| http://www.w3.org/ns/prov#value | - In a third embodiment, the invention is a method of nucleating a propylene copolymer comprising at least about 60 weight percent (wt %) of units derived from propylene, about 0.1-35 wt % of units derived from ethylene, and 0 to about 35 wt % of units derived from one or more unsaturated comonomers, with the proviso that the combined weight percent of units derived from ethylene and the unsaturated
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