Patent ID: 6309997
Filing Date: 2001-10-30
Classification: C07F,C08F

Abstract:
An olefin polymerization catalyst comprising:(A) a transition metal compound represented by the following formula (I): ##STR213##wherein M is a transition metal atom of Groups 3, 4, 5, 6, 7, 8, 9, 10 and 11 of the periodic table, wherein the transition metal atom of Group 5 is selected from the group consisting of Nb, Ta and V,m is an integer of 2 to 6,R.sup.1 to R.sup.6 may be the same or different, and are each a hydrogen atom, a halogen atom, a hydrocarbon group, a heterocyclic compound residue, an oxygen-containing group, a nitrogen-containing group, a boron-containing group, a sulfur-containing group, a phosphorus-containing group, a silicon-containing group, a germanium-containing group or a tin-containing group, and two or more of them may be bonded to each other to form a ring,and one of the groups of R.sup.1 to R.sup.6 in one moiety and one of the groups of R.sup.1 to R.sup.6 in another moiety may be bonded to each other, with the proviso that the groups R.sup.1 are not bonded to each other,n is a number satisfying a valence of M, and when M is V, n is not less than 1, andX is a hydrogen atom, a halogen atom, a hydrocarbon group, an oxygen-containing group, a sulfur-containing group, a nitrogen-containing group, a boron-containing group, an aluminum-containing group, a phosphorous-containing group, a halogen-containing group, a heterocyclic compound residue, a silicon-containing group, a germanium-containing group or a tin-containing group, and when n is 2 or greater, plural groups X may be the same or different and may be bonded to each other to form a ring, and when M is V, the oxygen-containing group is selected from the group consisting of alkoxy, aryl, ester, ether, acyl, carboxyl, carbonato, hydroxy, peroxy and carboxylic acid anhydride groups; and(B) at least one compound selected from the group consisting of:(B-1) an organometallic compound,(B-2) an organoaluminum oxy-compound, and(B-3) a compound which reacts with the transition metal compound (A) to form an ion pair,wherein when the transition metal atom M is one of Groups 9 and 10 of the periodic table, said compound (B) comprises one of the (B-2) compound or the (B-3) compound, andwherein R.sup.6 in the formula (I) is a halogen atom, a hydrocarbon group, a heterocyclic compound residue, an oxygen-containing group, a nitrogen-containing group, a boron-containing group, a sulfur-containing group, a phosphorus-containing group, a silicon-containing group, a germanium-containing group or a tin-containing group.