| abstract |
A catalyst for polymerizing vinyl compounds or α-olefins according to the present invention includes (A) a transition metal complex, (B) a clay, clay mineral or ion-exchangeable layered compound, modified with at least one organic compound selected from the group consisting of quaternary ammonium salts, amine compounds, and adducts of amine and Brönsted acid, and (C) at least one aluminoxy compound. The transition metal in (A) is selected from Groups 4 to 10 or Groups 8 to 10 of the Periodic Table for catalysts for vinyl compounds or α-olefins, respectively. The aluminoxy compound is represented by the general Formula n n n n n n n n n n wherein a plurality of R groups are each independently C 1-10 hydrocarbon group and at least one of the R groups is a hydrocarbon group having 2 or more carbon atoms; and z is an integer of 2 or more for catalyst for vinyl compounds and 2 to 4 for catalysts for α-olefins. |