| http://www.w3.org/ns/prov#value | - ins; poly(vinyl chloride); poly(vinylidene chloride); vinylidene chloride, acrylonitrile copolymers; poly(vinyl acetate); vinyl acetate, vinyl chloride copolymers; poly(vinyl acetals), such as poly(vinyl butyral); polyacrylic and methacrylic esters, such as poly(methyl methacrylate'), poly(n-butyl methacrylate, poly(isobutyl methacrylate), etc.; polystyrene; nitrated polystyrene; polymethylstyrene
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