Polyvinyl butyral is one of the most important polyvinyl acetals; its properties depend on the polymer composition. The vinyl butyral group inftuences: Generally speaking, PVB is very elastic and has good tensile strength. A combination of PVB with aminoformaldehyde, phenol formaldehyde, alkyd and epoxy resins is generally used and leads to plasticisation with these binders. The solubility of PVB depends to a large extent on the molecularstructure. PVB is soluble in lower alcohols, glycol ...