prov:value
| - 37,501, vinyl and vinylidene polymers and copolymers, polycarbonates, polyurethanes, polyesteramides, polyethylenes, polypropylenes, fluorinated ethylene polymers and copolymers (e.g. polytetrafiuoromethylene), cellulose derivatives, such as cellulose acetate, cellulose triacetate, composite filaments such as, for example, a sheath of polyamide around a core of polyester as described in the copend
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