Olefine polymerizing semi-metallocene catalyst and its prepn. and application

Application Number: 00107483
Application Date: 2000.05.19
Publication Number: 1324868
Publication Date: 2001.12.05
Priority Information:
International: C08F4/642;C08F10/00
Applicant(s) Name: China Petrochemical Group Corp.
Inventor(s) Name: Yi Jianjun;Xu Xuexiang;Zhao Wei
Patent Agency Code: 72001
Patent Agent: xu shu
Abstract The present invention relates to a catalyst for olefinic polymerization, and its general formula expression is [O,O]CpMX, where [O,O] is bivalent bidentate ligand group formed by binary aromatic plenol derivative, for example, pyrocatecholoxy group, 2,2'-biphenyldiphenoloxy group or 2,2'-dinaphthalenediphenoloxy group, Cp is a group containing cyclopentadiene skeleton, M is a metal selected from subgroup B of IV, and X is halogen, alkyl radical of C1-C24, alkoxy or alkaryl. Said catalyst can be matched with oxyalkylaluminium cocatalyst for implementing ethylene polymerization reaction. Said invention possesses high polymerization activity, and can save dosage of cocatalyst, and the obtained polyethylene product possesses moderate molecular weight and wide molecular weight distribution.