Patent ID: 8680001
Filing Date: 2014-03-25
Classification: C08F

Abstract:
1. A process for preparing a catalyst solid for olefin polymerization comprising a finely divided support, an aluminoxane, a metallocene compound product, and an organometallic compound, wherein the process comprises: combining the finely divided support with the aluminoxane to form a modified support, and subsequently reacting a metallocene compound of formula (I), wherein M is zirconium, hafnium or titanium; X are identical or different and are each, independently of one another, hydrogen or halogen or a group —R, —OR, —OSO L is a divalent bridging group selected from the group consisting of C R T and T′ are divalent groups of the formulae (II), (III), (IV), (V), (VI) or (VII), wherein the atoms denoted by the symbols * and ** are in each case joined to the atoms of the compound of the formula (I) which are denoted by the same symbol; and R with at least one organometallic compound of formula (VIII) wherein M R R r is an integer from 1 to 3; and s and t are integers from 0 to 2, where the sum r+s+t corresponds to the valence of M to form a reaction product which is added to the modified support, wherein the finely divided support and aluminoxane are combined in suspension, and the reaction product and the modified support are contacted in suspension with the suspension medium being removed by evaporation after the reaction product is contacted with the modified support, and wherein the atomic ratio of aluminum from the aluminoxanes to M from the metallocene compounds of formula (I) ranges from 20:1 to 500:1.