螯合分散剂原料HEDPA的性能、合成及其应用

The properties and synthesis and of applications HEDPA as law material for chelating dispersants

对HEDPA的性能、合成机理、合成工艺、产品检测及应用进行了一系列的研究,确立了合成HEDPA的最佳工艺:量比n(PCl3)∶n(CH3COOH)为1∶4～1∶4.2,HEDPA的合成转化率可为89%￣91%,w(亚磷酸)<1.5%.经试验,生产的HEDPA用于螯合分散剂有优异的效果.与其他合成工艺相比,产品质量高,成本相对较低,值得推广.

The properties of HEDPA, synthetic mechanism and procedure, product tests and applications were studied systematically, and an optimized synthetic process for HEDPA was set up. PCl3 reacted with CH3COOH at mol. ratio of 1∶4~1∶4.2 to give HEDPA contg. < 1.5 wt % phosphorous acid at transfer ratio of 89%~91%. The product was used for chelating dispersants to result in excellent effects. The product quality was high and the production cost was low as compared to the other processes. The new process was worthy of application.