公开(公告)号：US12234348B2

公开(公告)日：2025-02-25

申请号：US17745962

申请日：2022-05-17

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 ,  C08F4/6592 ,  C08K3/08 ,  C08L23/0807

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：US11505630B2

公开(公告)日：2022-11-22

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: C08F10/02 ,  C08F210/16 ,  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：US20220119562A1

公开(公告)日：2022-04-21

申请号：US17074784

申请日：2020-10-20

Applicant: Chevron Phillips Chemical Company LP

Inventor： Jeremy M. Praetorius ,  Yongwoo Inn ,  Alfred E. Brown, JR. ,  Brandy Rutledge-Ryal ,  Carlos A. Cruz ,  Jay M. Chaffin

IPC: C08F210/02

Abstract: Ethylene-based polymers having a density of 0.952 to 0.968 g/cm3, a ratio of HLMI/MI from 185 to 550, an IB parameter from 1.46 to 1.80, a tan δ at 0.1 sec−1 from 1.05 to 1.75 degrees, and a slope of a plot of viscosity versus shear rate at 100 sec−1 from 0.18 to 0.28 are described, with low melt flow versions having a HLMI from 10 to 30 g/10 min and a Mw from 250,000 to 450,000 g/mol, and high melt flow versions having a HLMI from 30 to 55 g/10 min and a Mw from 200,000 to 300,000 g/mol. These polymers have the processability of chromium-based resins, but with improved stress crack resistance and topload strength for bottles and other blow molded products.

公开(公告)号：US11225538B2

公开(公告)日：2022-01-18

申请号：US16774061

申请日：2020-01-28

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：US11028258B2

公开(公告)日：2021-06-08

申请号：US16543686

申请日：2019-08-19

Applicant: Chevron Phillips Chemical Company LP

Inventor： Chung Ching Tso ,  Errun Ding ,  Randall S. Muninger ,  John T. Blagg ,  Yongwoo Inn ,  Max P. McDaniel ,  Ashish M. Sukhadia ,  Sarah Eppinger

IPC: C08L23/16 ,  C08F210/16 ,  C08L23/06 ,  C08F4/6592

Abstract: Ethylene polymers having a density from 0.908 to 0.925 g/cm3, a melt index from 0.5 to 3 g/10 min, a ratio of Mw/Mn from 2 to 4, a ratio of Mz/Mw from 1.6 to 2.3, a CY-a parameter from 0.45 to 0.6, and an ATREF profile characterized by a single peak at a peak ATREF temperature from 76 to 88° C., and by less than 4.5 wt. % of the polymer eluting above a temperature of 91° C. These ethylene polymers can be used to produce various articles of manufacture, such as blown and cast films with a beneficial combination of high tear resistance and low haze.

公开(公告)号：US10544236B2

公开(公告)日：2020-01-28

申请号：US16377358

申请日：2019-04-08

Applicant: Chevron Phillips Chemical Company LP

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

IPC: C08F4/6592 ,  C08F4/653 ,  C08F210/16 ,  C08F4/6192 ,  C08F4/64 ,  C08F10/02 ,  C08L23/08 ,  C08F4/659 ,  C08J5/18

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：US10435527B2

公开(公告)日：2019-10-08

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 ,  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：US20180127526A1

公开(公告)日：2018-05-10

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 ,  C08J9/228

CPC classification number: C08F210/16 ,  C08F4/65904 ,  C08F2500/02 ,  C08F2500/04 ,  C08F2500/12 ,  C08F2500/17 ,  C08F2500/18 ,  C08F2500/26 ,  C08J9/228 ,  C08J2201/03 ,  C08J2323/08 ,  C08F210/14 ,  C08F2500/03

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：US09645066B1

公开(公告)日：2017-05-09

申请号：US14960047

申请日：2015-12-04

Applicant: Chevron Phillips Chemical Company LP

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

IPC: G01N11/04 ,  G01N5/00 ,  C08F110/02 ,  B29B13/10

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：US09475898B2

公开(公告)日：2016-10-25

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 ,  C08F4/64 ,  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.