| http://www.w3.org/ns/prov#value | - Examples of useful plastics include olefin polymers such as polyethylene, including high-density polyethylene, polypropylene; polyvinyl halides such as polyvinyl chloride; polyvinylidene halides such as polyvinylidene fluoride; polyethylene glycol terephthalate; nylon resins, i.e., adipic acid-polyalkyleneamine reaction products; polycarbonates, i.e., phosgene polyhydroxyaryl reaction products; po
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