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.