Patent ID: 6043180
Filing Date: 2000-03-28
Classification: C08F

Abstract:
A supported catalyst comprising:A) a supported catalyst component comprising a support material and an alumoxane, which component contains 15 to 40 weight percent of aluminum from said alumoxane (based on the total weight of the support material and alumoxane), said supported catalyst component being obtained bya) heating said support material and alumoxane under an inert atmosphere or under less than atmospheric pressure at a temperature of from about 85 to about 250.degree. C. for a period sufficient to fix said alumoxane to the support material, to provide a supported catalyst component; wherein not more than about 10 percent aluminum from said alumoxane and present in said supported catalyst component is extractable after stirring for one-hour in toluene at 90.degree. C. using 10 ml toluene per gram of said supported catalyst component, filtering and washing twice with 5 ml of toluene per g of said supported catalyst component at 90.degree. C.; andB) a transition metal compound.