新型端氨基聚醚的合成

Synthesis of a new polyoxyalkyleneamine

用一种新的方法合成了具有特定结构的高活性端氨基聚醚 ,首先将双乙烯酮与聚醚反应生成乙酰乙酸酯类 ,再将乙酰乙酸酯类与胺反应生成具有氨基丁烯酸酯基团的端氨基聚醚。

A novel polyoxyalkyleneamine with specific structure and high reaction activity used in sprayed polyurea elastomer was synthesized. There are two steps in the synthesis. The first is that polyol polyfunctional is obtained through diketene reacting with polyols and acetoacetic esters as intermediate.The second is polyfunctional acetoacetic esters reacting with aliphatic or aromatic monoamines or polyamine to form the corresponding polyfunctional amino crotonates. The conditions for the reaction were selected.