Transition metal compound, addition polymerization catalyst component, addition polymerization catalyst and process for production of olefin polymer

Abstract

A transition metal compound obtained by reacting (a) a transition metal compound represented by the following general formula (1) with (b) a conjugated or non-conjugated diene in the presence of a compound (c) selected from the group consisting of alkyllithiums, alkali metals, alkali metal hydrides and Grignard compounds, and a transition metal compound represented by the following general formula (2), an addition polymerization catalyst obtained by contacting the above-mentioned transition metal compound (2) with a co-catalyst for activation, and a method for producing an olefin polymer with the addition polymerization catalyst. (In the general formula (1) or (2), M represents a titanium atom, zirconium atom or hafnium atom, L represents a group having an aromatic π electron and is connected to M via the π electron, D represents a conjugated or non-conjugated diene, R represents a hydrogen atom, alkyl group, aralkyl group, aryl group or substituted silyl group, all R's may be the same or different, d is 1 or 2, p is 1 or 2, m is 0 or 1, and the sum of p and m is 2.).

What is claimed is:  
     
         1 . A transition metal compound obtained by reacting a transition metal compound (a) represented by the following general formula (1) with a conjugated diene or non-conjugated diene (b) in the presence of a compound (c) selected from the group consisting of alkyllithiums, alkali metals, alkali metal hydrides and Grignard compounds:  
       
         
           
           
               
               
           
         
       
       (wherein, M represents a titanium atom, zirconium atom or hafnium atom; L represents a group having an aromatic π electron and is connected to M via the π electron; R represents a hydrogen atom, alkyl group, aralkyl group, aryl group or substituted silyl group, all R's may be the same or different; p is 1 or 2; m is 0 or 1; and the sum of p and m is 2.).  
     
     
         2 . A transition metal compound represented by the following general formula (2):  
       
         
           
           
               
               
           
         
       
       (wherein, M represents a titanium atom, zirconium atom or hafnium atom; L represents a group having an aromatic π electron and is connected to M via the π electron; D represents a conjugated diene or non-conjugated diene; R represents a hydrogen atom, alkyl group, aralkyl group, aryl group or substituted silyl group, and all R's may be the same or different; d is 1 or 2; p is 1 or 2, m is 0 or 1; and the sum of p and m is 2.).  
     
     
         3 . The transition metal compound according to  claim 1 , wherein the compound(b) is a conjugated diene.  
     
     
         4 . The transition metal compound according to  claim 2 , wherein D in the general formula (2) is a conjugated diene.  
     
     
         5 . An addition polymerization catalyst obtained by contacting the transition metal compound of  claim 1  with a co-catalyst for activation.  
     
     
         6 . An addition polymerization catalyst obtained by contacting the transition metal compound of  claim 2  with a co-catalyst for activation.  
     
     
         7 . An addition polymerization catalyst according to  claim 5 , the co-catalyst is an organoaluminum compound (B) and/or a boron compound(C) below: 
 (C) Any boron compound of the following (C1) to (C3) 
 (C1) A boron compound represented by the general formula BQ 1 Q 2 Q 3    
 (C2) A boron compound represented by the general formula G + (BQ 1 Q 2 Q 3 Q 4 ) −   
 (C3) A boron compound represented by the general formula (L-H) + (BQ 1 Q 2 Q 3 Q 4 ) −   
 (wherein, B is a boron atom in the trivalent valence state, Q 1  to Q 4  are a halogen atom, hydrocarbon group, halogenated hydrocarbon group, substituted silyl group, alkoxy group or di-substituted amino group, and they may be the same or different. G +  is an inorganic or organic cation, L is a neutral Lewis base, and (L-H) +  is a BrΦnsted acid.).  
   
     
     
         8 . An addition polymerization catalyst according to  claim 6 , the co-catalyst is an organoaluminum compound (B) and/or a boron compound (C) below: 
 (C) Any boron compound of the following (C1) to (C3) 
 (C1) A boron compound represented by the general formula BQ 1 Q 2 Q 3    
 (C2) A boron compound represented by the general formula G + (BQ 1 Q 2 Q 3 Q 4 ) −   
 (C3) A boron compound represented by the general formula (L-H) + (BQ 1 Q 2 Q 3 Q 4 ) −   
 (wherein, B is a boron atom in the trivalent valence state, Q 1  to Q 4  are a halogen atom, hydrocarbon group, halogenated hydrocarbon group, substituted silyl group, alkoxy group or di-substituted amino group, and they may be the same or different. G +  is an inorganic or organic cation, L is a neutral Lewis base, and (L-H) +  is a BrΦnsted acid.).  
   
     
     
         7 . The addition polymerization catalyst according to  claim 6  wherein as the organoaluminum compound (B), one or more aluminum compounds selected from the following (B1) to (B3) are used: 
 (B1) An organoaluminum compound represented by the general formula E 1   a AlZ 3−a    
 (B2) Cyclic aluminoxane having a structure represented by the general formula {—Al(E 2 )-O—} b    
 (B3) Linear aluminoxane having a structure represented by the general formula E 3 {-Al(E 3 )-O—} c AlE 3   2  (wherein, each of E 1 , E 2  and E 3  is hydrocarbon group, and all E 1 s, all E 2 s and all E 3 S may be the same or different respectively. Z represents a hydrogen atom or halogen atom, and all Zs may be the same or different. a represents a number satisfying 0<a≦3, b is an integer of 2 or more, and c is an integer of 1 or more.).  
 
     
     
         9 . A process for producing an olefin polymer which comprises polymerizing one or more of olefins with the addition polymerization catalyst of  claim 7 .  
     
     
         10 . A process for producing an olefin polymer which comprises polymerizing one or more of olefins with the addition polymerization catalyst of  claim 8.