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    • 10. 发明授权
    • Surface active polymeric surfactants containing side chain hydrophobes
    • 含有侧链疏水物的表面活性聚合物表面活性剂
    • US4525526A
    • 1985-06-25
    • US554510
    • 1983-11-23
    • Ritchie A. WesslingDale M. Pickelman
    • Ritchie A. WesslingDale M. Pickelman
    • C08F8/44C08F26/00
    • C08F8/44
    • Substantially linear, synthetic, water-soluble or water-dispersible cationic interpolymeric surfactants which are particularly useful for reducing the surface tension of an aqueous medium; such surfactants having a critical micelle concentration of from 0.01 to about 10 percent in water at 25.degree. C., a charge density of from about 1 to 5 meq/g and a number average molecular weight of from about 500 to about 40,000 and being composed of a plurality of nonionic hydrophobic units and pH independent hydrophilic cationic units randomly distributed in the backbone of such interpolymeric surfactants and wherein an average molecule of such surfactant contains from 1 to about 5 hydrophilic cationic units substituted with a pendant hydrophobic group, such hydrophobic group being an aralkyl group of from about 8 to about 20 carbon atoms are prepared by (1) aqueous, emulsion polymerization of a mixture of ethylenically unsaturated nonionic monomers at least one of which contains an ion-forming group in the presence of a copolymerizable monomeric surfactant to form a latex, (2) reacting the resulting latex with a coreactant to form a water-soluble cationic interpolymer.
    • 特别适用于降低水性介质表面张力的基本线性,合成的,水溶性或水分散性的阳离子互聚表面活性剂; 这种表面活性剂在25℃的水中的临界胶束浓度为0.01至约10%,电荷密度为约1至5meq / g,数均分子量为约500至约40,000,并且组成 多个非离子疏水单元和pH不依赖的亲水阳离子单元,其随机分布在这种互聚表面活性剂的主链中,并且其中平均分子表面活性剂含有1至约5个被侧基疏水基取代的亲水性阳离子单元, 通过以下方法制备约8至约20个碳原子的芳烷基:(1)在可共聚的单体表面活性剂存在下,其中至少一种含有离子形成基团的烯键式不饱和非离子单体的混合物的水性乳液聚合, 形成胶乳,(2)使所得胶乳与共反应物反应以形成水溶性阳离子互聚物。