| abstract |
Flame retardant, halogen-free thermoplastic compositions that include a styrenic block copolymer, a low-melt phosphorus-based flame retardant, having a melting temperature of no more than 170 ° C, and a mixture of phosphorus-containing solid intumescent flame retardants nitrogen. The solid intumescent flame retardant mixture includes at least two phosphoric acid salts with phosphorus and nitrogen content that synergistically improve the flame retardant properties of the compositions relative to the compositions that include other flame retardant packages. |