公开(公告)号：US20190322823A1

公开(公告)日：2019-10-24

申请号：US16459656

申请日：2019-07-02

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 ,  C08L23/08

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：US20190263943A1

公开(公告)日：2019-08-29

申请号：US15908033

申请日：2018-02-28

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：US10358506B2

公开(公告)日：2019-07-23

申请号：US15723225

申请日：2017-10-03

Applicant: Chevron Phillips Chemical Company LP

Inventor： Errun Ding ,  Chung C. Tso ,  Randall S. Muninger ,  Qing Yang ,  Youlu Yu ,  Yongwoo Inn

IPC: C08F4/653 ,  C08F4/6592 ,  C08F210/16 ,  C08L23/08 ,  C08F4/6192 ,  C08F4/64 ,  C08F10/02 ,  C08F4/659

Abstract: Disclosed herein are ethylene-based polymers generally characterized by a density from 0.89 to 0.93 g/cm3, a ratio of Mw/Mn from 3 to 6.5, a Mz from 200,000 to 650,000 g/mol, a CY-a parameter at 190° C. from 0.2 to 0.4, and a reverse short chain branching distribution. The ATREF profile of these polymers can have a high temperature peak from 92 to 102° C., and a low temperature peak from 18 to 36° C. less than that of the high temperature peak. These polymers can have comparable physical properties to that of a metallocene-catalyzed LLDPE, but with improved processability, shear thinning, and melt strength, and can be used in blown film and other end-use applications.

公开(公告)号：US10000594B2

公开(公告)日：2018-06-19

申请号：US15345586

申请日：2016-11-08

Applicant: Chevron Phillips Chemical Company LP

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

IPC: C08F210/16 ,  C08F4/654 ,  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：US09791358B2

公开(公告)日：2017-10-17

申请号：US15471414

申请日：2017-03-28

Applicant: Chevron Phillips Chemical Company LP

Inventor： Youlu Yu ,  Qing Yang ,  Paul J. Deslauriers ,  Mark J. Lamborn ,  Yongwoo Inn

IPC: G01N5/00 ,  C08F110/02 ,  C08J5/18 ,  C08L23/06 ,  G01N11/00 ,  G01N33/44 ,  C08J5/00 ,  G01N11/06

CPC classification number: G01N5/00 ,  C08F110/02 ,  C08J5/18 ,  C08J2323/06 ,  C08J2323/08 ,  C08L23/06 ,  G01N11/00 ,  G01N11/06 ,  G01N33/442

Abstract: A method of preparing a polymer article comprising determining a zero-shear viscosity for a polymer sample; sieving the polymer sample to produce a plurality of sieved polymer samples; determining a molecular weight distribution for each of the plurality of sieved polymer samples; determining a zero-shear viscosity for each of the plurality of sieved polymer samples; determining a compositional diversity of each of the plurality of sieved polymer samples based on a ratio of the zero shear viscosity for each of the plurality of sieved polymer samples to the zero shear viscosity for the polymer sample; identifying a polymer sample having a ratio of the zero shear viscosity to zero shear viscosity for the polymer sample of from about 0.5 to equal to or greater than about 3; and preparing a polymer article from the identified polymer sample.

公开(公告)号：US20160304644A1

公开(公告)日：2016-10-20

申请号：US15193195

申请日：2016-06-27

Applicant: Chevron Phillips Chemical Company LP

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

IPC: C08F210/16

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.

公开(公告)号：US09371407B2

公开(公告)日：2016-06-21

申请号：US14870361

申请日：2015-09-30

Applicant: Chevron Phillips Chemical Company LP

Inventor： Qing Yang ,  Max P. McDaniel ,  Tony R. Crain ,  Youlu Yu ,  Yongwoo Inn

IPC: C08F4/653 ,  C08F4/6592 ,  C08L23/00 ,  C08F110/02 ,  C08L23/08 ,  C08F4/659 ,  C08F210/00 ,  C08F210/16

CPC classification number: C08F110/02 ,  C08F4/65904 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/6592 ,  C08F4/65925 ,  C08F4/65927 ,  C08F210/00 ,  C08F210/16 ,  C08L23/00 ,  C08L23/0815 ,  C08L2314/06 ,  Y10S526/943 ,  C08F2500/04 ,  C08F2500/12 ,  C08F2500/24 ,  C08F2500/05 ,  C08F210/14 ,  C08L23/06

Abstract: Disclosed herein are polymerization processes for the production of olefin polymers. These polymerization processes use a catalyst system containing three metallocene components, often resulting in polymers having a reverse comonomer distribution and a broad and non-bimodal molecular weight distribution.

公开(公告)号：US09273170B2

公开(公告)日：2016-03-01

申请号：US14205422

申请日：2014-03-12

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

CPC classification number: C08F210/16 ,  C08F4/65904 ,  C08F4/65916 ,  C08L23/0815 ,  C08F210/14 ,  C08F2500/07 ,  C08F2500/17 ,  C08F2500/12 ,  C08F2500/13 ,  C08F2500/05 ,  C08F4/65927 ,  C08F4/65925

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.

Abstract translation: 本文公开了具有密度大于0.945g / cm 3，高负荷熔融指数小于25g / 10min，峰值分子量为52,000至132,000g / mol的乙烯基聚合物和环境应力开裂抗性 至少250小时。 这些聚合物具有铬基树脂的加工性，但具有改善的冲击强度和抗应力开裂性，并且可用于大部分吹塑应用。

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：US20150005460A1

公开(公告)日：2015-01-01

申请号：US14485897

申请日：2014-09-15

Applicant: Chevron Phillips Chemical Company LP

Inventor： Qing Yang ,  Max P. McDaniel ,  Tony R. Crain ,  Youlu Yu ,  Yongwoo Inn

IPC: C08F210/16

CPC classification number: C08F110/02 ,  C08F4/65904 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/6592 ,  C08F4/65925 ,  C08F4/65927 ,  C08F210/00 ,  C08F210/16 ,  C08L23/00 ,  C08L23/0815 ,  C08L2314/06 ,  Y10S526/943 ,  C08F2500/04 ,  C08F2500/12 ,  C08F2500/24 ,  C08F2500/05 ,  C08F210/14 ,  C08L23/06

Abstract: Disclosed herein are polymerization processes for the production of olefin polymers. These polymerization processes use a catalyst system containing three metallocene components, often resulting in polymers having a reverse comonomer distribution and a broad and non-bimodal molecular weight distribution.

Abstract translation: 本文公开了用于生产烯烃聚合物的聚合方法。 这些聚合方法使用含有三种茂金属组分的催化剂体系，其常常导致聚合物具有反向共聚单体分布和广泛的和非双峰分子量分布。