公开(公告)号：EP4006061A1

公开(公告)日：2022-06-01

申请号：EP20847748.9

申请日：2020-07-24

申请人： China Petroleum & Chemical Corporation ,  BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION

发明人： LIN, Jie ,  ZHANG, Xiaofan ,  HUANG, Ting ,  ZHANG, Junhui ,  ZHOU, Junling ,  SUN, Zhufang ,  XIA, Xianzhi ,  ZHAO, Hui ,  GUO, Zifang ,  ZHAO, Jin ,  LIU, Haitao ,  FU, Meiyan ,  ZHANG, Jigui ,  QI, Lin ,  YAN, Lian ,  CEN, Wei ,  WANG, Yu

IPC分类号： C08F4/649 ,  C08F10/00

摘要： Disclosed are a catalyst system for olefin polymerization and use thereof. The catalyst system comprises a main catalyst and a cocatalyst. The cocatalyst comprises a twelve-membered ring compound represented by formula (M). The catalyst system provided in the present invention is particularly suitable for preparing polypropylene products having high stereoregularity and low ash, and can regulate the melt index of the products within a wide range by adjusting the amount of hydrogenation. The catalyst system provided in the present invention is also suitable for copolymerization systems to improve the copolymerization yield.

公开(公告)号：EP4230662A1

公开(公告)日：2023-08-23

申请号：EP21879533.4

申请日：2021-10-15

申请人： CHINA PETROLEUM & CHEMICAL CORPORATION ,  BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION

发明人： CEN, Wei ,  ZHOU, Junling ,  FU, Meiyan ,  YAN, Lian ,  SHI, Zhan ,  ZHANG, Xiaofan ,  XIA, Xianzhi ,  GUO, Zhengyang ,  ZHANG, Jigui ,  LIN, Jie ,  QI, Lin ,  ZHANG, Tianyi ,  ZHANG, Junhui ,  ZHAO, Hui ,  WANG, Yu ,  WANG, Ying

IPC分类号： C08F10/06 ,  C08F110/06 ,  C08F10/00 ,  C08F4/649 ,  C08F4/654

摘要： The present invention provides a magnesium-based solid and a solid catalyst component for olefin polymerization. By means of determination based on a nitrogen adsorption method, the solid has a multimodal pore distribution and a specific surface area of not less than 50 m 2 /g, and the pore size distribution of the solid is in a range of 1 nm to 300 nm. There is at least one peak within a pore size range of less than 10 nm, and there is at least another peak within a pore size range of not less than 10 nm. When the catalyst formed using the solid catalyst component is used for propylene polymerization, the catalyst has higher polymerization activity and higher stereotactic orientation capability, and the prepared polymer has a relatively wide molecular weight distribution.