Patent ID: 6323149
Filing Date: 2001-11-27
Classification: C07F,C08F,Y10S

Abstract:
A catalyst for the polymerization of olefins comprising:[A] a catalyst component comprising a transition metal compound represented by the general formula [1] or [2]:(R.sub.a Cp).sub.m (R'.sub.b Cp).sub.n M(--X--Ar--Y.sub.c).sub.4-(m+n) [1]wherein M represents titanium, zirconium or hafnium, Cp represents a radical having the cyclopentadienyl skeleton, R and R' each represents a hydrogen atom, an alkyl, an alkenyl, an aryl, an alkylaryl, an arylalkyl or an alkylsilyl radical, X represents an oxygen or a sulphur atom, Ar represents an aromatic ring, Y represents a hydrogen atom, a hydrocarbon radical, a silyl radical, a halogen atom, a halogenated hydrocarbon radical, a nitrogen-containing organic radical, an oxygen-containing organic radical or a sulphur-containing organic radical, each of a and b is an integer of 0 to 5, each of m and n is an integer of 0 to 3 and m+n is an integer of 1 to 3, and c is an integer of 1 to 5, with a proviso that Y is not a hydrogen atom when Ar is a benzene ring;R""(F.sub.d Cp) (R'.sub.e Cp)M(--X--Ar--Y.sub.c).sub.2 [2]wherein M represents titanium, zirconium or hafnium, Cp represents a radical having the cyclopentadienyl skeleton, R and R' each represents a hydrogen atom, an alkyl, an alkenyl, an aryl, an alkylaryl, an arylalkyl or an alkylsilyl radical, R"" represents a divalent radical which links (R.sub.d Cp) and (R'.sub.e Cp) and is selected from the group consisting of an alkylene, an arylalkylene, a dialkylsilylene, a dialkylgermylene, an alkylphosphindiyl or an alkylimino radical, X represents an oxygen or a sulphur atom, Ar represents an aromatic ring, Y represents a hydrogen atom, a hydrocarbon radical, a silyl radical, a halogen atom, a halogenated hydrocarbon radical, a nitrogen-containing organic radical, an oxygen-containing organic radical or a sulphur-containing organic radical, each of d and e is an integer of 0 to 4, and c is an integer of 1 to 5, with a proviso that Y is not a hydrogen atom when Ar is a benzene ring; and[B] an organic aluminum oxy compound or a cation generator.