C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 4/642 (2006.01) B01J 31/12 (2006.01) B01J 31/14 (2006.01) C08F 4/02 (2006.01) C08F 210/16 (2006.01)
Patent
CA 2174661
An ethylene copolymerization catalyst is prepared by impregnating a porous support, such as silica, with an organomagnesium compound such as a magnesium alkyl and contacting the magnesium-containing support with a silane compound which is free of hydroxyl groups, such as a tetraalkyl orthosilicate e.g. tetraethyl orthsilicate (TEOS). A transition metal component such as titanium tetrachloride is then incorporated into the support in a specific ratio to the magnesium and silane components. Activation of this catalyst precursor with a trialkylaluminum compound results in a catalyst which is effective for the production of ethylene copolymers.
Catalyseur de copolymérisation de l'éthylène préparé par imprégnation d'un support poreux, p. ex. de silice, par un composé organomagnésien tel que l'alkyle de magnésium et mise en contact dudit support avec un composé de silane exempt de groupes hydroxyle tel que l'orthosilicate de tétraalkyle ou l'orthosilicate de tétraéthyle (TEOS). Un composant d'un métal de transition tel que le tétrachlorure de titane est alors incorporé au support dans une proportion spécifique avec les composés de magnésium et de silane. En activant ce précurseur de catalyseur avec un composé de trialkylaluminium on obtient un catalyseur utilisable pour la production de copolymères de l'éthylène.
Mink Robert Ivan
Nowlin Thomas Edward
Gowling Lafleur Henderson Llp
Mobil Oil Corporation
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