公开(公告)号：US20240317905A1

公开(公告)日：2024-09-26

申请号：US18545505

申请日：2023-12-19

Applicant: EXXONMOBIL CHEMICAL PATENTS INC. ,  THE TRUSTEES OF PRINCETON UNIVERSITY

Inventor： Nikola S. Lambic ,  Brian J. Rohde ,  Irene C. Cai ,  Sarah J. Mattler ,  Tzu-Pin Lin ,  Gursu Culcu ,  Jo Ann M. Canich ,  Jarod M. Younker ,  Alex E. Carptenter ,  Paul J. Chirik

IPC: C08F10/14 ,  C08F4/659 ,  C08F4/6592

CPC classification number: C08F10/14 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65927

Abstract: Vinylcyclobutane (VCB) homopolymers, VCB copolymers and processes for making same. The VCB homopolymers and copolymers have a polydispersity (PDI) of less than 3.0 and are made by contacting VCB monomer in the presence of a single-site metallocene, post metallocene, or half metallocene, and an activator, under sufficient reaction conditions to produce a VCB (co)polymer having the narrow PDI of less than 3.0. The resulting poly(vinylcyclobutane) polymers have increased crystallinity and melting point properties (Tm of 165° C. to 246° C.) that are comparable to conventional polyolefins such as polyethylene (typical Tm

公开(公告)号：US20230348634A1

公开(公告)日：2023-11-02

申请号：US17796519

申请日：2020-08-11

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Jo Ann M. Canich ,  Ru Xie ,  Gregory J. Smith-Karahalis ,  Sarah J. Mattler ,  Mikhail I. Sharikov ,  Alexander Z. Voskoboynikov ,  Vladislav A. Popov ,  Dmitry V. Uborsky ,  Georgy P. Goryunov ,  John R. Hagadorn ,  Peijun Jiang

IPC: C08F4/659 ,  C08F10/06

CPC classification number: C08F4/65912 ,  C08F10/06 ,  C08F4/65908

Abstract: This invention relates to a homogeneous process to produce propylene polymers using transition metal complexes of a dianionic, tridentate ligand that features a central neutral heterocyclic Lewis base and two phenolate donors, where the tridentate ligand coordinates to the metal center to form two eight-membered rings. Preferably the bis(phenolate) complexes are represented by Formula (I):




where M, L, X, m, n, E, E′, Q, R1, R2, R3, R4, R1′, R2′, R3′, R4′, A1, A1′,




and




are as defined herein, where A1QA1′ are part of a heterocyclic Lewis base containing 4 to 40 non-hydrogen atoms that links A2 to A2′ via a 3-atom bridge with Q being the central atom of the 3-atom bridge.

公开(公告)号：US11732063B2

公开(公告)日：2023-08-22

申请号：US17173926

申请日：2021-02-11

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Georgy P. Goryunov ,  Mikhail I. Sharikov ,  Vladislav A. Popov ,  Dmitry V. Uborsky ,  Alexander Z. Voskoboynikov ,  John R. Hagadorn ,  Jo Ann M. Canich

IPC: C08F4/64 ,  C07F7/00 ,  C08F4/642 ,  C08F210/16

CPC classification number: C08F4/64151 ,  C08F4/6428 ,  C08F210/16 ,  C07F7/003

Abstract: The present disclosure relates to Lewis base catalysts. Catalysts, catalyst systems, and processes of the present disclosure can provide high temperature ethylene polymerization, propylene polymerization, or copolymerization. In at least one embodiment, the catalyst compounds belong to a family of compounds comprising amido-phenolate-heterocyclic ligands coordinated to group 4 transition metals. The tridendate ligand may include a central neutral hetrocyclic donor group, an anionic phenolate donor, and an anionic amido donor. In some embodiments, the present disclosure provides a catalyst system comprising an activator and a catalyst of the present disclosure. In some embodiments, the present disclosure provides a polymerization process comprising a) contacting one or more olefin monomers with a catalyst system comprising: i) an activator and ii) a catalyst of the present disclosure.

