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：US11643530B2

公开(公告)日：2023-05-09

申请号：US17227490

申请日：2021-04-12

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Dongming Li ,  Ching-Tai Lue ,  Qingyun Qian ,  Ling Ge ,  Gang Huang

IPC: C08L23/06 ,  C08J5/18

CPC classification number: C08L23/06 ,  C08J5/18 ,  C08J2323/06 ,  C08L2207/062 ,  C08L2207/066

Abstract: Embodiments relate to polyolefin compositions containing one or more high-density polyethylenes (HDPEs) and linear low-density polyethylenes (LLDPEs) and methods for forming the same. The polyolefin composition contains about 40 wt % to about 60 wt % of HDPE and about 40 wt % to about 60 wt % of LLDPE, by weight of the polyolefin composition. The HDPE has a density of greater than 0.93 g/cm3 and a melt index of about 0.2 dg/min to about 10 dg/min. The LLDPE has a density of less than 0.915 g/cm3 and a melt index of about 0.2 dg/min to about 10 dg/min. The polyolefin composition has a density of about 0.91 g/cm3 or greater, a melt index of about 0.5 dg/min to about 6 dg/min, and a Tw1−Tw2 value of about −25° C. or less.

公开(公告)号：US11274196B2

公开(公告)日：2022-03-15

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 ,  C08F4/653 ,  C08F4/6592 ,  C08F210/16 ,  C08F4/659 ,  C08F210/02 ,  C08F210/04 ,  C08F210/14 ,  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：US11193008B2

公开(公告)日：2021-12-07

申请号：US16604323

申请日：2018-03-23

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Ching-Tai Lue ,  Mark K. Davis ,  Wesley R. Mariott ,  Daniel P. Zilker ,  Phuong A. Cao

IPC: C08L23/08 ,  C08F210/16 ,  C08F4/76 ,  C08F4/64 ,  C08F4/659 ,  C08F4/6592

Abstract: A method for increasing the melt strength of a polyolefin polymer composition is provided. The method includes mixing a first polyolefin composition derived from at least one olefin polymerization catalyst (a) and at least one olefin polymerization catalyst (b) with a second polyolefin composition derived from the at least one olefin polymerization catalyst (b) or from at least one olefin polymerization catalyst (c), and obtaining the polyolefin polymer composition.

公开(公告)号：US11046796B2

公开(公告)日：2021-06-29

申请号：US16632240

申请日：2018-06-29

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Dongming Li ,  David M. Fiscus ,  Kevin A. Stevens ,  Ching-Tai Lue ,  Matthew W. Holtcamp

IPC: C08F210/16 ,  B29C48/00 ,  C08J5/18 ,  B29K23/00 ,  C08F10/02 ,  B29D7/01

Abstract: The present disclosure provides films made of polyethylene (PE) compositions. In at least one embodiment, a film includes a polyethylene composition, comprising: ethylene content and from 0 to 25 mol % of C3-C40 olefin comonomer content, based upon the total weight of the polyethylene composition, the polyethylene composition having a total internal plus terminal unsaturation greater than 0.7 unsaturations per 1000 carbon atoms, the film having: an Elmendorf Tear value in the machine direction of from 10 g/mil to 300 g/mil, and a Dart Drop Impact of from 100 g/mil to 800 g/mil. In at least one embodiment, the present disclosure provides for processes to make a film.

公开(公告)号：US20210054111A1

公开(公告)日：2021-02-25

申请号：US17090523

申请日：2020-11-05

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Matthew W. Holtcamp ,  Subramaniam Kuppuswamy ,  Matthew S. Bedoya ,  Kevin A. Stevens ,  Ching-Tai Lue ,  Hasnain Rangwalla

IPC: C08F4/6592 ,  C08F210/16 ,  C08F4/659 ,  C08F4/646 ,  C08F4/642

Abstract: A mixed metallocene catalyst system can comprise at least one metallocene catalyst compound comprising a structure represented by formula (A) below and optionally at least one other metallocene catalyst compound having a structure represented by formula (B) below: A mixed metallocene catalyst system can additionally include 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.

公开(公告)号：US10927203B2

公开(公告)日：2021-02-23

申请号：US16152470

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 ,  Rohan A. Hule ,  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：US10913808B2

公开(公告)日：2021-02-09

申请号：US16016060

申请日：2018-06-22

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Matthew W. Holtcamp ,  Laughlin G. McCullough ,  Matthew S. Bedoya ,  David F. Sanders ,  Charles J. Harlan ,  Ching-Tai Lue ,  Subramaniam Kuppuswamy

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

Abstract: The present disclosure provides a supported catalyst system and process for use thereof. In particular, the catalyst system includes an unbridged metallocene compound, an additional unbridged metallocene compound having a structure different than the first unbridged metallocene compound, a support material and an activator. The catalyst system may be used for preparing polyolefins.

公开(公告)号：US10723819B2

公开(公告)日：2020-07-28

申请号：US15877094

申请日：2018-01-22

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Matthew W. Holtcamp ,  Donna J. Crowther ,  Subramaniam Kuppuswamy ,  Matthew S. Bedoya ,  Laughlin G. McCullough ,  Ching-Tai Lue ,  David M. Fiscus

IPC: C08F4/653 ,  C08F4/6592 ,  C08F210/16 ,  C08L23/08 ,  C08F2/34 ,  C08F10/02 ,  C08F2/18 ,  C08F4/659

Abstract: This invention relates to a supported catalyst system and process for use thereof. In particular, the catalyst system includes bridged hafnium metallocene compound, an unbridged metallocene compound, a support material and an activator. The catalyst system may be used for preparing polyolefins.