Patent ID: 6875718

Claim:
An olefin polymerization catalyst comprising: a transition metal compound; and at least one compound selected from the group consisting of an organometallic compound, an organoaluminum oxy-compound and a compound which reacts with said transition metal compound to form an ion pair, wherein said transition metal compound has the following formula I: wherein M is a transition metal atom selected from the group consisting of Groups 3-7 and 11 of the periodic table, R 1 to R 6 are 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, n is a number making (I) electrically neutral, and X 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 phosphorus-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.