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History of Polyvinyl
Butyral (PVB)
In 1903, French chemist Edouard Benedictus
accidentally broke a bottle of cellulose
acetate in his laboratory. He discovered
that upon hardening the cellulose held the
fragments of glass together. This led to
the use of cellulose as a binding agent
in the glass laminating process, and a Saint-Gobain
patent of the process followed in 1910.
Vinyls have long since replaced cellulose,
which tended to brown and become brittle
with age. Polyvinyl butyral (PVB) was first
produced commercially in 1938 and as the
most important member of the polyvinyl acetal
family of resins, is now the most common
interlayer material used around the world
for laminating purposes.
PVB is a specialty resin used primarily
as a raw material for laminated safety glass.
Plasticized PVB film is widely used as an
interlayer in laminated safety glass for
automotive and architectural applications.
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