Eastman Butvar® B-90 Polyvinyl Butyral Resin

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Eastman Butvar® B-90 Polyvinyl Butyral Resin
Categories:	Polymer; Thermoplastic; Vinyl (PVC)
Material Notes:	Product Description: Butvar® B-90 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. Application/Uses: Binders for adhesives and structural composites Binders for inks and toners Wash primers and general metal or wood coatings Information provided by Eastman
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Physical Properties	Original Value	Comments

Density	1.10 g/cc
Volatiles	<= 5.0 %
Viscosity	13 - 17 cP	6% solids in anhydrous methanol
Molecular Weight	70000 - 100000 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
	18.5-20.5%	Hydroxyl Content
	80%	Butyryl Content

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PEATM5091 / 222285

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