Various grades of tougheners are chemically modified thermoplastic elastomer by grafting functional monomers such as maleic anhydride(MA). acrylic acid(AA), glycidyl methacrylate(GMA), styrene(St), etc. onto various base polymer. With the pertinence of the grafted groups, these products can provide excellent compatibility between the engineering resins
(PBT,ABS,PPO,PC,POM,etc.) and elastomers, and therefore greatly improve their impact strength.