专利检索 ap:("Formosa Plastics Corporation, U.S.A.") AND inv:"Cyrus C. Y. Lee" 第 1 页

1.

发明公开
Carbonate Compounds as Activity Limiting Agents in Ziegler-Natta Catalyst Compositions for Olefin Polymerization 审中-公开

公开(公告)号：US20240043576A1

公开(公告)日：2024-02-08

申请号：US17882774

申请日：2022-08-08

申请人： Formosa Plastics Corporation, U.S.A.

发明人： Lei Zhang , Gapgoung Kong , Guangxue Xu , Cyrus C. Y. Lee , Chih-Jian Chen

IPC分类号： C08F4/642 , C08F10/06

CPC分类号： C08F4/6421 , C08F10/06 , C08F2410/01

摘要： Disclosed is a Ziegler-Natta catalyst composition comprising one or more Ziegler-Natta procatalyst compositions which comprise magnesium, titanium, a halogen, one or more internal electron donors; one or more aluminum containing cocatalysts; optionally one or more stereo-selectivity control agents (SCA); and one or more activity limiting agents (ALA) comprising one or more alkyl-, cycloalkyl- or aryl carbonates and derivatives. Such a Ziegler-Natta catalyst composition exhibits self-limiting catalyst activity in olefin polymerization, particularly propylene polymerization.