Collacral VA 64 Copolymer of vinylpyrrolidone and vinyl acetate BASF Ethylene co-terpolymers - solid (EVA, EMA) ADHESIVE >> Hot-melt Collacral VA 64 copolymer of vinylpyrrolidone and vinyl acetate Used as a raw material in remoistenable hot melt adhesives. Copolymer of vinylpyrrolidone and vinyl acetate. Used as a raw material in remoistenable hot melt adhesives.