Patent ID: 6326444
Filing Date: 2001-12-04
Classification: C08F,Y10S

Abstract:
A process for the preparation of polymers of alkenes by suspension polymerization in the presence of a catalyst system comprising a solid component wherein the solid component is obtained by a process consisting essentially of the reaction of an inorganic support with a metallocene complex and a compound forming metallocenium ions, whereinA) the support is prepared by reaction of an inorganic carrier with a metal compound of the formula IM.sup.1 (R.sup.1).sub.r (R.sup.2).sub.s (R.sup.3 ).sub.t (R.sup.4 ).sub.u IwhereM.sup.1 is an alkali metal, an alkaline earth metal or a metal of main group III or IV of the Periodic Table,R.sup.1 is hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl, alkylaryl or arylalkyl each having 1 to 10 carbon atoms in the alkyl radical and 6 to 20 carbon atoms in the aryl radical,R.sup.2 to R.sup.4 are each hydrogen, halogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl, alkylaryl, arylalkyl, alkoxy or dialkyl-amino each having 1 to 10 carbon atoms in the atoms in the alkyl radical and 6 to 20 carbon atoms in the aryl radical,r is an integer from 1 to 4 ands, t and u are integers from 0 to 3 the sum r+s+t+u corresponding to the valency of M.sup.1,and subsequent removal of excess metal compound of the formula I andB) the material obtained according to A) is reacted with a metallocene complex in its metal dihalide form and a compound forming metallocenium ions selected from the group consisting of boron containing strong, neutral Lewis acids, ionic compounds having Lewis acid cations and ionic compounds having Bronsted acids as cations.