Kraton Polymer Japan will raise Japanese domestic prices for its thermoplastic elastomers SBS (styrene‑butadiene‑styrene) and SIS (styrene‑isoprene‑styrene block copolymers) by 85 yen ($0.53) per kilogram, effective for shipments starting May 1. The price revision covers Kraton D‑series SBS, oil‑extended SBS, and SIS products. The company said the adjustment reflects rising raw material and energy costs driven by instability in the…
