Patent ID: 6028149
Filing Date: 2000-02-22
Classification: C08F

Abstract:
Procedure for the preparation of a solid catalyst component which is active in the polymerization of olefins, consisting of the steps:a) contacting a silylated silica support with a solution consisting of Mg-dihalide or Mg-alkyl-halide or a mixture of both in a polar solvent and Ti-alkoxide or Ti-halogen-alkoxide or a mixture of both, optionally in the presence of Ti-tetrahalide and optionally drying the resultant product;b) contacting the product obtained in a) with Mg-dialkyl or Mg-alkyl-halide or a mixture of both, optionally in the presence of Lewis base;c) halogenating the product obtained in b) by contact with one or more halogenating agents and optionally drying or siphoning the resultant product;d) titanating the product obtained in c) with Ti-tetrahalide in the presence of Lewis base; ande) recovering the solid catalyst component from the reaction products of step d).