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公开(公告)号：US20250034292A1
公开(公告)日：2025-01-30
申请号：US18710820
申请日：2022-11-21
Applicant: Dow Global Technologies LLC
Inventor： Andrew M. Camelio , Rhett A. Baillie , Brad C. Bailey , Johnathan E. DeLorbe , Hien Q. Do , David M. Pearson , Philip P. Fontaine
IPC: C08F10/02
Abstract: Embodiments of the present application are directed to supported catalyst systems that include a metal-ligand complex having the structure of formula (I).
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公开(公告)号：US20240247084A1
公开(公告)日：2024-07-25
申请号：US18690474
申请日：2022-09-09
Applicant: Dow Global Technologies LLC
Inventor： David M. Pearson , Cole A. Witham
IPC: C08F4/52
CPC classification number: C08F4/52
Abstract: Embodiments are directed to catalyst systems comprising a metal-ligand complex procatalyst, a Lewis base, and an activator, wherein the activator comprises an anion and a cation, the anion having a structure according to formula (I).
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公开(公告)号：US20240052075A1
公开(公告)日：2024-02-15
申请号：US18277322
申请日：2022-02-10
Applicant: Dow Global Technologies LLC
Inventor： Joseph F. DeWilde , Ruth Figueroa , Leslie E. O'Leary , Susan Brown , David M. Pearson , Jerzy Klosin
IPC: C08F210/16
CPC classification number: C08F210/16
Abstract: Embodiments are directed towards a use of a biphenylphenol polymerization catalyst to make a polymer in a gas-phase or slurry-phase polymerization process conducted in a single gas-phase or slurry-phase polymerization reactor, wherein the biphenylphenol polymerization catalyst is made from a biphenylphenol polymerization precatalyst of Formula I, and wherein the biphenylphenol polymerization catalyst has a kinetic induction time of greater than 40 seconds as determined by a least squares fit of a first-order exponential for a rate of increase of an instantaneous polymerization rate for the gas-phase or slurry-phase polymerization process.
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公开(公告)号：US20230002515A1
公开(公告)日：2023-01-05
申请号：US17772910
申请日：2020-10-20
Applicant: Dow Global Technologies LLC
Inventor： Todd D. Senecal , David M. Pearson , Roxanne M. Jenkins
IPC: C08F4/64 , C07F7/00 , C08F210/16
Abstract: Processes of polymerizing olefin monomers using catalyst systems and catalysts systems that include a procatalyst having a structure according to formula (I):
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公开(公告)号：US11542350B2
公开(公告)日：2023-01-03
申请号：US17043154
申请日：2019-03-22
Applicant: Dow Global Technologies LLC
Inventor： Richard J. Keaton , Rafael Huacuja , David R. Wilson , Jerzy Klosin , David M. Pearson , Todd D. Senecal , Sukrit Mukhopadhyay , William H. H. Woodward
Abstract: Embodiments of the disclosure include processes of polymerizing olefins. The process includes contacting ethylene and a (C3-C40)alpha-olefin comonomer in the presences of a catalyst system. The catalyst system comprises a procatalyst and a bimetallic activator complex. The bimetallic activator complex comprises an anion and a countercation, and the anion has a structure according to formula (I).
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Patent Agency Ranking
公开(公告)号：US20220389137A1
公开(公告)日：2022-12-08
申请号：US17630798
申请日：2020-07-30
Applicant: Dow Global Technologies LLC
Inventor： Linfeng Chen , Kurt F. Hirsekorn , Jeffrey A. Simms , David M. Pearson
IPC: C08F210/16
Abstract: The catalyst system includes a heterogeneous procatalyst, an electron donor, and a hydrogenation procatalyst. The heterogeneous procatalyst includes a titanium species, an aluminum species, and a magnesium chloride component. The hydrogenation procatalyst has the formula Cp2TiXnTiCp2 or Cp2TiXn. In formula Cp2TiXn, each Cp is a cyclopentadienyl substituted with at least one R1, wherein R1 is (C1-C10)alkyl; and each X is independently monoanionic or neutral, wherein each X is independently (C1-C40)hydrocarbon, (C1-C40)heterohydrocarbon, (C1-C40)hydrocarbyl, (C1—C40)heterohydrocarbyl, or a halogen atom.
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公开(公告)号：US11447586B2
公开(公告)日：2022-09-20
申请号：US17043304
申请日：2019-03-26
Applicant: Dow Global Technologies LLC
Inventor： Richard J. Keaton , Rafael Huacuja , David R. Wilson , Jerzy Klosin , David M. Pearson , Todd D. Senecal , Sukrit Mukhopadhyay , William H. H. Woodward
Abstract: Embodiments of this disclosure include processes of polymerizing olefins, the process comprising contacting ethylene and a (C3-C40)alpha-olefin comonomer in the presence of a catalyst system, the catalyst system comprising a Group IV metal-ligand complex and an ionic metallic activator complex, the ionic metallic activator complex comprising an anion and a countercation, the anion having a structure according to formula (I):formula (I)
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48.发明申请公开(公告)号：US20220275114A1
公开(公告)日：2022-09-01
申请号：US17630791
申请日：2020-07-28
Applicant: Dow Global Technologies LLC
Inventor： Linfeng Chen , Andrew T. Heitsch , Jeffrey A. Sims , David M. Pearson , Kurt F. Hirsekorn
IPC: C08F4/6592 , C08F4/659 , C08F4/655 , C08F2/04
Abstract: The catalyst system includes a heterogeneous procatalyst and a hydrogenation procatalyst. The heterogeneous procatalyst includes a titanium species, an aluminum species, and a magnesium chloride component. The hydrogenation procatalyst has the formula Cp2TiX2, In formula Cp2TiX2, each Cp is a cyclopentadienyl substituted with at least one R1, wherein R1 is (C1-C10)alkyl; and each X is independently a halogen atom.
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公开(公告)号：US11421051B2
公开(公告)日：2022-08-23
申请号：US16954396
申请日：2018-12-13
Applicant: Dow Global Technologies LLC
Inventor： Linfeng Chen , David M. Pearson , Michael W. Tilston , Mridula Kapur , Robert N. Reib , Stephanie M. Whited
Abstract: A zirconocene-titanocene catalyst system comprising a zirconocene catalyst and a titanocene catalyst; polyolefins; methods of making and using same; and articles containing same.
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公开(公告)号：US20210079129A1
公开(公告)日：2021-03-18
申请号：US16954404
申请日：2018-12-13
Applicant: Dow Global Technologies LLC
Inventor： Linfeng Chen , David M. Pearson , Michael W. Tilston , Mridula Babli Kapur , Robert N. Reib , Stephanie M. Whited
IPC: C08F4/659 , C08F4/6592 , C08F2/01 , C08F2/34 , C08F210/02
Abstract: A hafnocene-titanocene catalyst system comprising a hafnocene catalyst and a titanocene catalyst; polyolefins; methods of making and using same; and articles containing same.
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