Styrene-Butadiene Copolymer (K-Resin / SBC)

K-resin type SBC is a high-styrene butadiene-styrene copolymer (typically around three-quarters styrene) that combines glass-like clarity and surface hardness with better impact strength than crystal PS. It processes on standard styrenic equipment by injection, extrusion, and blow molding.

Industry Applications

Transparent packaging, bottles and lids, toys, stationery, hangers, medical disposables, and blends with polystyrene or other styrenics to raise toughness without losing clarity.