The polyurethane prepolymer clear coatings based on PAPI and castor oil was prepared.It is a sort of moisture curable one-component polyurethane coatings, which has protection function.

• 由多异氰酸酯PAPI与蓖麻油反应制得预聚体清漆,它是一种湿固化型聚氨酯防腐涂料。