Technological innovation and cost management of SANA
The technological innovation and cost management of transparent sorbitol acetal nucleating agent(SANA)for polypropylene(PP)is reviewed.SANA has been developed into the fourth generation.A series of new nucleating agents for sorbitol acetal grafting inorganic substances have been developed through grafting modification in China.The biggest feature of grafting modified nucleating agents is that they can improve not only the transparency of PP,but also the mechanical properties of PP.The main way to reduce the costs of nucleating agent is to reduce the cost of raw materials,production costs and wastes treatment costs.