公开(公告)号：US11214631B2

公开(公告)日：2022-01-04

申请号：US16182856

申请日：2018-11-07

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Jian Yang ,  Gregory J. Karahalis ,  Timothy M. Boller ,  Yan Jiang

IPC: C07F17/00 ,  C08F4/6592 ,  C08F210/16 ,  C08F10/02 ,  C08F2/34

Abstract: This invention relates to catalyst systems comprising a catalyst compound having a bridged group 4 metal metallocene (where the bridge preferably contains an (Me2Si)2 group, an activator, and a support material. In some embodiments, the present disclosure provides for polyolefins and a process for producing a polyolefin composition comprising contacting at least one olefin with a catalyst system.

公开(公告)号：US10889663B2

公开(公告)日：2021-01-12

申请号：US16192493

申请日：2018-11-15

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Jian Yang ,  John R. Hagadorn ,  Gregory J. Karahalis ,  Timothy M. Boller ,  Evan J. Morris ,  Yan Jiang ,  Patrick Brant

IPC: C07F17/00 ,  C08F4/6592 ,  C08F210/16 ,  C08F4/649 ,  C08F210/02 ,  C08F210/14 ,  C08F4/659 ,  C08J5/18 ,  C08F2/34

Abstract: The present disclosure relates to asymmetric ansa-metallocene catalyst compounds that include at least one indenyl ligand substituted at the 3-position with a C3-C40 α-branched alkyl, such as 1-methylethyl, 1-methylpropyl, 1-methylbutyl, 1-ethylbutyl, 1,3-dimethylbutyl, 1-methyl-1-ethylbutyl, 1,1-diethylbutyl, 1-propylpentyl, and the like. Catalyst systems prepared with the catalyst compounds, polymerization methods using such catalyst systems, and polyolefins made using the polymerization methods are also described.

公开(公告)号：US20190263953A1

公开(公告)日：2019-08-29

申请号：US16410504

申请日：2019-05-13

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Dongming Li ,  Jian Yang ,  Kevin A. Stevens ,  Yan Jiang ,  Gregory J. Smith-Karahalis

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

Abstract: This invention relates to a polyethylene composition, and films therefrom, comprising at least 65 wt % ethylene derived units and from 0.1 to 35 wt % of C3-C12 olefin comonomer derived units, where the polyethylene composition has: a) an RCI,m of less than 85 kg/mol; b) a Tw1-Tw2 value of from −15 to −40° C.; and c) an Mw1/Mw2 value of less than 1.5 where the film has a) a heat seal initiation temperature of X ° C. or less at 5 N of force, where X=0.0015×Y(psi)+62.6 (where Y is the average 1% Secant modulus ((MD+TD)/2)) of the film; b) a dart drop impact of 300 g/mil or more; c) an MD Elmendorf tear of 230 g or more; and d) average 1% Secant modulus ((MD+TD)/2) of 20,000 psi or more.

公开(公告)号：US20190161560A1

公开(公告)日：2019-05-30

申请号：US16192493

申请日：2018-11-15

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Jian Yang ,  John R. Hagadorn ,  Gregory J. Karahalis ,  Timothy M. Boller ,  Evan J. Morris ,  Yan Jiang ,  Patrick Brant

IPC: C08F4/6592 ,  C08F4/659 ,  C08F4/649 ,  C08F210/02 ,  C08F210/14 ,  C08J5/18

Abstract: The present disclosure relates to asymmetric ansa-metallocene catalyst compounds that include at least one indenyl ligand substituted at the 3-position with a C3-C40 α-branched alkyl, such as 1-methylethyl, 1-methylpropyl, 1-methylbutyl, 1-ethylbutyl, 1,3-dimethylbutyl, 1-methyl-1-ethylbutyl, 1,1-diethylbutyl, 1-propylpentyl, and the like. Catalyst systems prepared with the catalyst compounds, polymerization methods using such catalyst systems, and polyolefins made using the polymerization methods are also described.

公开(公告)号：US20190144571A1

公开(公告)日：2019-05-16

申请号：US16182856

申请日：2018-11-07

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Jian Yang ,  Gregory J. Karahalis ,  Timothy M. Boller ,  Yan Jiang

IPC: C08F10/02 ,  C07F17/00

Abstract: This invention relates to catalyst systems comprising a catalyst compound having a bridged group 4 metal metallocene (where the bridge preferably contains an (Me2Si)2 group, an activator, and a support material. In some embodiments, the present disclosure provides for polyolefins and a process for producing a polyolefin composition comprising contacting at least one olefin with a catalyst system.

