关于聚氨酯复鞣填充剂的探讨

EXPLORATION OF POLYURETHANE FOR RETANNING-FILLING IN LEATHER INDUSTRY

根据聚氨酯复鞣填充剂原料的反应特点，讨论了采用含氮扩链剂制备阳离子聚氨酯的原理及改性方法，以及采用含氨基和羧基化合物制备两性聚氨酯的困难，提出了利用异氰酸酯反应的新思路．

ccording to the reactive characteristics of polyurethane (PU) retanning agent, the principle and modified methods were discussed for preparation of cationic PU with nitrogen contained chain extenders. The difficulty in synthesis of ampholitic PU with aminoand carboxylic compounds was explained. A new way for synthesis of ampholitic PU is advanced.