Polyvinyl butyral CAS NO.63148-65-2

This synthetic organic polymer is a member of the polyvinyl acetal family of resins produced commercially though the reaction of polyvinyl alcohol wit…

This synthetic organic polymer is a member of the polyvinyl acetal family of resins produced commercially though the reaction of polyvinyl alcohol with butyraldehyde. Polyvinyl butyral (PVB) properties including high tensile strength, impact resistance,transparency and elasticity. PVB resins are used in general industrial and wood coatings,wash primers,ceramic substrates,composites and structural adhesive film interlayer in laminated safety glass (LSG) in automobile windshields and architectural safety glass. APPLICATIONS Pringting inks Adhesives Industrial coatings/ lacquers Transfer paper Ceramic binders Wash primers Safety glass interlayer FEATURE Excellent toughness and flexibility Excellent adhesivenes Soluble inmany organic solvents Crosslinkable and compatible Colorless and transparent SPECIFICATION PROPERTY CONTENT Hydroxyl content (%) 16-24 Solution Viscosity (s)* 4-200 Volatile content (%) 3 max Acetate content (%) 0.5 max Butyral content (%) 70-85 Glass transition temperature (°C) 70-80 * 10% solids in ethanol 25°C with in No. 4 ford cup. Packing in PP-bags each containing 12.4kgs net.