公开(公告)号：US11377541B2

公开(公告)日：2022-07-05

申请号：US16522788

申请日：2019-07-26

Applicant: Chevron Phillips Chemical Company LP

Inventor： Carlos A. Cruz ,  Yongwoo Inn ,  Justin Lumbley ,  Brandy Rutledge-Ryal ,  John R. Rathman ,  Jennifer L. Hicks ,  Jay M. Chaffin

IPC: C08F210/16 ,  C08F4/659 ,  C08L23/08 ,  C08F4/6592 ,  C08K3/08

Abstract: Ethylene-based polymers having a density of 0.952 to 0.965 g/cm3, a high load melt index (HLMI) from 5 to 25 g/10 min, a weight-average molecular weight from 275,000 to 450,000 g/mol, a number-average molecular weight from 15,000 to 40,000 g/mol, a viscosity at HLMI from 1400 to 4000 Pa-sec, and a tangent delta at 0.1 sec−1 from 0.65 to 0.98 degrees. These polymers have the processability of chromium-based resins, but with improved stress crack resistance, and can be used in large-part blow molding applications.

公开(公告)号：US20210277153A1

公开(公告)日：2021-09-09

申请号：US17320401

申请日：2021-05-14

Applicant: Chevron Phillips Chemical Company LP

Inventor： Youlu Yu ,  Paul J. DesLauriers ,  Yongwoo Inn

IPC: C08F10/02 ,  B01J19/00 ,  B01J19/24

Abstract: A method of determining multimodal polyethylene quality comprising the steps of (a) providing a multimodal polyethylene resin sample; (b) determining, in any sequence, the following: that the multimodal polyethylene resin sample has a melt index within 30% of a target melt index; that the multimodal polyethylene resin sample has a density within 2.5% of a target density; that the multimodal polyethylene resin sample has a dynamic viscosity deviation (% MVD) from a target dynamic viscosity of less than about 100%; that the multimodal polyethylene resin sample has a weight average molecular weight (Mw) deviation (% MwD) from a target Mw of less than about 20%; and that the multimodal polyethylene resin sample has a gel permeation chromatography (GPC) curve profile deviation (% GPCD) from a target GPC curve profile of less than about 15%; and (c) responsive to step (b), designating the multimodal polyethylene resin sample as a high quality resin.

公开(公告)号：US11059921B2

公开(公告)日：2021-07-13

申请号：US16545039

申请日：2019-08-20

Applicant: Chevron Phillips Chemical Company LP

Inventor： Mark L. Hlavinka ,  Chung Ching Tso ,  Yongwoo Inn ,  Deloris R. Gagan ,  Randy S. Muninger

IPC: C08L23/08 ,  C08F210/16 ,  C08F4/6592 ,  C08F4/653 ,  C08J9/228 ,  C08F4/659

Abstract: Disclosed herein are ethylene-based polymers generally characterized by a Mw ranging from 70,000 to 200,000 g/mol, a ratio of Mz/Mw ranging from 1.8 to 20, an IB parameter ranging from 0.92 to 1.05, and an ATREF profile characterized by one large peak. These polymers have the dart impact, tear strength, and optical properties of a metallocene-catalyzed LLDPE, but with improved processability, melt strength, and bubble stability, and can be used in blown film and other end-use applications.

公开(公告)号：US10442881B2

公开(公告)日：2019-10-15

申请号：US15973610

申请日：2018-05-08

Applicant: Chevron Phillips Chemical Company LP

Inventor： Mark L. Hlavinka ,  Chung Ching Tso ,  Yongwoo Inn ,  Deloris R. Gagan ,  Randy S. Muninger

IPC: C08F210/16 ,  C08F4/6592 ,  C08L23/08 ,  C08J9/228 ,  C08F4/659

Abstract: Disclosed herein are ethylene-based polymers generally characterized by a Mw ranging from 70,000 to 200,000 g/mol, a ratio of Mz/Mw ranging from 1.8 to 20, an 1B parameter ranging from 0.92 to 1.05, and an ATREF profile characterized by one large peak. These polymers have the dart impact, tear strength, and optical properties of a metallocene-catalyzed LLDPE, but with improved processability, melt strength, and bubble stability, and can be used in blown film and other end-use applications.

