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Exolit AP 740 is a white free flowing powder. It is a non-halogenated additive flame retardant based on ammonium polyphosphate which develops its effectiveness through phosphorus/nitrogen synergism. Exolit AP 740 differs in its mode of action from chlorine or bromine containing flame retardants by achieving its effect through intumescence. The flame retarded material foams on exposure to flame. The carbon foam layer so formed protects the polymer through its heat-insulating effect and reduces further oxygen access. Benefits Non-halogenated additive flame retardant system based on ammonium polyphosphate which develops its effectiveness through phosphorus/nitrogen synergism and intumescence May be used in a range of thermoset resins, especially unsaturated polyester resin, acrylic resins, epoxy or phenolics Suitable both for coatings and reinforced materials Low smoke density In unsaturated polyester gel coats, important standards like DIN EN 13501-1 or DIN 5510 S4 SR2 ST2, EN 45545-2 can be passed Can be used alone or in combination with synergists like aluminium hydroxide in composites Very effective in methacrylate-styrene dissolved polyester resins Non-halogenated flame retardant with favorable environmental and health profile
