Flame retardant polyester blends
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- Patent
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Disclosed are flame retardant poly(butylene terephthalate) resins comprising
(i) at least one polyester resin; and
(ii) a flame retardant effective amount of a mixture comprising (a) a polyphosphonate ester, (b) an ammonium polyphosphate, and (c) a halogenated benzosulfonate.