公开(公告)号：US10544273B2

公开(公告)日：2020-01-28

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: B32B7/02 ,  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：US20190100606A1

公开(公告)日：2019-04-04

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: C08F4/6192 ,  C08F4/64 ,  C08F10/02 ,  C08F210/16

CPC classification number: C08F4/6192 ,  C08F4/64 ,  C08F4/65904 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/6592 ,  C08F4/65927 ,  C08F10/02 ,  C08F210/16 ,  C08F2410/01 ,  C08F2420/04 ,  C08F2500/01 ,  C08J5/18 ,  C08J2323/08 ,  C08L23/0815 ,  C08L2207/068 ,  C08F210/14 ,  C08F2500/04 ,  C08F2500/08 ,  C08F2500/10 ,  C08F2500/12 ,  C08F2500/17 ,  C08F2500/26

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：US10927201B2

公开(公告)日：2021-02-23

申请号：US16554784

申请日：2019-08-29

Applicant: Chevron Phillips Chemical Company LP

Inventor： Errun Ding ,  Chung C. Tso ,  Youlu Yu ,  Qing Yang ,  Richard M. Buck

IPC: C08F210/02 ,  C08F210/16 ,  C08F4/659

Abstract: Catalyst systems having both a metallocene catalyst component and a Ziegler-Natta component are disclosed. Such catalyst systems can contain a metallocene compound, an activator-support, an organoaluminum compound, and a Ziegler-Natta component comprising titanium supported on magnesium chloride.

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：US20180162970A1

公开(公告)日：2018-06-14

申请号：US15890524

申请日：2018-02-07

Applicant: Chevron Phillips Chemical Company LP

Inventor： Errun Ding ,  Chung C. Tso ,  Youlu Yu ,  Qing Yang ,  Richard M. Buck

IPC: C08F210/02 ,  C08F210/16 ,  C08F4/659

CPC classification number: C08F210/02 ,  C08F4/65912 ,  C08F210/16 ,  C08F4/65904 ,  C08F4/6592 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/17 ,  C08F110/02

Abstract: Catalyst systems having both a metallocene catalyst component and a Ziegler-Natta component are disclosed. Such catalyst systems can contain a metallocene compound, an activator-support, an organoaluminum compound, and a Ziegler-Natta component comprising titanium supported on magnesium chloride.

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：US10435492B2

公开(公告)日：2019-10-08

申请号：US15890524

申请日：2018-02-07

Applicant: Chevron Phillips Chemical Company LP

Inventor： Errun Ding ,  Chung C. Tso ,  Youlu Yu ,  Qing Yang ,  Richard M. Buck

IPC: C08F210/02 ,  C08F210/16 ,  C08F4/659

Abstract: Catalyst systems having both a metallocene catalyst component and a Ziegler-Natta component are disclosed. Such catalyst systems can contain a metallocene compound, an activator-support, an organoaluminum compound, and a Ziegler-Natta component comprising titanium supported on magnesium chloride.

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：US09718907B2

公开(公告)日：2017-08-01

申请号：US15194622

申请日：2016-06-28

Applicant: Chevron Phillips Chemical Company LP

Inventor： Errun Ding ,  Chung C. Tso ,  Youlu Yu ,  Qing Yang ,  Richard M. Buck

IPC: C08F4/00 ,  C08F210/00 ,  C08F10/00 ,  C08F10/14 ,  C08F110/02 ,  C08F210/02 ,  C08F210/16 ,  C08F4/659

CPC classification number: C08F210/02 ,  C08F4/65912 ,  C08F210/16 ,  C08F4/65904 ,  C08F4/6592 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/17 ,  C08F110/02

Abstract: Catalyst systems having both a metallocene catalyst component and a Ziegler-Natta component are disclosed. Such catalyst systems can contain a metallocene compound, an activator-support, an organoaluminum compound, and a Ziegler-Natta component comprising titanium supported on magnesium chloride.

公开(公告)号：US11352471B2

公开(公告)日：2022-06-07

申请号：US16706949

申请日：2019-12-09

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.