MBS (Methyl Methacrylate-Butadiene-Styrene) copolymer is a specialty impact modifier used primarily in rigid PVC applications to enhance toughness and impact resistance while maintaining transparency. It is ideal for clear PVC products such as bottles, sheets, films, and packaging materials. Also applied in PVC profiles, pipes, and fittings to improve low-temperature impact performance and processability. Provides excellent balance of clarity, weather resistance, and mechanical properties in engineering plastics and adhesives.