| http://www.w3.org/ns/prov#value | - Useful resinous materials are exemplified by but are not limited to the following: Polyvinyl acetate, polystyrene, polyvinyl butyral, polyvinyl pyrrolidone, polycarbonate such as the material sold under the trademark Lexan, polymethylmethacrylate such as the material sold under the trademark Plexiglass", polyester resins, aminoplast resins, cellulosics such as cellulose acetate, cellulose aceta
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