Process for the preparation of polyolefins

Details Process for the preparation of polyolefins Process for the preparation of polyolefins

C - Chemistry, Metallurgy

08

F

402/645

C08F 10/00 (2006.01) C08F 2/00 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01)

Patent

CA 1190998

- 1 - Abstract of the disclosure The invention relates to a process for the prepar- ation of polyolefins by polymerizing olefins of the formula CH2CHR in which R = H or C1-C10 alkyl, on their own or as a mixture, if appropriate together with C4-C12 .alpha.,m-diolefins in solvents, liquid monomers or the gas phase, at tempera- tures between -50 and 200°C, using a catalyst system composed of a soluble, halogen-containing transition metal compound of the general formula (cyclopentadienyl)2 Me R Hal in which R is cyclopentadienyl or a C1-C6 alkyl radical or a halogen, in particular chlorine, Me is a transition metal, in particular zirconium, and Hal is a halogen, in particular chlorine, and a compound, containing aluminum, of the alumin- oxane type having the general formulae Al2OR4(Al(R)-O)n for a linear aluminoxane and/or (Al(R)-O)n+2 for a cyclic aluminoxane, in which n is a number from 4 to 20 and R is a methyl or ethyl radical, preferably a methyl radical.

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