阳离子水性聚氨酯固色剂LH的合成与应用  

Synthesis and application of cationic waterborne polyurethane fixing agent LH

作　　者：陆振伟[1] 刘晶晶[1] 胡啸林[1,2] 蔡再生[1] 杨勇[1,2] 

机构地区：[1]生态纺织教育部重点实验室(东华大学),上海201620 [2]南通大学化学与化工学院,江苏南通226007

出　　处：《印染助剂》2009年第9期35-38,共4页Textile Auxiliaries

摘　　要：聚醚2 000和聚醚600按一定比例混合,加入二羟甲基丙酸抽真空,在80℃滴加甲苯-2,4-二异氰酸酯合成预聚体,然后将预聚体反滴到二乙烯三胺丁酮溶液中,通过环氧氯丙烷与二乙烯三胺的反应引入阳离子基团,用亚硫酸氢钠在4℃进行封端,用冰醋酸调节pH值,加水乳化,得到阳离子改性聚氨酯乳液.对合成过程中的时间、温度、物料比等参数进行了讨论,合成产品用于涤、棉、锦纶等染色织物的固色整理,结果表明:该固色剂有效地提高了各项染色牢度.The cationic waterborne polyurethane prepolymer was synthesized with polyether 2 000 and polyether 600 in certain proportion,dimethylol propionic acid was added and vacuumized,then toluene-2,4-di-isocyanatotoluene was dropwised at 80 ℃.Then the prepolymer was dripped into the solution mixed with di-ethylenetriamine and butanone,cationic group was introduced by the reaction of epichlorohydrin with diethylene-triamine,terminated at 4 ℃ with sodium bisulfite,regulated pH value with acetic acid,emulsified with water, the cationic modified waterborne polyurethane emulsion was prepared. The parameters including time, temperature and material ratio of the synthesis were discussed, and the product was used in fixation of polyester, cotton and nylon dyed fabric. The results showed that this fixing agent effectively improved the various fastness.

关 键 词：阳离子 水性聚氨酯 封端 固色 

分 类 号：TQ610.44[化学工程—精细化工]