Aluminoxane catalyst activators derived from dialkylaluminum cation precursor agents, processes for making same, and use thereof in catalysts and polymerization of olefins

A composition having one of the following structures:

• wherein is a bulk aluminoxane (AO) structure, each RB, RP, and R2 is independently a hydrocarbyl group having up to about 20 carbon atoms, and each Y is a pseudo halide radical, an alkoxide radical, an aryloxide radical, an alkyl substituted amide radical, an aryl substituted amide radical, a siloxy radical, a boronoxy radical, a diaryl boronoxy radical, or a halogenated diaryl boronoxy radical;
• and a carrier, wherein said carrier is attached to said bulk aluminoxane structure.