Patent ID: 6576727
Filing Date: 2003-06-10
Classification: C08F

Abstract:
A catalyst system comprisingA) a rare earth alcoholate (I), a rare earth carboxylate (II), a complex compound of rare earths with diketones (III) and/or an addition compound of the rare earth halides with an oxygen or nitrogen donor compound (IV), of the following formulae: (RO)3Mâ€ƒâ€ƒ(I) (Râ€”CO2)3Mâ€ƒâ€ƒ(II) â€ƒand MX3.y donorâ€ƒâ€ƒ(IV), B) an aluminum trialkyl, a dialkylaluminum hydride of formula (V) and/or an alumoxane of formulae (VI) to (VII): Al(H)x(R1)3-xâ€ƒâ€ƒ(V) â€ƒwherein in the formulae the radicals R, which may be the same or different, represent an alkyl radical having C1-C20, M represents a trivalent rare earth element having an atomic number from 57 to 71, X represent chlorine, bromine or iodine, x represent 0 or 1, y represents from 1 to 6, and n represents from 1 to 50, the radicals R1, which may be the same or different, represent an alkyl radical having C1-C10, C) an additional Lewis acid, and D) an inert, particulate, inorganic or organic solid having a specific surface area greater than 10 m2/g (BET) and a pore volume of from 0.3 to 15 ml/g and, where carbon black is used, additionally having a DBP adsorption of from 10 to 300 ml/100 g, wherein the components A, B, and C are applied to the component D, and, additionally, a co-catalyst applied to an inorganic or organic support material wherein said co-catalyst applied to an inorganic or organic support material is used in amounts of from 0.1 to 50 wt. %, based on the amount of fixed or fluidized bed.