RARE EARTH METAL COMPLEX, POLYMERIZATION CATALYST AND METHOD FOR PRODUCING POLYMER
申请人:Senda Taichi
公开号:US20090253875A1
公开(公告)日:2009-10-08
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, R
1
to R
6
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, R
7
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.
一种稀土金属配合物,其化学式为(1):其中A代表周期表中的14族元素,Cp代表具有取代或未取代的环戊二烯基阴离子基团的群,Ln代表3族金属原子或镧系金属原子,R1到R6相同或不同,表示氢原子,卤素原子,具有1至20个碳原子的烷基,具有6至20个碳原子的芳基,具有7至20个碳原子的芳基烷基,被取代的含有1至20个碳原子的碳氢基的硅基基团,具有1至20个碳原子的烷氧基,R7表示具有1至20个碳原子的烷基,具有6至20个碳原子的芳基或具有7至20个碳原子的芳基烷基,X代表单阴离子配体,Y代表中性配体,m表示1至3的整数,n表示0至3的整数。该稀土金属配合物可用作例如α烯烃聚合反应的催化剂。可以使用该稀土金属配合物作为催化剂聚合极性单体,例如内酯。