We also considered the extent of neutralization and the ratio of TDI and PBAGDuring the process of modification, we prepared a series of modified APU using the TMP which contains three function groups.

• 在改性阶段，用聚醚多元醇合成了系列聚醚型水性聚氨酯，并在此基础上用三官能度的三羟甲基丙烷(TMP)作为内交联剂合成了一系列的改性水性聚氨酯。