公开(公告)号：US11976140B2

公开(公告)日：2024-05-07

申请号：US17279708

申请日：2019-10-30

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： David F Sanders ,  Matthew W. Holtcamp ,  Kevin A. Stevens ,  Joshua P Olson

IPC: C08F210/16 ,  B01J8/00 ,  B01J8/22 ,  C08F2/01 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/02

CPC classification number: C08F10/02 ,  B01J8/004 ,  B01J8/22 ,  C08F2/01 ,  C08F4/65925 ,  C08F4/65927 ,  C08F210/16 ,  B01J2208/00548 ,  B01J2208/00787 ,  B01J2208/00849

Abstract: A process for polymerizing polyethylene is disclosed. The process comprises contacting ethylene and at least one comonomer with a catalyst system to produce a polyolefin. The first catalyst and at least a portion of the second catalyst are co-supported to form a commonly-supported catalyst system. The catalyst system is introduced to a line as a dry-feed. The line is coupled with a polymerization reactor. A carrier fluid is added to the line to form a slurry. The slurry is introduced to the polymerization reactor.

公开(公告)号：US11712687B2

公开(公告)日：2023-08-01

申请号：US17071696

申请日：2020-10-15

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Matthew W. Holtcamp ,  Kevin A. Stevens ,  Laughlin G. McCullough ,  David F. Sanders ,  Subramaniam Kuppuswamy ,  Matthew S. Bedoya

IPC: C08L23/08 ,  C08F210/16 ,  C08F4/646 ,  C08F4/6592 ,  B01J31/22 ,  B01J31/14 ,  B01J31/16 ,  B01J31/18 ,  C08F4/653 ,  C08F210/14 ,  C08F4/659 ,  C08F4/70

CPC classification number: B01J31/2295 ,  B01J31/143 ,  B01J31/1608 ,  B01J31/1616 ,  B01J31/1815 ,  C08F4/653 ,  C08F210/14 ,  C08L23/0815 ,  B01J2531/0244 ,  B01J2531/48 ,  B01J2531/49 ,  B01J2531/842 ,  B01J2540/20 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65925 ,  C08F4/7042 ,  C08F210/16 ,  C08L2207/066 ,  C08L2314/06

Abstract: A catalyst system including the product of the combination of an unbridged Group 4 metallocene compound and a 2,6-bis(imino)pyridyl iron complex is provided. A process for the polymerization of monomers (such as olefin monomers) and a polymer produced therefrom are also provided.

公开(公告)号：US20230192744A1

公开(公告)日：2023-06-22

申请号：US17997123

申请日：2021-04-23

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Nikola S. Lambic ,  Matthew W. Holtcamp

IPC: C07F15/06 ,  C07F15/02 ,  C08F10/02

CPC classification number: C07F15/065 ,  C07F15/025 ,  C08F10/02

Abstract: Compositions may comprise symmetrical and asymmetrical pyridine-containing transition metal-complexes having appended group 13 Lewis acids positioned on the pyridine-containing ligands of the transition metal-complex such that the group 13 Lewis acid may be near the catalytic site, thereby allowing the appended group 13 Lewis acid to function more efficiently in promoting formation of a catalytically active species. Catalysts systems may comprise these symmetrical and asymmetrical pyridine-containing transition metal-complexes and methods of preparing polyolefins may use these catalyst systems.

公开(公告)号：US20220033536A1

公开(公告)日：2022-02-03

申请号：US17279728

申请日：2019-10-30

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Kevin A. Stevens ,  David F. Sanders ,  Matthew W. Holtcamp ,  Charles J. Harlan ,  Xuan Ye ,  Adriana S. Silva ,  Matthew S. Bedoya ,  Joshua P. Olson

IPC: C08F2/34 ,  C08F2/01 ,  C08F4/659 ,  C08F210/16 ,  C08F4/6592 ,  B01J8/18 ,  B01J8/24

Abstract: In an embodiment, a method for producing a polyolefin is provided. The method includes: contacting a first composition and a second composition in a line to form a third composition, wherein: the first composition comprises a contact product of a first catalyst, a second catalyst, a support, and a diluent, wherein the mol ratio of second catalyst to first catalyst is from 60:40 to 40:60, the second composition comprises a contact product of the second catalyst and a second diluent; introducing the third composition from the line into a gas-phase fluidized bed reactor; exposing the third composition to polymerization conditions; and obtaining a polyolefin.

公开(公告)号：US20210179650A1

公开(公告)日：2021-06-17

申请号：US17119161

申请日：2020-12-11

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Matthew W. Holtcamp ,  Robert L. Halbach ,  Subramaniam Kuppuswamy ,  Matthew S. Bedoya

IPC: C07F15/02 ,  C08F210/16

Abstract: The present disclosure related to iron-containing compounds including a 2,6-diiminoaryl ligand and one or more substituted hydrocarbyl substituents. Catalysts, catalyst systems, and processes of the present disclosure can provide polyolefins with high or low molecular weight, low comonomer content, narrow polydispersity indices, and broad orthogonal composition distribution. The present disclosure provides new and improved iron-containing catalysts with enhanced solubility in hydrophobic (nonpolar) solvents.