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：US10184018B2

公开(公告)日：2019-01-22

申请号：US15379571

申请日：2016-12-15

Applicant: Chevron Phillips Chemical Company LP

Inventor： Mark L. Hlavinka ,  Qing Yang ,  Yongwoo Inn ,  William M. Whitte ,  John R. Rathman ,  Steven J. Secora ,  Daniel G. Hert

IPC: C08F210/16 ,  C08F4/6592 ,  C08F4/653 ,  C08L23/08 ,  C08F4/659

Abstract: Disclosed herein are ethylene-based polymers having a density greater than 0.945 g/cm3, a high load melt index less than 25 g/10 min, a peak molecular weight ranging from 52,000 to 132,000 g/mol, and an environmental stress crack resistance of at least 250 hours. These polymers have the processability of chromium-based resins, but with improved impact strength and stress crack resistance, and can be used in large-part blow molding 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：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：US09156970B2

公开(公告)日：2015-10-13

申请号：US14018455

申请日：2013-09-05

Applicant: Chevron Phillips Chemical Company LP

Inventor： Mark L. Hlavinka ,  Errun Ding ,  Paul DesLauriers ,  Yongwoo Inn ,  Lili Cui ,  Qing Yang ,  Ashish Sukhadia ,  Guylaine St. Jean ,  Richard M. Buck

IPC: C08L23/08 ,  C08F210/16 ,  C08F4/653 ,  C08F4/6592 ,  C08F4/659 ,  C08F210/02

CPC classification number: C08F210/16 ,  C08F4/65904 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/6592 ,  C08F4/65922 ,  C08F4/65925 ,  C08F4/65927 ,  C08F4/69 ,  C08F210/02 ,  C08J5/00 ,  C08J2323/08 ,  C08L23/0815 ,  C08F210/14 ,  C08F2500/04 ,  C08F2500/08 ,  C08F2500/12

Abstract: Disclosed herein are polymerization processes for the production of olefin polymers. These polymerization processes can employ a catalyst system containing two or three metallocene components, resulting in ethylene-based copolymers that can have a medium density and improved stress crack resistance.

Abstract translation: 本文公开了用于生产烯烃聚合物的聚合方法。 这些聚合方法可以使用含有两种或三种茂金属组分的催化剂体系，产生可具有中等密度和改善的抗应力开裂性的乙烯基共聚物。

公开(公告)号：US08815357B1

公开(公告)日：2014-08-26

申请号：US13778693

申请日：2013-02-27

Applicant: Chevron Phillips Chemical Company LP

Inventor： Yongwoo Inn ,  Qing Yang

IPC: B29D22/00 ,  C08F10/00 ,  C08F10/02 ,  B32B1/08

CPC classification number: C08F210/16 ,  B32B1/08 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65925 ,  C08F4/65927 ,  C08F2410/04 ,  C08L23/04 ,  Y10T428/1352 ,  Y10T428/139 ,  C08F210/14 ,  C08F2500/01 ,  C08F2500/02 ,  C08F2500/04 ,  C08F2500/05 ,  C08F2500/09 ,  C08F2500/10 ,  C08F2500/11 ,  C08F2500/12 ,  C08F2500/17 ,  C08F2500/26 ,  C08F10/00 ,  C08F4/65904

Abstract: A metallocene-catalyzed polymer comprising (i) a higher molecular weight component and (ii) a lower molecular weight component wherein the polymer has a polydispersity index of from about 10 to about 26; a zero shear viscosity of from about 5×105 Pa·s to about 2×1014 Pa·s and a smooth-to-matte transition critical stress of from about 20 kPa to about 85 kPa at a shear rate of from about 1.5 s−1 to about 17 s−1. A dual metallocene catalyzed polyethylene comprising (i) a higher molecular weight component and (ii) a lower molecular weight component wherein the polymer has a polydispersity index of from about 10 to about 26; a zero shear viscosity of from about 5×105 Pa·s to about 2×1014 Pa·s and a smooth-to-matte transition stress of from about 20 kPa to about 85 kPa at a shear rate of from about 1.5 s−1 to about 17 s−1.

Abstract translation: 茂金属催化的聚合物，其包含（i）较高分子量组分和（ii）较低分子量组分，其中所述聚合物具有约10至约26的多分散指数; 在约5×10 5 Pa·s至约2×10 14 Pa·s的剪切粘度为零，剪切速率为约1.5s-的剪切粘度为约20kPa至约85kPa的平滑过渡临界应力， 1至约17s-1。 双茂金属催化聚乙烯，其包含（i）较高分子量组分和（ii）较低分子量组分，其中所述聚合物具有约10至约26的多分散指数; 约剪切粘度为约5×10 5 Pa·s至约2×10 14 Pa·s，剪切速率为约1.5s -1的平滑至无光泽的过渡应力为约20kPa至约85kPa 至约17s-1。