公开(公告)号：US11912799B2

公开(公告)日：2024-02-27

申请号：US17280303

申请日：2019-09-27

Applicant: Dow Global Technologies LLC

Inventor： Robert D. J. Froese ,  Daniel J. Arriola ,  Teresita Kashyap ,  Bryan D. Stubbert

IPC: C08F210/18 ,  C08F210/16

CPC classification number: C08F210/16 ,  C08F210/18

Abstract: Ethylene-based polymers comprise reaction products of polymerizing ethylene monomer, at least one diene or polyene comonomer, and optionally at least one C3 to C14 comonomer under defined polymerization reaction conditions, the ethylene-based polymer having: an Mw/Mw0 greater than 1.20. The Mw0 is the initial weight-average molecular weight of a comparative ethylene-based polymer by gel permeation chromatography. The comparative ethylene-based polymer being a reaction product of polymerizing ethylene monomer and all C3 to C14 comonomers present in the ethylene-based polymer, if any, without the at least one polyene comonomer, under the defined polymerization reaction conditions; and a molecular weight tail quantified by an MWD area metric, ATAIL, and ATAIL is less than or equal to 0.04 as determined by gel permeation chromatography using a triple detector.

公开(公告)号：US20220402855A1

公开(公告)日：2022-12-22

申请号：US17773583

申请日：2020-12-17

Applicant: Dow Global Technologies LLC

Inventor： Evelyn Auyeung ,  Arkady L. Krasovskiy ,  Jaclyn Murphy ,  Bryan D. Stubbert ,  Anna V. Davis ,  Clark H. Cummins

IPC: C07C67/343

Abstract: The present disclosure relates to a process for preparing an alpha-substituted acrylate, the process comprising: a) combining starting materials comprising an alpha-(halomethyl) acrylate and an organozinc compound, thereby forming a product comprising the alpha-substituted acrylate.

公开(公告)号：US20230167222A1

公开(公告)日：2023-06-01

申请号：US17997480

申请日：2021-04-29

Applicant: Dow Global Technologies LLC

Inventor： Arkady L. Krasovskiy ,  Evelyn Auyeung ,  Bryan D. Stubbert ,  Anna V. Davis ,  Jianbo Hou ,  Clark H. Cummins

IPC: C08F293/00

CPC classification number: C08F293/005 ,  C08F2438/01

Abstract: The present disclosure relates to a process for preparing an olefin-acrylate block copolymer, the process comprising: a) performing atom transfer radical polymerization (ATRP) by combining ATRP materials comprising an acrylate monomer, an initiator having a radically transferrable atom or group, a transition metal compound, and a ligand, thereby forming a macroinitiator; and b) combining reaction materials comprising an alpha-substituted acrylate and the macroinitiator, thereby forming the olefin-acrylate block copolymer.

公开(公告)号：US20220402856A1

公开(公告)日：2022-12-22

申请号：US17773587

申请日：2020-12-17

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Evelyn Auyeung ,  Arkady L. Krasovskiy ,  Jaclyn Murphy ,  Bryan D. Stubbert ,  Anna V. Davis ,  Clark H. Cummins

IPC: C07C67/343

Abstract: The present disclosure relates to a process for preparing an alpha-substituted acrylate, the process comprising: a) combining starting materials comprising an alpha-(halomethyl) acrylate and an organoaluminum compound, thereby forming a product comprising the alpha-substituted acrylate.

公开(公告)号：US20220169761A1

公开(公告)日：2022-06-02

申请号：US17599970

申请日：2020-03-27

Applicant: Dow Global Technologies LLC

Inventor： Robert D.J. Froese ,  Rachel E. M. Brooner ,  Daniel J. Arriola ,  Bryan D. Stubbert ,  Oscar D. Redwine

