| abstract |
It describes a catalyst of formula (1).n n n Formula 1n n n n n n n n In Chemical Formula 1,n n n Q is ring Ligands, wherein R is a group consisting of hydrogen, N (R ') 2 , OR', and R 'wherein R' is each independently C 1 -C 10 alkyl, C 6 -C 15 aryl, C Is selected from the group consisting of 7 to C 15 aralkyl.n n n Each X is independently hydrogen, halogen, C 1 to C 10 alkoxy, C 1 to C 10 dialkylamino, methyl and n n n Wherein each R 1 is independently selected from the group consisting of halogen, C 1 to C 10 alkoxy and R ',n n n L is n n n Is selected from the group consisting of Q and X, where n is 0 to 5, where L can be bridged with Q,n n n B is any base,n n n X is selected from the group consisting of titanium, zirconium and hafnium. |