| 摘要 |
PURPOSE: A catalyst for the polymerization of olefins and a method for preparing an olefin homopolymer, a polyene and a cycloolefin polymer by using the catalyst are provided, to improve the activity of a catalyst. CONSTITUTION: The catalyst comprises a cyclopentadienyl compound represented by (C5R1(x-m)H(5-x))R2m(C5R1(y-m)H(5-y))nMQ(3-n) (wherein M is Ti, Zr or Hf; C5R1(x-m)H(5-x) and C5R1(y-m)H(5-y) are a cyclopentadienyl group substituted identically or differently; and Q's which are identical or different one another represent H, a halogen atom, OH, SH, R1, OR1, SR1, NR1_2 or PR1_2); an organometallic aluminum compound represented by AlR4(3-z)Hz (wherein R4's are identical or different one another and are an alkyl, alkenyl or alkylaryl group of C1-C10 capable of containing Si or Ge, at least one among R4's is other than a linear alkyl group, and z is 0 or 1); and the product obtained by contacting with water, wherein the molar ratio of aluminum to water is 1:1 to 100:1 and at least one aluminum compound represented by AlR4(3-z)Hz is present in the form other than the alumoxane compound represented by the formula III.
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