IPC: C08F210/16 ,  C08F4/64 ,  C08F236/20

Abstract: Processes of synthesizing long-chain branched polymers. The processes include contacting together one or more C2-C14 alkene monomers, at least one diene, optionally a solvent, and a multi-chain catalyst optionally in the presence of hydrogen, wherein the multi-chain catalyst comprises a plurality of polymerization sites; producing at least two polymer chains of the C2-C14 alkene monomers, each polymer chain polymerizing at one of the polymerization sites; synthesizing the long-chain branched polymers by connecting the two polymer chains with the diene, the joining of the two polymer chains being performed in a concerted manner during the polymerization; and producing tri-functional long chain branches and tetra-functional long chain branches from the diene, wherein the long-chain branched polymers have a ratio of tri-functional to tetra-functional long chain branches from 0.05:1 to 100:0; and adjusting the ratio of tri-functional and tetra-functional long chain branches. The diene has a structure according to formula (I):

公开(公告)号：US20220033548A1

公开(公告)日：2022-02-03

申请号：US17280301

申请日：2019-09-27

Applicant: Dow Global Technologies LLC

Inventor： Robert D.J. Froese ,  Daniel J. Arriola ,  Bryan D. Stubbert

IPC: C08F210/18

Abstract: The present process embodiments for synthesizing long-chain branched copolymers include contacting together one or more C2-C14 alkene monomers, at least one diene or polyene, optionally a solvent, and a multi-chain catalyst. The multi-chain catalyst includes a plurality of polymerization sites and produces at least two polymer chains of the C2-C14 alkene monomers, each polymer chain polymerizing at one of the polymerization sites. The process synthesizes the long-chain branched polymers by connecting the two polymer chains with the diene or polyene, the joining of the two polymer chains being performed in a concerted manner during the polymerization.

公开(公告)号：US11708429B2

公开(公告)日：2023-07-25

申请号：US17260171

申请日：2019-07-29

Applicant: Dow Global Technologies LLC

Inventor： Bryan D. Stubbert

IPC: C07F7/00 ,  C08F4/76 ,  C08F4/64 ,  C08F10/02

CPC classification number: C08F4/76 ,  C07F7/003 ,  C08F4/64044 ,  C08F10/02 ,  C07F7/00

Abstract: Embodiments are directed to catalyst systems comprising at least one metal ligand complex and to processes for polyolefin polymerization incorporating the catalyst systems. The metal ligand complexes have the following structures: (I)

公开(公告)号：US11066489B2

公开(公告)日：2021-07-20

申请号：US16646237

申请日：2018-09-19

Applicant: Dow Global Technologies LLC

Inventor： Arkady L. Krasovskiy ,  David R. Wilson ,  Bryan D. Stubbert ,  Tulaza Vaidya ,  Jerzy Klosin ,  Edmund M. Carnahan ,  Philip P. Fontaine ,  Mari S. Rosen

IPC: C08F4/6592 ,  C07F7/08

Abstract: Embodiments are directed to a catalyst system comprising metal ligand complexes and processes for polyolefin polymerization using the metal ligand complex having the following structure: where each X is selected from the group consisting of —(CH2)SiRX3.

公开(公告)号：US11066428B2

公开(公告)日：2021-07-20

申请号：US16646228

申请日：2018-09-20

Applicant: Dow Global Technologies LLC

Inventor： Bryan D. Stubbert ,  Arkady L. Krasovskiy ,  Tulaza Vaidya ,  Jerzy Klosin ,  Edmund M. Carnahan ,  Philip P. Fontaine ,  Mari S. Rosen ,  David R. Wilson

IPC: C08F4/659 ,  C07F7/08 ,  C08F10/02

Abstract: Embodiments are directed to a catalyst system comprising metal-ligand complexes and processes for polyolefin polymerization using the metal-ligand complex having the following structure, Formula (I), where X is selected from the group consisting of —(CH2)SiRX3.

公开(公告)号：US20200270282A1

公开(公告)日：2020-08-27

申请号：US16646228

申请日：2018-09-20

Applicant: Dow Global Technologies LLC

Inventor： Bryan D. Stubbert ,  Arkady L. Krasovskiy ,  Tulaza Vaidya ,  Jerzy Klosin ,  Edmund M. Carnahan ,  Philip P. Fontaine ,  Mari S. Rosen ,  David R. Wilson

IPC: C07F7/08 ,  C08F4/659 ,  C08F10/02

Abstract: Embodiments are directed to a catalyst system comprising metal-ligand complexes and processes for polyolefin polymerization using the metal-ligand complex having the following structure, Formula (I), where X is selected from the group consisting of —(CH2)SiRX3.