Verfahren zur Herstellung eines katalytischen Systems und Verfahren zur Olefin(co)polymerisation

• Main Author: ZANDONA, NICOLA
• Format: Patent
• Language: German
• Published: 09.12.2004
• Edition: 7
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR RELEVANT APPARATUS; TRANSPORTING

A method (I) of preparing a catalyst uses (i) an organoaluminium compound of formula AlTT'T'' (II), where T, T', T'' = hydrocarbon groups optionally containing O, (ii) at least one neutral metallocene of formula (Cp)a(Cp')bMXxZz (III), where Cp, Cp' = unsaturated hydrocarbon group or (Cp') only a group derived from a metal of Group VA or VIA, and which are bonded to M and possibly to each other; derived from a transition metal, and (iii) at least one ionising agent (IV). In (III), M = Group IIIB, IVB, VB or VIB transition metal; X = halogen; Z = hydrocarbon group of formula Rt-Si(R')(R'')(R'''); R = alkyl, alkenyl, aryl, alkoxy or cycloalkyl group; R', R'', R''' = halogen or alkyl, alkenyl, aryl, alkoxy or cycloalkyl group; (a+b+x+z) = m; m = valency of transition metal; t = 0 or 1; x ≥ 1, z ≥ 0; a and/or b are not 0. In this method, (III) and (IV) are deposited on a support (V). The method comprises mixing (II) and (III) in at least one hydrocarbon solvent and adding (IV). Also claimed is a method of (co)polymerising at least one alkene comprising using a catalyst prepared according to (I).