| http://www.w3.org/ns/prov#value | - The catalyst system of claim 1 wherein the aluminum compound is represented by the formula: Al(X)a (Y)b (Z)c wherein Y is R, Y is OR and Z is H or halogen; a is 0-3, b is 0-3, c is 0-3, and a+b+c=3; and R is an alkyl or aryl group having from one to eight carbon atoms. 5.
|
