| http://www.w3.org/ns/prov#value | - The organoaluminum halide which is utilized in the catalyst mixture can be either a dihalide of the formula RAlX2 or aluminum sesquihalide of the formula R3 Al2 X3, wherein R is an alkyl radical containing from 1 to about 12 carbon atoms, preferably about 2 to 4 carbon atoms, and X is a halogen.
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