公开(公告)号：US10934376B2

公开(公告)日：2021-03-02

申请号：US16160492

申请日：2018-10-15

Applicant: ExxonMobil Chemical Patents Inc.

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

IPC: C08F210/16 ,  C08J5/18 ,  C09K3/10 ,  C08F4/659 ,  C08F4/6592

Abstract: Provided herein are polyethylene compositions with broad orthogonal composition distribution. The polyethylene compositions may comprise at least 65 wt % ethylene-derived units and from 0 to 35 wt % of C3 to C12 olefin comonomer-derived units, and furthermore may exhibit a reversed comonomer index (RCI,m) of 100 kg/mol or greater, a Tw1-Tw2 value of from −16 to −38° C., and an Mw1/Mw2 value of at least 0.9, such as 0.9 to 4. Also provided are processes for making the polyethylene compositions, as well as films made from the polyethylene compositions. Such films may feature superior film stiffness for a given polyethylene composition density, and accordingly such films in some embodiments have average MD/TD modulus and density satisfying the following equation: Avg. Modulus≥1.2*(C1*Density−C2), where C1 and C2 are constants, such as C1=2,065,292 and C2=1,872,345.

公开(公告)号：US20190144575A1

公开(公告)日：2019-05-16

申请号：US16152458

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 ,  Matthew S. Bedoya

IPC: C08F210/16 ,  C08J5/18

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：US20180155459A1

公开(公告)日：2018-06-07

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: C08F4/14 ,  C08F4/659

CPC classification number: C08F4/14 ,  C08F4/65904 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/6592 ,  C08F4/65925 ,  C08F210/16 ,  C08F2410/01 ,  C08F2420/02 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/26

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：US10822434B2

公开(公告)日：2020-11-03

申请号：US16117008

申请日：2018-08-30

Applicant: ExxonMobil Chemical Patents Inc.

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

IPC: C08F10/02 ,  C08F210/16 ,  C08F4/6592 ,  C08F2/34 ,  C08F2/44 ,  C08F210/02 ,  C08J5/18 ,  C08F4/659

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：US10808053B2

公开(公告)日：2020-10-20

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: C08F210/16 ,  C08F10/02 ,  C08F4/6592 ,  C08F2/34 ,  C08F2/44 ,  C08F210/02 ,  C08J5/18 ,  C08F4/659

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：US10703838B2

公开(公告)日：2020-07-07

申请号：US16137059

申请日：2018-09-20

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Matthew W. Holtcamp ,  David F. Sanders ,  Matthew S. Bedoya ,  Ching-Tai Lue

IPC: C08F4/6592 ,  C08F210/16 ,  C08F210/02 ,  C08J5/18 ,  C08F4/659

Abstract: The present disclosure provides a supported catalyst system and process for use thereof. In particular, the catalyst system includes four different catalysts, a support material and an activator. The catalyst system may be used for preparing polyolefins, such as polyethylene.

公开(公告)号：US20200056026A1

公开(公告)日：2020-02-20

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, Ziiker ,  Pbuong A. Cao

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

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：US20180327524A1

公开(公告)日：2018-11-15

申请号：US15950416

申请日：2018-04-11

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Ching-Tai Lue ,  Phillip T. Matsunaga ,  Donna J. Crowther

IPC: C08F10/02

CPC classification number: C08F10/02 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/12 ,  C08F4/65927 ,  C08F4/65904 ,  C08F4/65912 ,  C08F4/65916

Abstract: A catalyst system including two or more metallocene catalysts and processes for using the same to produce polyolefin polymer compositions are provided. The polyolefin polymer compositions have a good balance of a melt index ratio and normalized melt strength.

公开(公告)号：US20180171049A1

公开(公告)日：2018-06-21

申请号：US15806556

申请日：2017-11-08

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Ching-Tai Lue ,  Phillip T. Matsunaga ,  David H. McConville ,  Tae Hoon Kwalk

IPC: C08F210/02

CPC classification number: C08F210/02 ,  C08F4/659 ,  C08F4/65916 ,  C08F210/16 ,  C08F2500/07 ,  C08F2500/12 ,  C08F2500/08 ,  C08F2500/04 ,  C08F2500/13 ,  C08F4/64148

Abstract: Methods for making a high density polyethylene composition are provided. The methods can include contacting ethylene and at least one non-ethylene comonomer with a catalyst system in a gas phase reactor in the presence of hydrogen at an ethylene partial pressure of 100 psi or more to produce a polyethylene copolymer. In one or more embodiments, the catalyst system can include one or more bis amides. The resulting polyethylene copolymer can have a density of about 0.945 g/cm3 or more; a melt index (I2) of about 5 dg/min to about 50 dg/min; a melt index ratio (I21/I2) of about 20 to about 35; and a molecular weight distribution of about 3.0 to about 10.

公开(公告)号：US20210324185A1

公开(公告)日：2021-10-21

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

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.