Isocyanate is a kind of important organic synthetic material, its synthetic methods primarily contain phosgenation, nitrobenzene carbonyl, dimethylcarbonate and other methods.

• 摘要异氰酸酯是一种重要的有机合成材料，它的合成方法主要有光气法、硝基苯羰化、碳酸二甲酯法等；