公开(公告)号：US20240209124A1

公开(公告)日：2024-06-27

申请号：US18557110

申请日：2022-04-25

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Diwaker SINGH ,  Richard B. PANNELL ,  Timothy M. BOLLER ,  Gerardo CORONA ,  Fred D. EHRMAN ,  Charles J. HARLAN ,  Yan JIANG ,  Chi-l KUO ,  William A. LAMBERTI ,  Sateesh K. RAJPUT ,  Shayan KARIMIPOUR

IPC: C08F2/34

CPC classification number: C08F2/34 ,  C08F2410/02 ,  C08F2410/05 ,  C08F2410/08

Abstract: Processes for transitioning from a first catalyst to a second catalyst in a gas phase polymerization reactor. In some embodiments, the processes relate to transitioning from a metallocene catalyst to a Ziegler-Natta catalyst. In other embodiments, the processes relate to transitioning from a first Ziegler-Natta catalyst to a second Ziegler-Natta catalyst.