Process for the preparation of oligomeric aluminoxanes
AssigneeHoechst Aktiengesellschaft
InventorsWalter Kaminsky, Heinrich Hahnsen
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Abstract
The present invention relates to a process for the preparation of oligomeric alkylaluminoxanes of the general formulae: ##STR1## in which R=C.sub.1 -C.sub.6 -alkyl, preferably methyl, and n=2-40, preferably 10-20, by reacting aluminum salts containing water of crystallization, preferably aluminum sulfate containing water of crystallization, with an aluminum trialkyl, preferably aluminum trimethyl. Aluminoxanes of this type can be used as a catalyst component in the preparation of high-activity, homogeneous Ziegler catalysts.
Claims12
A process for the preparation of oligomeric, linear and/or cyclic alkylaluminoxanes of the formulae:
- ##STR7## in which n=2 to 40 and R=C.sub.1 -C.sub.6 -alkyl, which comprises reacting, with the elimination of an alkane, an aluminum trialkyl dissolved in an inert aliphatic or aromatic solvent at temperatures between -20.degree. and 100.degree. C. with an aluminum salt containing water of crystallization.
Dependencies are inferred from the claim text.