公开(公告)号：US20230022149A1

公开(公告)日：2023-01-26

申请号：US17757000

申请日：2020-11-18

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Matthew W. HOLTCAMP ,  Dongming LI ,  Kevin A. STEVENS ,  Laughlin G. MCCULLOUGH

IPC: C08F210/16 ,  C08J5/18

Abstract: A polyethylene suitable for use in blown film can comprise ethylene derived units and C3 to C12 α-olefin derived units at 0.5 wt % to 10 wt % of the polyethylene and have a reversed-co-monomer index (RCI,m) of 35 to 100, a comonomer distribution ratio (CDR-2,m) of 1.20 to 1.80, and a weight average molecular weight (Mw) to number average molecular weight (Mn) of 5 to 7.

公开(公告)号：US20220025136A1

公开(公告)日：2022-01-27

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

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：US20220025135A1

公开(公告)日：2022-01-27

申请号：US17309172

申请日：2019-11-13

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Ching-Tai LUE ,  Dongming LI ,  Matthew F. YOTT ,  Arturo LEYVA ,  Adriana S. SILVA ,  Matthew W. HOLTCAMP ,  Ryan W. IMPELMAN ,  Richard E. PEQUENO ,  Laughlin G. MCCULLOUGH ,  Hasnain RANGWALLA ,  James M. FARLEY

IPC: C08J5/18 ,  C08L23/08

Abstract: Films produced with polyethylene blends having improved stiffness and heat sealing are provided herein. The films may have an average MD/TD 1% secant modulus greater than or equal to about 3300 psi. The films may also have a heat seal initiation temperature at 5 N of less than or equal to about 95° C. or a hot tack seal initiation temperature at 1 N of less than or equal to about 95° C.

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.

公开(公告)号：US20230322972A1

公开(公告)日：2023-10-12

申请号：US18043088

申请日：2021-09-29

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Matthew W. HOLTCAMP ,  Laughlin G. MCCULLOUGH ,  Kevin A. STEVENS ,  Dongming LI ,  Robert L. HALBACH ,  Ramyaa MATHIALAGAN ,  Charles J. HARLAN ,  Timothy M. BOLLER

IPC: C08F4/76 ,  C08F4/02 ,  C08F4/80 ,  C08F210/16 ,  C08F2/34

CPC classification number: C08F4/76 ,  C08F4/025 ,  C08F4/80 ,  C08F210/16 ,  C08F2/34 ,  C08F2410/06 ,  C08F2420/08

Abstract: This invention relates to a supported catalyst system comprising: (i) at least one first catalyst component comprising a group 4 metallocycle containing metallocene complex; (ii) at least one second catalyst component comprising a 2,6-bis(imino)pyridyl iron complex; (iii) activator; and (iv) support. The catalyst system may be used for preparing polyolefins, such a bimodal polyethylene, typically in a gas phase polymerization.