公开(公告)号：US11649331B2

公开(公告)日：2023-05-16

申请号：US17309173

申请日：2019-11-13

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Ching-Tai Lue ,  Dongming Li ,  Hasnain Rangwalla ,  Matthew F. Yott

IPC: C08J5/18 ,  C08L23/08 ,  B29C48/00

CPC classification number: C08J5/18 ,  C08L23/0815 ,  B29C48/0018 ,  C08J2323/08 ,  C08L2203/162 ,  C08L2205/025 ,  C08L2205/035

Abstract: Provided herein are polyethylene films made of the polyethylene blends having improved properties, particularly in Elmendorf tear and puncture resistance. The polyethylene blends include two primary polyethylene blends.

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：US10662262B2

公开(公告)日：2020-05-26

申请号：US15804554

申请日：2017-11-06

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Dongming Li ,  Ching-Tai Lue ,  Phillip T. Matsunaga ,  Mark B. Davis

IPC: C08F2/04 ,  C08F4/14 ,  C08F210/16 ,  C08F4/659 ,  C08F4/6592

Abstract: Borate activated catalyst systems and methods for making the same for gas phase or slurry phase olefin polymerization are provided. The catalyst system can include a first catalyst comprising a borate activated mono cyclopentadienyl metallocene compound and a second catalyst comprising a supported bis cyclopentadienyl metallocene complex. A supported bis cyclopentadienyl metallocene complex can be prepared to provide a preformed, supported catalyst, wherein the supported bis cyclopentadienyl metallocene complex comprises bis(1,3-methylbutyl cyclopentadienyl) zirconium dichloride. The preformed, supported catalyst can be mixed with mineral oil or hydrocarbon solvent to form a slurry. The slurry can be mixed with a borate activated mono cyclopentadienyl metallocene compound to form the borate activated catalyst system.

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：US20190161559A1

公开(公告)日：2019-05-30

申请号：US16160718

申请日：2018-10-15

Applicant: ExxonMobil Chemical Patents Inc.

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

IPC: C08F4/6592 ,  C08F4/659 ,  C08F4/642 ,  C08F10/04 ,  C08F210/16 ,  B01J31/22

Abstract: Catalyst systems including more than one metallocene catalysts and processes for using the same are provided to produce polyolefin polymers such as polyethylene polymers.

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：US20180155474A1

公开(公告)日：2018-06-07

申请号：US15806100

申请日：2017-11-07

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Matthew W. Holtcamp ,  Ching-Tai Lue ,  Adriana S. Silva ,  Dongming Li ,  David M. Fiscus

IPC: C08F210/02 ,  C08J5/18

CPC classification number: C08F210/02 ,  B32B27/32 ,  B32B27/327 ,  C08J5/18 ,  C08J2323/08 ,  C08L23/0815 ,  C08L2203/16 ,  C08L2314/06 ,  C08F210/16 ,  C08F4/65925 ,  C08F4/65927 ,  C08F4/65916 ,  C08F210/14 ,  C08F2500/05 ,  C08F2500/10 ,  C08F2500/12 ,  C08F2500/26 ,  C08F4/65904

Abstract: A polyethylene useful for a film including ethylene derived units and within a range from 0.5 to 20 wt % of C3 to C12 α-olefin derived units, an I2 value within a range from 0.5 to 20 g/10 min, an I21 value within a range from 5 to 100 g/10 min, the polyethylene formed from a process comprising combining a bridged bis-cyclopentadienyl Group 4 metal catalyst, an unbridged bis-cyclopentadienyl Group 4 metal catalyst, and an activator with ethylene and within a range from 0.1 to 5 wt %, relative to the weight of all monomers, of a C3 to C12 α-olefin at a temperature within a range from 60 to 100° C.

公开(公告)号：US11787881B2

公开(公告)日：2023-10-17

申请号：US17054085

申请日：2019-06-18

Applicant: ExxonMobil Chemical Patents Inc.

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

IPC: C08F210/16 ,  C08F10/02 ,  C08J5/18

CPC classification number: C08F10/02 ,  C08F210/16 ,  C08J5/18 ,  C08J2323/08

Abstract: A polyethylene composition having 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 0.15 to about 0.40 per 1000 carbon atoms, an MI of from about 0.1 to about 6 g/10 min, an HLM1 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 −50 to about −23° C., an Mw1/Mw2 value of from about 2.0 to about 3.5, an Mw/Mn of from about 4.5 to about 12, an Mz/Mw of from about 2.5 to about 3.0, an Mz/Mn of from about 15 to about 25, and a g′(vis) greater than 0.90.

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.