公开(公告)号：US20230212330A1

公开(公告)日：2023-07-06

申请号：US18000417

申请日：2021-05-27

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Jian Yang ,  Hua Zhou ,  Jo Ann M. Canich ,  Jennifer L. Rapp

IPC: C08F4/76 ,  C08F2/06 ,  C08F110/14

CPC classification number: C08F4/76 ,  C08F2/06 ,  C08F110/14 ,  C08F2410/01 ,  C08F2420/08 ,  C08F2420/12

Abstract: This invention relates to a method comprising contacting C3-C32 alpha olefin with catalyst system comprising activator and catalyst of the formula wherein: M is Hf or Zr; T is a bridging group; each X is independently a leaving group; R1 and R2 are independently hydrogen, or a Ci-Gto optionally substituted hydrocarbyl group, halide, or siloxyl group; R3, R4, R5 and R6 are independently a Ci-Gto optionally substituted hydrocarbyl, halocarbyl, silylcarbyl, aminocarbyl, or siloxyl group; and A is an aliphatic, aromatic or heteroaromatic ring, optionally bearing one or more additional fused rings which may be aliphatic, aromatic or heteroaromatic; obtaining a plurality of vinyl-terminated polyalphaolefins (PAOs) having at least 30 mol % vinyl terminated PAO's.

公开(公告)号：US11613593B2

公开(公告)日：2023-03-28

申请号：US17173850

申请日：2021-02-11

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Jo Ann M. Canich ,  Jian Yang ,  Alexander Z. Voskoboynikov ,  Andrey F. Asachenko ,  Oleg V. Samsonov ,  Georgy P. Goryunov

IPC: C07F17/00 ,  C08F4/6592 ,  C08F4/642 ,  C08F4/659 ,  C08F10/02 ,  C08F10/06

Abstract: Metallocene complexes represented by the structure below are useful for alpha olefin oligomerization in the presence of an activator to generate polyalphaolefins having a high percentage of vinylidene termination and relatively low Mn values. M is a group 4 transition metal. A is a bridging group having one bridging atom extending between a first indenyl ring and a second indenyl ring. Each X is independently an anionic ligand, or two Xs are joined and bound to M to form a metallocycle ring, or two Xs are joined to form a chelating ligand, a diene ligand, or an alkylidene ligand. R1, R1′, R3, R3′, R4, R4′, R7 and R7′ are hydrogen. R5, R5′, R6, and R6′ are independently a C1-C10, optionally substituted, hydrocarbyl group, or R5 and R6 and/or R5′ and R6′ are bonded together to form an optionally substituted hydrocarbyl ring structure.

公开(公告)号：US11254763B2

公开(公告)日：2022-02-22

申请号：US16787909

申请日：2020-02-11

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Georgy P. Goryunov ,  Mikhail I. Sharikov ,  Vladislav A. Popov ,  Dmitry V. Uborsky ,  Alexander Z. Voskoboynikov ,  John R. Hagadorn ,  Michelle E. Titone ,  Alex E. Carpenter ,  Catherine A. Faler ,  Jo Ann M. Canich

IPC: C08F210/16 ,  C08F10/02 ,  C08F10/06 ,  C08F110/06 ,  C08F110/02 ,  C07F7/00 ,  B01J31/22 ,  C08F4/64

Abstract: This invention relates to transition metal complexes of a dianionic, tridentate ligand that features a central neutral heterocyclic Lewis base and two phenolate donors, where the tridentate ligand coordinates to the metal center to form two eight-membered rings. Preferably the bis(phenolate) complexes are represented by Formula (I): where M, L, X, m, n, E, E′, Q, R1, R2, R3, R4, R1′, R2′, R3′, R4′, A1, A1′, are as defined herein, where A1QA1′ are part of a heterocyclic Lewis base containing 4 to 40 non-hydrogen atoms that links A2 to A2′ via a 3-atom bridge with Q being the central atom of the 3-atom bridge.

