prov:value
| - Examples of materials are polyolefin resins, such as polyethylenes and polypropylenes; polyvinyl resins or polyvinylidene resins, such as polystyrenes, acrylate resins, polyacrylonitriles, polyvinyl acetates, polyvinyl alcohols, polyvinyl butyrals, polyvinylchlorides, polyvinyl carbazoles, polyvinyl ethers and polyvinyl ketones; polyvinyl-chloride acetate copolymers; styrene-acrylic acid copolymer
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