公开(公告)号：US20210023540A1

公开(公告)日：2021-01-28

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: B01J31/22 ,  B01J31/18 ,  C08L23/08 ,  C08F210/14 ,  B01J31/16 ,  B01J31/14 ,  C08F4/653

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：US20200231790A1

公开(公告)日：2020-07-23

申请号：US16632177

申请日：2018-06-22

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Dongming Li ,  Ching-Tai Lue ,  Adriana S. Silva ,  Matthew W. Holtcamp ,  Laughlin G. McCullough ,  David F. Sanders ,  Matthew S. Bedoya

IPC: C08L23/08 ,  C08F210/02 ,  C08F210/04 ,  C08F210/14 ,  C08F4/659 ,  C08F4/6592 ,  C08J5/18

Abstract: A polyethylene composition comprising from about 0.5 to about 20 wt % of alpha-olefin derived units other than ethylene-derived units, with the balance including ethylene-derived units, total internal unsaturations (Vy1+Vy2+T1) of from about 0.10 to about 0.40 per 1000 carbon atoms, an MI of from about 0.1 to about 6 g/10 min, an HLMI of from about 5.0 to about 40 g/10 min, a density of from about 0.890 to about 0.940 g/ml, a Tw1-Tw2 value of from about −25 to about −20° C., an Mw1/Mw2 value of from about 1.2 to about 2.0, an Mw/Mn of from about 4.5 to about 12, an Mz/Mw of from about 2.0 to about 3.0, an Mz/Mn of from about 7.0 to about 20, and a g′(vis) greater than 0.90.

公开(公告)号：US20190119417A1

公开(公告)日：2019-04-25

申请号：US16117023

申请日：2018-08-30

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Dongming Li ,  Ching-Tai Lue ,  Adriana S. Silva ,  Matthew W. Holtcamp ,  David F. Sanders ,  Laughlin G. McCullough ,  Matthew S. Bedoya ,  Subramaniam Kuppuswamy

IPC: C08F210/02 ,  C08J5/18 ,  C08F2/34 ,  C08F2/44

Abstract: Polyethylene compositions including at least 65 wt % ethylene derived units, based upon the total weight of the polyethylene composition, are provided.

公开(公告)号：US20180237558A1

公开(公告)日：2018-08-23

申请号：US15852553

申请日：2017-12-22

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Laughlin G. McCullough

IPC: C08F10/02

CPC classification number: C08F10/02 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/65916 ,  C08F210/16 ,  C08F2420/01 ,  C08F210/14 ,  C08F4/65925

Abstract: This invention relates to hafnium metallocene compounds having a group substituted (preferably at the 3 position) on at least one cyclopentadienyl ring represented by the formula —R20—SiR′3 or —R20—CR′3 where R20 is a C1 to C4 hydrocarbyl (preferably methyl) and R′ is a C1 to C20 substituted or unsubstituted hydrocarbyl.

公开(公告)号：US20170114168A1

公开(公告)日：2017-04-27

申请号：US15252684

申请日：2016-08-31

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Glen E. Alliger ,  Laughlin G. McCullough

IPC: C08F210/16

CPC classification number: C08F210/16 ,  C08F4/63912 ,  C08F4/63916 ,  C08F4/6392 ,  C08F4/65927 ,  C08F2420/01 ,  C08F4/63904 ,  C08F210/14 ,  C08F2500/04 ,  C08F2500/12 ,  C08F2500/05

Abstract: Disclosed are methods for polymerizing olefin monomers comprising contacting one or more olefin monomers with a cosupported catalyst system and an activator. Also disclosed are polymers produced using the catalyst systems and methods disclosed herein. The polymers have a multimodal molecular weight distribution and may be produced in a single reactor.

公开(公告)号：US09376559B2

公开(公告)日：2016-06-28

申请号：US14525766

申请日：2014-10-28

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Matthew W. Holtcamp ,  Laughlin G. McCullough ,  Celestino M. Perez, Jr. ,  Sarah J. Mattler

IPC: C08F2/00 ,  C08F4/6592 ,  C08L23/16 ,  C08L23/08 ,  C08L23/14 ,  C08L23/06 ,  C08J5/18 ,  C08L23/04 ,  C08F4/659

CPC classification number: C08L23/142 ,  C08F2/001 ,  C08F4/65912 ,  C08F4/65916 ,  C08J5/18 ,  C08J2323/04 ,  C08J2323/06 ,  C08J2323/14 ,  C08L23/04 ,  C08L23/06 ,  C08L23/08 ,  C08L2205/02 ,  C08L2205/025 ,  C08L2314/06 ,  C08L23/10 ,  C08F210/16 ,  C08F210/06 ,  C08F210/14 ,  C08F4/65927 ,  C08L23/14

Abstract: This invention relates to processes to prepare impact copolymers having an ethylene content of greater than 20 wt % using a process where ethylene polymer is made in the first stage and propylene polymer is made in the second stage.

Abstract translation: 本发明涉及使用在第一阶段制备乙烯聚合物并在第二阶段中制备丙烯聚合物的方法制备乙烯含量大于20重量％的抗冲共聚物的方法。

公开(公告)号：US10479846B2

公开(公告)日：2019-11-19

申请号：US15852553

申请日：2017-12-22

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Laughlin G. McCullough

IPC: C08F10/02 ,  C08F210/16 ,  C08F4/65 ,  C08F4/659

Abstract: This invention relates to hafnium metallocene compounds having a group substituted (preferably at the 3 position) on at least one cyclopentadienyl ring represented by the formula —R20—SiR′3 or —R20—CR′3 where R20 is a C1 to C4 hydrocarbyl (preferably methyl) and R′ is a C1 to C20 substituted or unsubstituted hydrocarbyl.

公开(公告)号：US20190248929A1

公开(公告)日：2019-08-15

申请号：US16270027

申请日：2019-02-07

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Laughlin G. McCullough

IPC: C08F10/02

CPC classification number: C08F10/02

Abstract: This invention relates to a supported catalyst system and process for use thereof. In particular, the catalyst system includes a benzindenyl transition metal complex, a support material and an activator. The catalyst system may be used for preparing polyolefins, such as polyethylene.

公开(公告)号：US10351647B2

公开(公告)日：2019-07-16

申请号：US15558067

申请日：2016-04-15

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Matthew W. Holtcamp ,  Gregory S. Day ,  Laughlin G. McCullough ,  David F. Sanders

IPC: C08F4/76 ,  C08F210/16 ,  C08F4/64 ,  C08F4/60 ,  C08F4/659 ,  C08L23/06 ,  C08F4/6592 ,  C08F10/00 ,  C08F210/06 ,  C08F210/14

Abstract: This invention relates to a process to polymerize olefins by contacting one or more olefins with a catalyst system comprising an organoaluminum treated layered silicate support, and a bridged metallocene compound and obtaining a polyolefin having a g′vis of 0.90 or more and an MIR of 30 or less.

公开(公告)号：US20180072823A1

公开(公告)日：2018-03-15

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

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.