polyvinyl acetal

1. any of the class of thermoplastic resins derived by the condensation of an aldehyde with polyvinyl alcohol.
2. the slightly yellow, water-insoluble resin produced from partially hydrolyzed polyvinyl acetate and formaldehyde: used chiefly in the manufacture of lacquers, photographic film, and adhesives.
[1930-35]

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Universalium. 2010.

Look at other dictionaries:

  • polyvinyl acetal — noun : any of a group of thermoplastic resins made by condensing polyvinyl alcohol with an aldehyde and used chiefly in the form of sheets and films, molded products, coatings, and adhesives; especially : the resin made from acetaldehyde * * *… …   Useful english dictionary

  • polyvinyl formal — noun : a polyvinyl acetal resin made from polyvinyl alcohol and formaldehyde and used chiefly in insulating enamels and other coatings * * * /fawr mal/, Chem. a colorless, water insoluble, polyvinyl acetal produced from partially hydrolyzed… …   Useful english dictionary

  • polyvinyl butyral — noun : a tough flexible transparent moisture resistant polyvinyl acetal resin made from polyvinyl alcohol and butyraldehyde and used chiefly as the interlayer in safety glass and other laminated products and as a coating for textiles * * * Chem.… …   Useful english dictionary

  • polyvinyl alcohol — Chem. a colorless, water soluble, thermoplastic resin, derived by the hydrolysis of polyvinyl acetate: used chiefly as an adhesive and as a sizing agent in the manufacture of textiles, paper, and plastics. [1925 30] * * * ▪ chemical compound… …   Universalium

  • polyvinyl acetate — Chem. a colorless, odorless, nontoxic, transparent, thermoplastic, water insoluble resin used as an adhesive in certain paints and as an intermediate in the synthesis of polyvinyl acetal and polyvinyl alcohol. Also called PVA [1925 30] * * * ▪… …   Universalium

  • polyvinyl formal — /fawr mal/, Chem. a colorless, water insoluble, polyvinyl acetal produced from partially hydrolyzed polyvinyl acetate and formaldehyde, used chiefly in the manufacture of lacquers. * * * …   Universalium

  • polyvinyl butyral — Chem. a white, water insoluble, polyvinyl acetal made with butyraldehyde, used chiefly as an interlayer in the manufacture of safety glass. [1940 45] * * * …   Universalium

  • vinyl acetal — noun : polyvinyl acetal …   Useful english dictionary

  • vinyl resin — noun a thermoplastic derived by polymerization from compounds containing the vinyl group • Syn: ↑vinyl polymer, ↑polyvinyl resin • Hypernyms: ↑synthetic resin • Hyponyms: ↑polyvinyl acetate, ↑PVA, ↑ …   Useful english dictionary

  • Polyoxymethylene — Other names Poly(oxymethylene) glycol; Polymethylene glycol …   Wikipedia

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