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Butonal NX 4190 is a mechanically stable latex polymer dispersion that is readily incorporated into cationic asphalt emulsions through addition to the soap solution (batch process) or co-milling (continuous process). Butonal NX 4190 provides excellent cohesion and adhesion properties with aggregate and significantly enhances the residue properties such as Forced Ductility- Toughness and Tenacity- Torsional Recovery and Softening Point over onventional cationic polymers.