Thursday, May 03, 2012

Polyvinyl butyral

  • Polyvinyl butyral (or PVB) is a resin usually used for applications that require strong binding, optical clarity, adhesion to many surfaces, toughness and flexibility. 
  • It is prepared from polyvinyl alcohol by reaction with butyraldehyde. 
  • The major application is laminated safety glass for automobile windshields. Tradenames for PVB-films include GlasNovations, Butacite, Saflex, S-Lec, and Trosifol.In the structure of PVB resin, there are three functional groups: butyral, hydroxyl and acetyl group. 
  • The physical properties of PVB resin can be adjusted by controlling the molecular structure of PVB.  

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