polyvinyl butyral

noun

, Chemistry.

1. a white, water-insoluble, polyvinyl acetal made with butyraldehyde, used chiefly as an interlayer in the manufacture of safety glass.

Word History and Origins

Origin of polyvinyl butyral¹

First recorded in 1940–45

Example Sentences

Usually, glass floors are made of tempered, laminated glass held together with polyvinyl butyral, or PVB, the same binder as in car windshields, or SentryGlas, an even stronger interlayer, Mr. Hopkins said.

From Wall Street Journal