An additive comprising an active; the interfacial polymerization reaction product of a (poly)isocyanate and a polyamine; a copolymer having maleic anhydride-based repeat units and either or both of olefinic or styrenic-based repeat units; wherein at least a portion of the maleic anhydride-based repeat units are neutralized. A method of preparing an additive comprising providing an oil phase comprising an active, a solvent, a (poly)isocyanate; providing an aqueous phase comprising water and an emulsifier; mixing the oil phase and the aqueous phase to provide an emulsion; providing a polyamine to the emulsion; providing an aqueous dispersion or solution comprising a copolymer having maleic anhydride-based repeat units and either or both of olefinic or styrenic-based repeat units; wherein at least a portion of the maleic anhydride-based repeat units are neutralized; and cofeeding the emulsion and the aqueous dispersion or solution to a spray dryer.