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polyvinyl acetal

noun, Chemistry
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.
Origin
1930-1935
1930-35
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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