低磷含量膦羧酸共调聚物的合成

SYNTHESIS OF PHOSPHURETTED PHOSPHONIC CARBOXYLIC ACID COTELOMER

以马来酸酐 ,丙烯磺酸钠 ,次磷酸二氢钠及过硫酸钠等为原料 ,合成了低磷含量的膦羧酸共调聚物 ,探讨了原料配比 ,反应温度 ,反应时间对合成产品阻垢性能的影响。结果表明 :当反应温度为 60℃ ,反应时间 4 h,单体配比为 :n (马来酸酐 )∶ n (丙烯磺酸钠 ) =2∶ 1 ,m ( Na H2 PO2 )∶ m ( Na2 S2 O8)∶ m ( MA+SAS) =1 0∶7.5∶ 1 0 0时 ,所合成产品对阻止 Ca CO3 、Ca3 ( PO4 ) 2 和锌盐沉积的综合性能最佳。

Phosphuretted phosphonic carboxylic acid cotelomer was synthesized by MA, SAS, NaH 2PO 2 and Na 2S 2O 8. The effects of raw material's ratio, reacting temperature and time on the anti scaling performance of the cotelomer were studied. The results proved that theoptimum synthetic condition are n(MA)∶n(SAS)=2∶1, m(NaH 2PO 2)∶m(Na 2S 2O 8)∶m(MA+SAS)=10∶ 7.5∶ 100, the reacting temperature 60 ℃ and the reacting time 4 h.