摘要
以马来酸酐和丙烯酸为单体 ,以过硫酸钠为引发剂 ,以亚硫酸氢钠为还原剂 ,采用水溶液聚合法 ,合成了用作洗衣粉代磷助剂的马来酸酐 -丙烯酸共聚物。m(马来酸酐 )∶m(丙烯酸 ) =1∶2 ,引发剂和还原剂分别为单体质量的 4.0 %和 1.9% ,聚合反应温度 90℃ ,保温 1h。产物为黏度较低的透明液体 ,分散性好 ,色泽浅 ,螯合力为 5
Sodium persulfate being initiator and sodium hydrosulfite being reducer,aqueous solution polymerization of maleic anhydride and acrylic acid was applied to synthesize the copolymer, which can be used as STPP substitute in laundry powder.The weight ratio of maleic anhydride to acrylic acid was 1∶2.Weights of initiator and reducer were respectively 4.0% and 1.9% the weight of monomers.Polymerization was carried out at 90 ℃ and continued for 1 h.The product was a transparent liquid of low viscosity and pale colour.It had good dispersivity and the value of chelating power was 518 mg CaCO 3/g.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2001年第8期487-489,共3页
Fine Chemicals
关键词
马来酸酐-丙烯酸共聚物
水溶液聚合
引发剂
还原剂
洗衣粉
助剂
合成
maleic anhydride-acrylic acid copolymer
aqueous solution polymerization
initiator
reducer
STPP substitute in laundry powder