Processes of producing HDI are simarized. Techniques of phosgenation and thermal decompositionare important. Factors influencing phosgenation are discussed in detail.

• 综述了六亚甲基二异氰酸酯（HDI）的制备方法，主要有光气化法和热分解法。对光气化法若干工艺因素加以讨论。