| http://www.w3.org/ns/prov#value | - The known aluminoxane may be specifically represented by the following formula ##STR130## wherein R is a hydrocarbon group such as methyl group, ethyl group, propyl group or butyl group, preferably methyl group or ethyl group, particularly methyl group, and m is an integer of not less than 2, preferably an integer of 5 to 40.
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