. Sukhadia ,  Youlu Yu ,  Randall S. Muninger ,  Aaron M. Osborn ,  Christopher E. Wittner

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

CPC classification number: C08L23/0815 ,  C08F4/65925 ,  C08F4/65927 ,  C08F210/16 ,  C08L2203/16 ,  C08L2207/066

Abstract: Disclosed herein are ethylene-based polymers generally characterized by a melt index of less than 15 g/10 min, a density from 0.91 to 0.945 g/cm3, a CY-a parameter at 190° C. from 0.2 to 0.6, an average number of long chain branches per 1,000,000 total carbon atoms of the polymer in a molecular weight range of 500,000 to 2,000,000 g/mol of less than 5, and a maximum ratio of ηΕ/3η at an extensional rate of 0.03 sec−1 in a range from 3 to 15. The ethylene polymers have substantially no long chain branching in the high molecular weight fraction of the polymer, but instead have significant long chain branching in the lower molecular weight fraction, such that polymer melt strength and bubble stability are maintained for the fabrication of blown films and other articles of manufacture. These ethylene polymers can be produced using a dual catalyst system containing a single atom bridged metallocene compound with an indenyl group and a cyclopentadienyl group, and an unbridged hafnium metallocene compound with two cyclopentadienyl groups.

公开(公告)号：US11814455B2

公开(公告)日：2023-11-14

申请号：US17935612

申请日：2022-09-27

Applicant: Chevron Phillips Chemical Company LP

Inventor： Carlos A. Cruz ,  Yongwoo Inn ,  John R. Rathman ,  Youlu Yu ,  Ashish M. Sukhadia ,  Jay M. Chaffin

IPC: C08F210/02 ,  C08F210/16 ,  C08K5/14 ,  C08F10/02

CPC classification number: C08F210/02 ,  C08K5/14 ,  C08F10/02 ,  C08F210/16 ,  C08F10/02 ,  C08F2810/10

Abstract: Ethylene-based polymers are generally characterized by a high load melt index of less than 12 g/10 min, a weight-average molecular weight from 200,000 to 550,000 g/mol, a number-average molecular weight from 18,000 to 48,000 g/mol, a CY-a parameter of less than 0.12, a tan δ at 0.1 sec−1 from 0.5 to 0.9 degrees, a tan δ at 100 sec−1 from 0.5 to 0.75 degrees, and a viscosity at 0.001 sec−1 from 1.3×106 to 1×107 Pa-sec. These ethylene polymers can be produced by peroxide-treating a bimodal molecular weight distribution dual metallocene-catalyzed resin, and can be used to produce blow molded bottles and other blow molded products.

公开(公告)号：US20220289880A1

公开(公告)日：2022-09-15

申请号：US17200976

申请日：2021-03-15

Applicant: Chevron Phillips Chemical Company LP

Inventor： Carlos A. Cruz ,  Yongwoo Inn ,  John R. Rathman ,  Youlu Yu ,  Ashish M. Sukhadia ,  Jay M. Chaffin

IPC: C08F210/02 ,  C08K5/14

Abstract: Ethylene-based polymers are generally characterized by a high load melt index of less than 12 g/10 min, a weight-average molecular weight from 200,000 to 550,000 g/mol, a number-average molecular weight from 18,000 to 48,000 g/mol, a CY-a parameter of less than 0.12, a tan δ at 0.1 sec−1 from 0.5 to 0.9 degrees, a tan δ at 100 sec−1 from 0.5 to 0.75 degrees, and a viscosity at 0.001 sec−1 from 1.3×106 to 1×107 Pa-sec. These ethylene polymers can be produced by peroxide-treating a bimodal molecular weight distribution dual metallocene-catalyzed resin, and can be used to produce blow molded bottles and other blow molded products.

公开(公告)号：US20210309841A1

公开(公告)日：2021-10-07

申请号：US16837009

申请日：2020-04-01

Applicant: Chevron Phillips Chemical Company LP

Inventor： Errun Ding ,  Chung Ching Tso ,  Max P. McDaniel ,  Ashish M. Sukhadia ,  Youlu Yu ,  Randall S. Muninger ,  Aaron M. Osborn ,  Christopher E. Wittner

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

Abstract: Disclosed herein are ethylene-based polymers generally characterized by a melt index of less than 15 g/10 min, a density from 0.91 to 0.945 g/cm3, a CY-a parameter at 190° C. from 0.2 to 0.6, an average number of long chain branches per 1,000,000 total carbon atoms of the polymer in a molecular weight range of 500,000 to 2,000,000 g/mol of less than 5, and a maximum ratio of ηE/3η at an extensional rate of 0.03 sec−1 in a range from 3 to 15. The ethylene polymers have substantially no long chain branching in the high molecular weight fraction of the polymer, but instead have significant long chain branching in the lower molecular weight fraction, such that polymer melt strength and bubble stability are maintained for the fabrication of blown films and other articles of manufacture. These ethylene polymers can be produced using a dual catalyst system containing a single atom bridged metallocene compound with an indenyl group and a cyclopentadienyl group, and an unbridged hafnium metallocene compound with two cyclopentadienyl groups.

公开(公告)号：US20190092912A1

公开(公告)日：2019-03-28

申请号：US15715215

申请日：2017-09-26

Applicant: Chevron Phillips Chemical Company LP

Inventor： Jeremy M. Praetorius ,  Chung C. Tso ,  Qing Yang ,  Yongwoo Inn ,  John T. Blagg ,  Ashish M. Sukhadia

IPC: C08J5/18

Abstract: Disclosed are ethylene polymer compositions containing a homogeneously-branched first ethylene polymer component and a homogeneously-branched second ethylene polymer component of higher density than the first ethylene polymer component. The ethylene polymer composition can be characterized by a density from 0.912 to 0.925 g/cm3, a melt index less than 3.5 g/10 min, and a CY-a parameter at 190° C. from 0.25 to 0.65. These polymer compositions have the excellent dart impact strength and optical properties of a metallocene-catalyzed LLDPE, but with improved machine direction tear resistance, and can be used in blown film and other end-use applications.

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. %.

公开(公告)号：US09732197B2

公开(公告)日：2017-08-15

申请号：US15134464

申请日：2016-04-21

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 ,  B29C47/00 ,  B29C47/38 ,  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：US20160229967A1

公开(公告)日：2016-08-11

申请号：US15134464

申请日：2016-04-21

Applicant: Chevron Phillips Chemical Company LP

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

IPC: C08J5/18 ,  B29C47/38 ,  B29C47/40 ,  B29C47/00

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：US20160115264A1

公开(公告)日：2016-04-28

申请号：US14522991

申请日：2014-10-24

Applicant: Chevron Phillips Chemical Company LP

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

IPC: C08F210/16

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. %.

Abstract translation: 具有较高分子量（HMW）组分和较低分子量（LMW）组分的交联金属茂催化的聚乙烯共聚物，其中HMW组分的存在量为约10wt。 ％至约30wt。 ％，并且其中LMW组分以约70重量％的量存在。 ％至约90wt。 ％。

公开(公告)号：US20140342141A1

公开(公告)日：2014-11-20

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 ,  B29C49/00 ,  C08J5/18 ,  B29C39/00

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。