UPR Margins Under Pressure as Styrene Volatility Meets Weak Demand

Unsaturated polyester resin (UPR) producers have faced a difficult combination in 2026: volatile raw material costs and persistently weak downstream demand. The challenge is not simply that feedstock prices have risen, as costs have moved sharply in both directions. More important is the mismatch between the speed at which production costs can change and producers’ ability to pass those movements downstream.