| http://www.w3.org/ns/prov#value | - The copolymer (II) of claim 15 , where R is a methyl group, x is 0%, y is between 85 and 99.9%, and the backbone of the copolymer (II) is an isotactic polypropylene structure having a number average molecular weight (Mn) of at least about 10,000. 18.
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