公开(公告)号：US10927202B2

公开(公告)日：2021-02-23

申请号：US16152458

申请日：2018-10-05

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Ching-Tai Lue ,  Adriana S. Silva ,  Matthew W. Holtcamp ,  David F. Sanders ,  Ryan W. Impelman ,  Richard E. Pequeno ,  Charles J. Harlan ,  Xuan Ye ,  Dongming Li ,  Matthew S. Bedoya

IPC: C08F210/16 ,  C08J5/18 ,  C08F4/659 ,  C08F4/6592

Abstract: Polyethylene compositions including at least 65 wt % ethylene derived units and from 0 to 35 wt % of C3-C12 olefin comonomer derived units, based upon the total weight of the polyethylene composition are provided. The polyethylene compositions have a) an RCI,m of 100 kg/mol or greater and one or both of: b) a Tw1-Tw2 value of from −16 to −38° C.; and c) an Mw1/Mw2 value of at least 0.9. The polyethylene compositions may be used to manufacture articles such as films.

公开(公告)号：US10926250B2

公开(公告)日：2021-02-23

申请号：US16206480

申请日：2018-11-30

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Matthew W. Holtcamp ,  Kevin A. Stevens ,  Laughlin G. McCullough ,  David F. Sanders ,  Subramaniam Kuppuswamy ,  Matthew S. Bedoya

IPC: C08L23/08 ,  C08F4/70 ,  C08F210/16 ,  C08F4/653 ,  B01J31/22 ,  B01J31/18 ,  C08F210/14 ,  B01J31/16 ,  B01J31/14 ,  C08F4/6592 ,  C08F4/659

Abstract: A catalyst system including the product of the combination of an unbridged Group 4 metallocene compound and a 2,6-bis(imino)pyridyl iron complex is provided. A process for the polymerization of monomers (such as olefin monomers) and a polymer produced therefrom are also provided.

公开(公告)号：US20210016265A1

公开(公告)日：2021-01-21

申请号：US16910015

申请日：2020-06-23

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Matthew W. Holtcamp ,  Crisita Carmen H. Atienza ,  David A. Cano ,  Matthew S. Bedoya

IPC: B01J31/18 ,  B01J31/22 ,  C08F4/64 ,  C08F4/642 ,  C08F4/60 ,  C08F4/659

Abstract: This invention relates to a supported catalyst system comprising a first iron based catalyst, a second group 4 metal catalyst, a support material, and an activator; wherein the first catalyst is represented by Formula (I) and the second catalyst is represented by Formula (II):

公开(公告)号：US10851187B2

公开(公告)日：2020-12-01

申请号：US16250515

申请日：2019-01-17

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Matthew W. Holtcamp ,  Subramaniam Kuppuswamy ,  Matthew S. Bedoya ,  Kevin A. Stevens

IPC: C07F17/00 ,  C08F4/6592 ,  C08F4/659 ,  C08F210/16 ,  C08F4/646

Abstract: A metallocene catalyst compound can comprise a structure represented by formula (F-MC) below comprising a first cyclopentadienyl ring with carbon atoms directly connected with R1, R2, R4, and R5, and a second cyclopentadienyl ring with carbon atoms directly connected with R10, R11, R12, and R13, and a bridging group (BG) directly connecting the first and second cyclopentadienyl rings A catalyst system can include the metallocene compound, a non-coordinating anion type activator comprising a supported alumoxane or aluminum alkyl, and optionally a scavenger. A process for making a polymeric product can comprise: contacting a C2-C22 alpha-olefin feed with the catalyst system to obtain a polymerization reaction mixture; and obtaining a polymer product from the polymerization reaction mixture. A polymer product can be made by the process to exhibit at least an Mn from 7000 g/mol to 70000 g/mol and a PDI from 4.1 to 9.0.

公开(公告)号：US10717790B2

公开(公告)日：2020-07-21

申请号：US15565624

申请日：2016-03-10

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Xuan Ye ,  Matthew W. Holtcamp ,  Laughlin G. McCullough ,  Jo Ann M. Canich ,  David F. Sanders ,  Gregory S. Day ,  Michelle E. Titone

IPC: C08F4/02 ,  C08F4/6592 ,  C08F210/16 ,  B01J31/22 ,  C08F210/14 ,  C08F4/659

Abstract: This invention relates to a catalyst system including fluorided silica, alkylalumoxane activator and a bridged monocyclopentadienyl group 4 transition metal compound, where the fluorided support has not been calcined at a temperature of 400° C. or more, and is preferably, produced using a wet mix method, particularly an aqueous method.