Thin-film Evaporation is economical and efficacious technique in usual technique for separating TDI from polyurethane prepolymer.

• 薄膜蒸发技术在几种常见的降低聚氨酯固化剂中游离甲苯二异氰酸酯(TDI)的方法中,是最经济有效的。