一种封端型水性聚氨酯固色剂的合成及应用

Synthesis and Application of a Blocked Waterborne Polyurethane Fixing Agent

介绍了一种亚硫酸氢钠封端的聚酯型固色剂的合成和应用。使用长碳链脂肪酸聚酯二醇和带支链结构的聚酯二醇作软段,在保证产品湿摩擦牢度的同时提高了产品成膜后的柔软度。使用N,N-二(2-羟乙基)-2-氨基乙磺酸钠盐BES作亲水基,采用先扩链、后封端工艺,乳液粘度低、粒径均匀、存储稳定。

The article described the synthesis and application of a polyester type fixing agent with sodium bisulfate blocked. With long chain fatty acid polyester diol and branched chain polyester diol as soft segments,the wet rubbing fastness and softness of the product film were both improved. N, N-Bis(2-hydroxyethyl)-2-aminoethanesulfonic acid sodium salt BES was used as hydrophilic radical. This experiment was carried out with chain expansion first and then chain blocked. The emulsion has low viscosity, particle size uniform and stable storage.