公开(公告)号：US20230151125A1

公开(公告)日：2023-05-18

申请号：US17995860

申请日：2021-04-22

Applicant: Dow Global Technologies LLC

Inventor： Linfeng Chen ,  Jesse C. Beilhart ,  Kurt F. Hirsekorn ,  David T. Gillespie ,  Ian M. Munro ,  Eduardo Garcia ,  Nori Williams ,  Mridula Kapur ,  Evelyn Auyeung

IPC: C08F4/649 ,  C08F4/654 ,  C08F210/00 ,  C08F110/00

CPC classification number: C08F4/6495 ,  C08F4/6543 ,  C08F210/00 ,  C08F110/00

Abstract: Ziegler-Natta (pro)catalyst systems made with an external electron donor compound, methods of synthesis of same, methods of olefin polymerization using same, and polyolefin polymers made thereby. The external electron donor compound is an azaheterocycle.

公开(公告)号：US20230151124A1

公开(公告)日：2023-05-18

申请号：US17995862

申请日：2021-04-22

Applicant: Dow Global Technologies LLC

Inventor： Linfeng Chen ,  Jesse C. Beilhart ,  David T. Gillespie ,  Mridula Kapur ,  Ian M. Munro ,  Eduardo Garcia ,  Nori Williams ,  Evelyn Auyeung ,  Kurt F. Hirsekorn

IPC: C08F4/646 ,  C08F4/651 ,  C08F210/00 ,  C08F110/00

CPC classification number: C08F4/6465 ,  C08F4/651 ,  C08F210/00 ,  C08F110/00

Abstract: Ziegler-Natta (pro)catalyst systems made with an external electron donor compound, methods of synthesis of same, methods of olefin polymerization using same, and polyolefin polymers made thereby. The external electron donor compound is a (multi-alkoxy)silane.

公开(公告)号：US20210221924A1

公开(公告)日：2021-07-22

申请号：US17056473

申请日：2019-05-29

Applicant: Dow Global Technologies LLC

Inventor： Linfeng Chen ,  Mingzhe Yu ,  Mehmet Demirors ,  Andrew T. Heitsch ,  Jeffrey A. Sims ,  David Gordon Barton ,  Kurt F. Hirsekorn ,  Peter N. Nickias

IPC: C08F4/655 ,  C08F4/685 ,  C08F2/06 ,  C08F10/02

Abstract: A heterogeneous procatalyst includes a preformed heterogeneous procatalyst and a metal-ligand complex. The preformed heterogeneous procatalyst includes a titanium species and a magnesium chloride (MgCl2) support. The metal-ligand complex has a structural formula (L)aM(Y)m(XR2)b, where M is a metal cation; each L is a neutral ligand or (═O); each Y is a halide or (C1-C20)alkyl; each XR2 is an anionic ligand in which X is a heteroatom or a heteroatom-containing functional group and R2 is (C1-C20)hydrocarbyl or (C1-C20) heterohydrocarbyl; n is 0, 1, or 2; m is 0-4; and b is 1-6. The metal-ligand complex is overall charge neutral. The heterogeneous procatalyst exhibits improved average molecular weight capability. A catalyst system includes the heterogeneous procatalyst and a cocatalyst. Processes for producing the heterogeneous procatalyst and processes for producing ethylene-based polymers utilizing the heterogeneous procatalyst are also disclosed.

公开(公告)号：US20210205785A1

公开(公告)日：2021-07-08

申请号：US17056534

申请日：2019-05-23

Applicant: Dow Global Technologies LLC

Inventor： Mingzhe Yu ,  David Gordon Barton ,  Kurt F. Hirsekorn ,  Sadeka Onam ,  Peter N. Nickias ,  Andrew T. Heitsch ,  Thomas H. Peterson

IPC: B01J21/06 ,  B01J35/10 ,  B01J31/14 ,  B01J20/04 ,  C08F2/06 ,  C08F4/657 ,  C08F4/02

Abstract: A heterogeneous procatalyst includes a titanium species, a magnesium chloride component, and a chlorinating agent having a structure A(C)x(R1)3-x, where A is aluminum or boron, R1 is a (C1-C30) hydrocarbyl, and x is 1, 2, or 3. The magnesium chloride component may be thermally treated at a temperature greater than 100 C for at least 30 minutes before or after introduction of the chlorinating agent and titanium species to the heterogeneous procatalyst. The heterogeneous procatalyst having the thermally treated magnesium chloride exhibits improved average molecular weight capability. Processes for producing the heterogeneous procatalyst and processes for producing ethylene-based polymers utilizing the heterogeneous procatalyst are also disclosed.