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RARE EARTH METAL COMPLEX, POLYMERIZATION CATALYST AND METHOD FOR PRODUCING POLYMER 发明申请

2023-03-03 4140 1869K 0

专利信息

申请日期 2025-07-10 申请号 US12309082
公开(公告)号 US20090253875A1 公开(公告)日 2009-10-08
公开国别 US 申请人省市代码 全国
申请人 Taichi Senda; Hidenori Hanaoka
简介 A rare earth metal complex represented by the formula (1) : in which A represents a Group 14 element of the periodic table, Cp represents a group having a substituted or unsubstituted cyclopentadienyl anion moiety, Ln represents a Group 3 metal atom or a lanthanoid metal atom, R1 to R6 are the same or different, and represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, a silyl group substituted with a hydrocarbon group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, R7 represents an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, or an aralkyl group having 7 to 20 carbon atoms, Xs represent a monoanionic ligand, Ys represent a neutral ligand, m represents an integer of 1 to 3, and n represents an integer of 0 to 3. The rare earth metal complex is useful as, for example, a catalyst for polymerization reaction of olefins. A polar monomer such as a lactone can be polymerized using the rare earth metal complex as a catalyst.


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