Patent ID: 6489410
Filing Date: 2002-12-03
Classification: C08F

Abstract:
A method of producing a supported transition metal containing catalyst suitable for polymerizing olefinic materials, said method consisting essentially of the steps of:(a) treating a support containing (i) at least one metal and (ii) at least one metal oxide, wherein the metal of each (i) and (ii) is selected from the group consisting of Group 3-10 transition metals and the metal in (i) is distributed throughout the support with an alkylating reagent; and (b) treating the reaction product from (a) with a halogenating reagent having the formula RmXn wherein X is radical selected from the group consisting of chlorine, fluorine, bromine and mixtures thereof and R is a radical selected from the group consisting of H, C6-26 aryls, C6-20 arylalkyls, C6-20 alkylaryls, C1-20 alkyl, boron, organic acids, phosphorus, thionyl, sulfuryl, carbonyl, nitrosyl, silicon, alkylsilicon, aluminum, alkylaluminum, ammonium silicates and mixtures thereof, wherein m is the valence of R and m=n and wherein R can be absent.