Polyvinyl butyral

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Polyvinyl butyral

Names
Other names Poly(vinyl butyral) Poly[(2-propyl-1,3-dioxane-4,6-diyl)methylene]
Identifiers
CAS Number	63148-65-2 N 915977-69-4 N
ChemSpider	none
ECHA InfoCard	100.126.112
CompTox Dashboard (EPA)	DTXSID2095231
Properties
Chemical formula	(C8H14O2)n
Molar mass	Variable
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Polyvinyl butyral (or PVB) is a resin mostly 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.^[1] Trade names for PVB-films include KB PVB, GUTMANN PVB, Saflex, GlasNovations, Butacite, WINLITE, S-Lec, Trosifol and EVERLAM. PVB is also available as 3D printer filament that is stronger and more heat resistant than polylactic acid (PLA).