Catalyst for olefin polymerization and process for producing olefin polymer using the catalyst

Claim 1

A catalyst for olefin polymerization consisting of: a catalyst compound (A) which is a transition metal compound represented by the general formula M(R) l (OR') m X n- (l+m) (wherein M represents a transition metal atom selected from the group consisting of Ti, Zr, Hf and V; R and R' each represents a hydrocarbon group of 1 to 20 carbon atoms; X represents a halogen atom; l, m and n represent numbers satisfying l≧0, m≧0 and n-(l-m)≧0; and n corresponds to the valency of the transition metal), a catalyst component (B) which is an aluminoxane obtained by the reaction of a trialkylaluminum and water, and a catalyst compound (C) which is an organic compound having at least 2 hydroxyl groups, represents by the general formula (V) and (VI) ##STR5## (wherein R 5 represents hydrogen or a hydrocarbon group of 1 to 6 carbon atoms); R 1 , R 2 , R 3 and R 4 each represents a hydrocarbon group of 1 to 20 carbon atoms, a hydroxyl group, a nitro group, a nitrile group, a hydrocarbyloxy group or a halogen atom, and R 1 , R 2 , R 3 and R 4 may be the same or different; n' is 0 or an integer of 1 or larger and represents the times of repetition of the unit Y; y, y' and y", z, z' and z" each represents the number of a substituent bonding to an aromatic ring, y, y', z and z' each represents 0 or an integer of 1 to 4, y" and z" each represents 0 or an integer of 1 to 2 wherein component (C) is prereacted with component (A), the ratio of component (A) to component (C) being 1:1, and the ratio of Al to the transition metal (M) being 10-10,000.