FyrolTM HF-4 is an all-phosphorus additive flame retardant recommended for use in the Automotive MVSS302 and furniture California Technical Bulletin 117 flammability tests. Its superiority is demonstrated in low discoloration. Foams containing this product exhibit good compression set and IFD properties. This additive has low volatility and good processing characteristics. FyrolTM HF-4 is a non-halogen, phosphorus-based flame retardant commercially used in flexible polyurethane foams. It is a clear transparent, non-viscous liquid with low scorch properties. Its superiority is demonstrated in low discoloration, excellent hydrolytic stability, low volatility, low fogging and processing characteristics which enable its incorporation into foam formulations with little or no effect on foam processing.

Application
Flexible Polyurethane foams