A method for preparing aliphatic polythioether is provided. In the method, aliphatic polythioether is obtained by polymerization reaction using a sulfur-carbon compound and an oxygen-containing monomer as raw materials and using Lewis base as a catalyst, and the polymerization reaction is performed under a self-generated pressure at 80˜180° C. Based on the defects of the traditional preparation process of aliphatic polythioether, a bran-new synthetic routine is provided, in which a new process for preparing polythioether in one-pot reaction is achieved through oxygen-sulfur exchange reaction between the sulfur-carbon compound and the oxygen-containing monomer.
本发明提供了一种制备脂肪族聚
硫醚的方法。在该方法中,以
硫碳化合物和含氧单体为原料,以路易斯碱为催化剂,通过聚合反应得到脂肪族聚
硫醚,聚合反应在 80 ˜180°C的自生压力下进行。根据脂肪族聚
硫醚传统制备工艺的缺陷,提供了一种全新的合成工艺,通过
硫碳化合物与含氧单体之间的氧
硫交换反应,实现了一锅反应制备聚
硫醚的新工艺。