| http://www.w3.org/ns/prov#value | - For example,polyolefins can comprise polyethylenes, such as low density polyethylenes, high density polyethylenes, and linear low density polyethylenes, including polyethylenes prepared by copolymerizing ethylene with at least one C.sub.3 -C.sub.12 alpha-olefin;polypropylenes, such as atactic, syndiotactic, and isotactic polypropylene--including partially and fully isotactic, or a
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