Olefine polymerisation catalyst and the production and use...

Details Olefine polymerisation catalyst and the production and use... Olefine polymerisation catalyst and the production and use...

C - Chemistry, Metallurgy

08

F

252/105, 402/584

C08F 4/64 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1141368

ABSTRACT A component of a polymerisation catalyst is prepared by reacting an organo-magnesium compound, or a complex with an organo-aluminium compound, with a solid, inorganic oxide, then with a halogenating agent such as silicon tetrachloride or hydrogen chloride, and then reacting the product with a Lewis Base compound, particularly an ester and finally with titanium tetrachloride. The product obtained is combined with an organo-aluminium compound, preferably together with a Lewis Base, and used to polymerise an olefin monomer particularly propylene or mixtures of ethylene and a 1-olefin containing at least 4 carbon atoms. The catalyst system has a high activity, is stereospecific and has a lower proportion of halogen than some other catalyst systems.

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