Akzo Nobel N.v.

Paul D Jones

Dennis B Malpass

Gregory M Smith

Elliot I Band

Barbara L Hudock

A catalytically active aluminoxane can be synthesized from a precursor formed by the combination of at least one trialkylaluminum compound and at least one organoaluminum compound containing a carbon-oxygen bond therein, such as an alkoxy group-containing organoaluminum compound of the formula (CH.sub.3).sub.2 Al--O--R, where R is alkyl.

Aluminoxane synthesis employing reduced amount of trialkylaluminum

Hydrocarbon solutions of a dialkylmagnesium compound having reduced viscosity contain: (a) a hydrocarbon solvent; (b) a dialkylmagnesium compound normally soluble in hydrocarbon solvents; and (c) an effective viscosity reducing amount of a compound selected from the group consisting of a compound having silicon-oxygen bonding, a compound having silicon-nitrogen bonding, and mixtures thereof. Representative viscosity reducing agents include: tetraalkylorthosilicate compounds, such as those of the general formula Si(OR).sub.4, where R is an alkyl group containing from 1 to about 4 carbon atoms, as exemplified by tetraethylorthosilicate; alkylsilazane compounds, including a hexaalkyldisilazane compound containing from 1 to about 4 carbon atoms in the alkyl groups therein as exemplified by hexamethyldisilazane; and silicone oil.

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Paul D Jones