Assertion: polyvinylidene fluoride | /r/HasProperty | plastic
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text: Vinyl fluoride (H 2 C=CHF), also called fluoroethylene, a colourless, flammable, nontoxic, chemically stable gas belonging to the family of organohalogen compounds and used as the starting material in making polyvinyl fluoride, a plastic used in films for weather-resistant coatings of structural materials.