Definition
Nucleating agent NA-21 (Aluminium hydroxybis[2,2'-methylen-bis(4,6-di-tert-butylphenyl)phosphate]) is a third-generation organophosphate nucleating agent for crystalline polymers, which is the most effective and safest PP stiffening and permeability modification additive in the world. It has the characteristics of high rigidity, high heat resistance, high transparency, high hardness, balanced horizontal and vertical shrinkage, etc. Meanwhile, it has a high crystallization rate, which can greatly shorten the molding cycle and improve the production efficiency of products. The recommended addition amount is 0.03-0.1%, which has an obvious stiffening and translucent effect.