IFR‑OP560 Low‑VOC Reactive Phosphorus Polyol Flame Retardant for PU Automotive Interiors, Alternative to Clariant OP560 Tailored for emission‑sensitive polyurethane end‑goods, IFR‑OP560 is a non‑halogenated reactive phosphorus polyol serving as a cost‑competitive replacement for Clariant Exolit OP560. Unlike conventional additive‑type flame retardants that tend to escape from polymer matrices over service time, this liquid polyol participates in PU cross‑linking reactions and