公开(公告)号：US11248070B2

公开(公告)日：2022-02-15

申请号：US16788124

申请日：2020-02-11

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Georgy P. Goryunov ,  Vladislav A. Popov ,  Dmitry V. Uborsky ,  Alexander Z. Voskoboynikov ,  John R. Hagadorn ,  Irene C. Cai ,  Jo Ann M. Canich

IPC: C08F10/14 ,  C08F10/06

Abstract: The present disclosure relates to Lewis base catalysts. Catalysts, catalyst systems, and processes of the present disclosure can provide high temperature ethylene polymerization, propylene polymerization, or copolymerization as the Lewis base catalysts (e.g., bis(aryl phenolate) five-membered ring catalysts), can be stable at high polymerization temperatures and have good activity at the high polymerization temperatures. The stable catalysts with good activity can provide formation of polymers having high molecular weights or polymers having low to very molecular weights, and the ability to make an increased amount of polymer in a given reactor, as compared to conventional catalysts. Hence, the present disclosure demonstrates highly active catalysts capable of operating at high reactor temperatures while producing polymers with controlled molecular weights and or robust isotacticity.

公开(公告)号：US20210332164A1

公开(公告)日：2021-10-28

申请号：US17226659

申请日：2021-04-09

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： John R. Hagadorn ,  Peijun Jiang ,  Francis C. Rix ,  Charles J. Harlan ,  Jo Ann M. Canich

IPC: C08F4/659

Abstract: It has become desirable to limit or exclude aromatic solvents, such as toluene, from polymerization reactions. For polymerization reactions employing a non-metallocene transition metal complex as a precursor to a polymerization catalyst, exclusion of aromatic solvents may be difficult due to the limited solubility of such complexes in aliphatic hydrocarbon solvents. Aliphatic hydrocarbon solutions suitable for conducting olefin polymerization reactions, particularly solution polymerization reactions, may comprise: a non-metallocene transition metal complex dissolved in an aliphatic hydrocarbon solvent at a concentration ranging from about 2 mM to about 20 mM at 25° C. in the presence of an organoaluminum compound. A molar ratio of aluminum of the organoaluminum compound to transition metal of the transition metal complex is about 1:1 or greater, and the organoaluminum compound comprises at least about 8 carbons per aluminum.

公开(公告)号：US11117983B2

公开(公告)日：2021-09-14

申请号：US16638961

申请日：2018-07-05

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Aaron Sattler ,  George Rodriguez ,  Charles J. Harlan ,  Aakriti Jain ,  Florin Barsan ,  Danica L. Nguyen ,  Michael F. McDonald, Jr. ,  Jo Ann M. Canich

IPC: C08F6/02

Abstract: A method for making a polymer, having the steps of (a) polymerizing one or more monomers in the presence of a solvent and a catalyst to form a reaction product; (b) removing an effluent from the reaction product, where the effluent comprises an active catalyst and one or more unreacted monomers; (c) combining a quench, comprising carbon dioxide, with the effluent to form a quenched polymer stream, having a carboxyl metal complex; and (d) recovering a polymer from the quenched polymer stream.

公开(公告)号：US11041035B2

公开(公告)日：2021-06-22

申请号：US16289918

申请日：2019-03-01

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： John R. Hagadorn ,  Jo Ann M. Canich ,  Jingwen Zhang ,  Peijun Jiang ,  Britni J. Brobey

IPC: C08F2/38 ,  C08F4/643 ,  C08F4/642 ,  C08F210/06 ,  C08F236/20 ,  C08F210/16 ,  C08F10/02 ,  C08F2/00 ,  C08K5/01 ,  C08F4/64 ,  C08F4/659 ,  C08K5/56

Abstract: The present disclosure provides methods for producing an olefin polymer including: i) contacting alpha-olefin with a first catalyst system comprising a first non-metallocene catalyst, a first activator, and a reversible chain transfer agent to form a first polymer; ii) contacting the first polymer with a coupling agent in the presence of a catalyst, an activator; and iii) obtaining a second polymer. The present disclosure further provides polymers having a g′vis value from about 0.4 to about 0.8 and a vinyl unsaturation content of 0.8 or greater vinyls/1000 carbons, and preferably low gel content.