The blocking reaction of PAPI with nonyl phenol is studied. The effects of temperaure, time, solventand catalysts on blocking reaction are discussed.

• 研究了壬基苯酚与多亚甲基多苯基多异氰酸酯（PAPI）的封闭反应，探讨了温度、反应时间、催化剂、溶剂等因素对异氰酸酯封闭反应的影响。