申请人:STEPAN CO
公开号:WO2020185513A1
公开(公告)日:2020-09-17
Processes for making reactive surfactants are disclosed. In one such process, a fatty epoxide, a glycidyl ether, or a combination thereof is reacted with an olefin-functional nucleophile to produce an olefin-functional hydrophobe. The olefin-functional hydrophobe is reacted with ethylene oxide, propylene oxide, butylene oxides, or a combination thereof to produce an alkoxylate. Optionally, the alkoxylate is converted to the corresponding sulfate, phosphate, or maleate. Surfactant compositions comprising the reactive surfactants made by these processes are also described. The invention includes polymerizable mixtures comprising an acrylic monomer and the surfactant compositions as well as aqueous acrylic latex emulsions and coatings produced from the emulsions. The reactive surfactants deliver stable latex emulsions with reduced tendency for surfactant migration or excessive foaming. Coatings from the emulsions have improved wet adhesion, scrub resistance, and water resistance.
揭示了制备反应性表面活性剂的方法。在其中一种方法中,脂肪环氧化物、环氧乙醚或二者的组合物与烯烃官能核糖核发生反应,从而产生烯烃官能亲水基。将烯烃官能亲水基与环氧乙烷、丙烯酸丙烯酯、丁烯氧化物或二者的组合物发生反应,制备烷氧基化物。可选地,将烷氧基化物转化为相应的硫酸盐、磷酸盐或马来酸盐。还描述了由这些方法制备的含有反应性表面活性剂的表面活性剂组合物。该发明还包括包含丙烯酸单体和表面活性剂组合物的可聚合混合物,以及由这些乳液制备的水性丙烯酸乳胶乳液和涂料。反应性表面活性剂可提供稳定的乳胶乳液,减少表面活性剂迁移或过度起泡的倾向。从这些乳液中制备的涂料具有改善的湿附着力、耐擦洗性和耐水性。