| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of producing propylene type polymers having improved processability without loss of good mechanical properties of polypropylene. SOLUTION: The method is based on copolymerization of a polyene compound with propylene to obtain an isopropylene-based polymer. The method comprises copolymerizing a polyene compound with propylene in the presence of a catalyst prepared by containing together (A) modified particles obtained by contacting (a) a compound of formula M<SP>1</SP>L<SP>1</SP><SB>m</SB>(wherein, M<SP>1</SP>is a typical metal atom of the group 1, 2, 12, 14 or 15; and L<SP>1</SP>'s are each a hydrogen atom, a halogen atom or a hydrocarbon group), (b) a compound of formula R<SP>1</SP><SB>t-1</SB>TH (wherein, R<SP>1</SP>is an electron-attracting group or a group containing an electron- attracting group; and T is an atom of the group 15 or 16) and (c) a compound of formula R<SP>2</SP><SB>t-2</SB>TH<SB>2</SB>(wherein, R<SP>2</SP>is a hydrocarbon group or a halogenated hydrocarbon group) with (d) base particles, (B) a transition metal compound and an (C) organoaluminum compound. COPYRIGHT: (C)2004,JPO
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