Support of silica, composite catalyst, improvement in process for polimerizacao ethylene alone or with other alpha olefins.Process for the preparation of a aperfeicoado and catalyst supported on silica

摘要

Silica support and ethylene polymerization catalyst made therewith wherein the silica support has been dried at low temperature and treated with selected hydro silane compounds in the presence of a base to chemically anchor the hydrosilane compound to the silica support. A chromocene compound is deposited on the thus prepared support. Processes for preparing and using the support.