Eastman Butvar® B-72 Polyvinyl Butyral Resin

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Eastman Butvar® B-72 Polyvinyl Butyral Resin
Categories:	Polymer; Thermoplastic; Vinyl (PVC)
Material Notes:	Product Description: Butvar® B-72 is a thermoplastic, polyvinyl butyral resin which offers a unique combination of properties for coating or adhesive applications. The use or addition of polyvinyl butyral to a system imparts adhesion, toughness, and flexibility. PVB retains the clarity of the coating and offers reactive hydroxyl sites for crosslinking with thermoset systems. Application/Uses: Binders and structural adhesives Coatings for wood or metal substrates Structural composites and laminates Information provided by Eastman
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Physical Properties	Original Value	Comments

Density	1.10 g/cc
Volatiles	<= 3.5 %
Viscosity	170 - 260 cP
Molecular Weight	170000 - 250000 g/mol

Thermal Properties	Original Value	Comments
Glass Transition Temp, Tg	72.0 - 78.0 °C

Descriptive Properties
Appearance	White, free-flowing powder
Content	<2.5 %	Acetate Content
	17.5-20 %	Hydroxyl Content
	80%	Butyryl Content

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PEATM5087 / 222281

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