| abstract |
A synergistic flame retardant combination includes (a) a phosphorus salt having the formula (I) wherein M<d+> is a metal ion or an onium ion; d is 1, 2, 3, or 4 according to the identity of M and its oxidation state; each occurrence of R<1> and R<2> is independently C1-C18 hydrocarbyl; and each occurrence of m and n is independently 0 or 1; and (b) a phosphine compound selected from trihydrocarbylphosphines, trihydrocarbylphosphine oxides, and combinations thereof. Polymer compositions utilizing the flame retardant combination are described. |