Ziegler-natta catalyst for olefin polymerization including aryloxy group and method for polymerization of olefin using same

A method for olefin polymerization, which comprises carrying out polymerization in the presence of a main catalyst which is a Ziegler-Natta catalyst produced by a method comprising a step of reacting a transition metal compound having a general formula of MXp−(q+r)(OAr1)q(OAr2)r, with an organomagnesium compound having a general formula of MgX2−mRm, wherein M represents a transition metal having an oxidation number of 4 or more, selected from Groups IV, V or VI of the Periodic table;

• X represents a halogen atom;
• Ar1 and Ar2 each represents substituted or unsubstituted aryl group of 6 to 30 carbon atoms, in which the Ar1 and Ar2 are not linked to each other;
• p represents the oxidation number of M of 4 or more;
• q and r satisfy 0≦q≦p, 0≦r≦p and 2≦q+r≦p;
• R represents an alkyl group of 1 to 16 carbon atoms;
• and m satisfies 0<m≦2, and
• a co-catalyst which is an alkyl aluminum compound having a general formula of AlRnX(3−n), wherein R represents an alkyl group of 1 to 16 carbon atoms;
• X represents a halogen atom;
• and n satisfies 1≦n≦3.