公开(公告)号：US20230174757A1

公开(公告)日：2023-06-08

申请号：US17997119

申请日：2021-04-27

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Ru Xie ,  Matthew W. Holtcamp ,  David M. Fiscus ,  Dongming Li ,  Laughlin G. McCullough ,  Matthew S. Bedoya ,  Kevin A. Steven ,  Yan Jiang ,  Joseph A. Moebus

IPC: C08L23/08 ,  C08F2/34 ,  C08F210/16 ,  C08F4/6592 ,  C08F4/70 ,  C08J5/18

CPC classification number: C08L23/0815 ,  C08F2/34 ,  C08F210/16 ,  C08F4/65925 ,  C08F4/7042 ,  C08J5/18 ,  C08F2500/27 ,  C08F2500/31 ,  C08F2500/38 ,  C08L2203/16 ,  C08L2207/066 ,  C08L2314/06 ,  C08L2314/08 ,  C08J2323/08

Abstract: The present disclosure generally relates to catalyst systems, polyethylene compositions, and uses of such compositions in, e.g., films. In an embodiment is provided a film that includes a polyethylene composition, comprising: ethylene and a C3-C40 olefin comonomer, the polyethylene composition having at least 75 wt % ethylene content and from 0 wt % to 25 wt % of a C3-C40 olefin comonomer content based upon the total weight of the composition as determined by GPC-IR5-LS-VIS, the film having: an average of MD and TD 1% secant modulus of 42,000 psi or greater as determined by ASTM D-882, and a Dart Drop Impact of greater than 400 g/mil, as determined by ASTM D1709. In another embodiment is provided a process for producing a polyethylene composition, comprising: introducing, under first polymerization conditions, ethylene and a C3-C40 alpha-olefin to a catalyst system in a reactor, the catalyst system comprising a first catalyst compound, a second catalyst compound, and an activator; and forming a polyethylene composition.

公开(公告)号：US20230167254A1

公开(公告)日：2023-06-01

申请号：US17997113

申请日：2021-04-23

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Ru Xie ,  Mattew W. Holtcamp ,  David M. Fiscus ,  Dongming Li ,  Laughlin G. McCullough ,  Matthew S. Bedoya ,  Kevin A. Stevens ,  Yan Jiang ,  Joseph A. Moebus

IPC: C08J5/18 ,  C08F210/02

CPC classification number: C08J5/18 ,  C08F210/02 ,  C08J2323/08

Abstract: The present disclosure generally relates to catalyst systems, polyethylene compositions, and uses of such compositions in, e.g., films. In an embodiment is provided a film that includes a polyethylene composition, comprising: ethylene and a C3-C40 olefin comonomer, the polyethylene composition having at least 65 wt % ethylene content and from 0 wt % to 35 wt % of a C3-C40 olefin comonomer content based upon the total weight of the composition, the film having: an average of MD and TD 1% secant modulus of 43,000 psi or greater, and a Dart Drop Impact Strength of greater than 500 g/mil. In another embodiment is provided a process for producing a polyethylene composition that includes introducing ethylene and a C3-C40 alpha-olefin to a catalyst system, the catalyst system comprising a first catalyst compound, a second catalyst compound, and an activator; and forming a polyethylene composition.

公开(公告)号：US11130827B2

公开(公告)日：2021-09-28

申请号：US16410504

申请日：2019-05-13

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Dongming Li ,  Jian Yang ,  Kevin A. Stevens ,  Yan Jiang ,  Gregory J. Smith-Karahalis

IPC: C08F210/16 ,  C08F4/6592 ,  C08J5/18 ,  H01B3/30 ,  B32B27/08 ,  C08F4/659

Abstract: This invention relates to a polyethylene composition, and films therefrom, comprising at least 65 wt % ethylene derived units and from 0.1 to 35 wt % of C3-C12 olefin comonomer derived units, where the polyethylene composition has: a) an RCI,m of less than 85 kg/mol; b) a Tw1−Tw2 value of from −15 to −40° C.; and c) an Mw1/Mw2 value of less than 1.5 where the film has a) a heat seal initiation temperature of X ° C. or less at 5 N of force, where X=0.0015×Y(psi)+62.6 (where Y is the average 1% Secant modulus ((MD+TD)/2)) of the film; b) a dart drop impact of 300 g/mil or more; c) an MD Elmendorf tear of 230 g or more; and d) average 1% Secant modulus ((MD+TD)/2) of 20,000 psi or more.