| http://www.w3.org/ns/prov#value | - Exemplary thermoplastic materials include cellulose esters (e.g., cellulose acetate, cellulose propionate, cellulose butyrate); mixed esters of cellulose; cellulose ethers (e.g., ethyl cellulose); nylons and polymeric materials, such as polyvinyl alcohol acetals, polyvinyl chloride, polyvinyl chloride acetate, polystyral, methyl methacrylate, polyethylene, polypropylene, and other polyolefins whic
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