Organoaluminoxy product, catalyst systems, preparation, and use

Claim 1

A process for preparing a solid catalyst system comprising reacting an organoaluminoxane and an ene-ol compound wherein said organoaluminoxane is represented by the formula ##STR2## wherein each R is a hydrocarbyl group containing 1 to 12 carbon atoms and n is a number in the range of from 2 to 50;and wherein said ene-ol compound contains at least one hydroxy group, at least one carbon-carbon double bond, and contains from 3 to 24 carbon atoms, (b) combining the product of step (a) with at least one transition metal-containing catalyst to form a catalyst system, (c) prepolymerizing said catalyst system in a liquid in the presence of at least one olefin containing 2 to 18 carbon atoms, (d) separating the resulting solid catalyst from the liquid and the components contained in the liquid to yield said solid catalyst system, wherein said at least one transition metal-containing catalyst is represented by the formula ML.sub.x, wherein M is a Group IVB or VB transition metal, x is the valence of the transition metal, and each L is individually selected and is a hydrocarbyl group containing 1 to 12 carbon atoms, alkoxy group containing 1 to 12 carbon atoms, aryloxy group containing 6 to 12 carbon atoms, halogen, hydrogen, amido, or a ligand containing at least one cyclopentadienyl-type group, and wherein said cyclopentadienyl-type group is unsubstituted cyclopentadienyl, substituted cyclopentadienyl, unsubstituted indenyl, substituted indenyl, unsubstituted fluorenyl, or substituted fluorenyl, wherein the substituents are hydrocarbyl groups containing 1 to 12 carbon atoms, alkoxy groups containing 1 to 12 carbon atoms, silyl groups, alkyl halide groups where the alkyl contains 1 to 12 carbon atoms, or halogen.