公开(公告)号：US11578156B2

公开(公告)日：2023-02-14

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: C08L23/08 ,  C08F210/16 ,  C08F4/653 ,  C08F4/6592 ,  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：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：US20220275183A1

公开(公告)日：2022-09-01

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: C08L23/08 ,  C08F4/6592 ,  C08F210/16 ,  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：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：US20170066918A1

公开(公告)日：2017-03-09

申请号：US14844039

申请日：2015-09-03

Applicant: Chevron Phillips Chemical Company LP

Inventor： Jinping Joe Zhou ,  Jay M. Chaffin ,  Charlie Rees

IPC: C08L53/02

CPC classification number: C08L53/02 ,  C08L53/00 ,  C08L2205/025 ,  C08L2205/03 ,  C08L2207/04 ,  F16L11/04

Abstract: Polymer compositions containing conjugated diene monovinylarene block copolymers and styrenic thermoplastic elastomers are disclosed. These compositions can be used to produce tubing having superior kink resistance properties, and can be a replacement for flexible PVC in various end-use applications, such as in sheet products, film products, tubing products, and adhesive products.

Abstract translation: 公开了含有共轭二烯单乙烯基芳烃嵌段共聚物和苯乙烯类热塑性弹性体的聚合物组合物。 这些组合物可用于生产具有优异的耐扭结性的管材，并且可以替代各种最终用途应用中的柔性PVC，例如片材产品，薄膜产品，管材产品和粘合剂产品。