C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 4/02 (2006.01) B01J 27/12 (2006.01) B01J 27/125 (2006.01) B01J 37/02 (2006.01) C08F 4/6592 (2006.01)
Patent
CA 2720733
Methods of forming supported catalyst systems, supported catalyst systems and polymerization processes utilizing the supported catalyst systems are described herein. The methods generally include providing an inorganic support material and contacting the inorganic support material with a support solvent to form a support solution. The methods further include contacting the support solution with a fluorine containing compound represented by the formula A1F p X3.p B q to impregnate the fluorine containing compound within the inorganic support material and form an intermediate, wherein X is selected from Cl, Br and OH', B is H2O, p is selected from 1 to 3 and q is selected from O to 6. hi addition, the methods include drying the intermediate to remove the solvent therefrom and heating the intermediate at a temperature of at least about 300°C to form an impregnated support and contacting the impregnated support with a transition metal compound to form a supported catalyst system, wherein the transition metal compound is represented by the formula [L]m M[A]n; wherein L is a bulky ligand, A is a leaving group, M is a transition metal and m and n are such that a total ligand valency corresponds to the transition metal valency.
L'invention porte sur des procédés de formation de systèmes de catalyseurs sur support, sur des systèmes de catalyseurs sur support et sur des processus de polymérisation utilisant lesdits systèmes. Les procédés consistent d'une manière générale à obtenir un matériau support inorganique et à le mettre en contact avec un solvant support pour former une solution support. Les procédés consistent de plus à mettre la solution support en contact avec un composé fluoré de formule AlFpX3.pBq pour en imprégner le composé fluoré se trouvant dans le matériau support inorganique et former un intermédiaire, X étant choisi parmi Cl, Br et OH', B étant H2O, p étant de 1 à 3 et q étant de 0 à 6. Les procédés consistent en outre à faire sécher l'intermédiaire pour en extraire le solvant, à porter l'intermédiaire à une température d'au moins 300°C pour former un support imprégné, et à mettre en contact le support imprégné avec un métal de transition pour former un système de catalyseur sur support. Le métal de transition présente la formule [L]mM[A]n; dans laquelle: L est un ligand volumineux, A est un groupe partant, M est un métal de transition et m et n sont tels que la valence totale du ligand corresponde à la valence du métal de transition.
Fina Technology Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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