| 摘要 |
A polyolefin is produced by polymerizing at least one olefin in the presence of a catalyst comprising the following ¢I! , ¢II! , and ¢III! : ¢I! a solid catalyst component prepared by reacting the reaction product prepared by reacting the following components (1), (2) and (3) in the presence of a compound represented by the general formula R3OH wherein R3 represents a hydrocarbon group having 6-20 carbon atoms which may contains a hetero atom such as oxygen, nitrogen, sulfur or chlorine with the following component (4): (1) a silicon oxide and/or an aluminum oxide; (2) a reaction product obtained by the reaction of a magnesium halide and a compound represented by the general formula Me(OR1)nXz-N wherein Me represents an element of Groups I to IV in the Periodic Table, z represents the valence of the element Me, n is O < n ? z, X is a halogen atom, and R1 is a hydrocarbon group having 1 to 20 carbon atoms; (3) a titanium compound represented by the general formula Ti(OR2)mX4 -m wherein R2 is a hydrocarbon group having 1 to 20 carbon atoms, X is a halogen atom, and m is 0 ? m ? 4; and (4) an organoaluminum compound represented by the general formula Al(OR4),R54X3 - (p + q) wherein R4 and R5 are each a hydrocarbon group having 1-24 carbon atoms and may be same or different, X is a halogen atom or hydrogen atom and p and q are 0 ? p < 3, 0 ? q < 3, provided that 0 < p+q < 3; ¢II! a silicon compound having at least one bonding selected from Si-N-C and Si-O-C; and ¢III! an organometallic compound.
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