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：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.

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：US20210070968A1

公开(公告)日：2021-03-11

申请号：US16644817

申请日：2018-06-28

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Dongming Li

IPC: C08L23/08 ,  B29C48/00 ,  C08J3/00

Abstract: A process is described for producing a multimodal polymer composition comprising a high molecular weight polymer (1) and a low molecular weight polymer (2), wherein the weight ratio of polymer (1) to polymer (2) is at a first value, x. The process comprises compounding in a first compounding stage a mixture of polymer (1) and polymer (2), wherein the weight ratio of polymer (1) to polymer (2) in the mixture is at a second value, y, such that y>x to form a first blend. Polymer (2) is then added to the first blend and the mixture of polymer (2) and the first blend is compounded in a second compounding stage to produce a second blend.

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：US20190161567A1

公开(公告)日：2019-05-30

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

Abstract: Polyethylene compositions including at least 65 wt % ethylene derived units, based upon the total weight of the polyethylene composition, are provided. Films made from these polyethylene compositions are also provided as well as processes for making the same.