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    • 93. 发明授权
    • Solid compositions containing amine oxide-maleic acid salts
    • 含有氧化胺 - 马来酸盐的固体组合物
    • US5399296A
    • 1995-03-21
    • US231417
    • 1994-04-22
    • Thomas J. WierengaRaymond D. Young
    • Thomas J. WierengaRaymond D. Young
    • C07C57/145C07C291/06C11D1/75C11D3/20C07C59/245C07C291/00
    • C07C291/06C07C57/145C11D1/75C11D3/2082
    • Disclosed are solid, concentrated, amine oxide surfactant compositions containing amine oxide- maleic acid salts. The molar ratio of maleic acid to amine oxide in such salts is about a 1:1. The salts are soluble in water at 25.degree. C. at a pH of above the pKa of the amine oxide. Also disclosed is a process for preparing such solid amine oxide surfactant compositions, which process comprises admixing maleic acid and amine oxide surfactants in at least about a 1:1 molar ratio, at a pH of at least about 1 units less than the pKa of the amine oxide, to thereby form a visible precipitate therein. The precipitate is separated from the mixture, preferably by mechanical means, and dried. The dried precipitate is a maleic acid-amine oxide salt which can be incorporated into cleaning products, especially solid or granular cleaning products, as a solid, concentrated source of amine oxide surfactant.
    • 公开了含有氧化胺 - 马来酸盐的固体,浓缩的氧化胺表面活性剂组合物。 这些盐中马来酸与氧化胺的摩尔比约为1:1。 该盐在25℃,在高于氧化胺pKa的pH下可溶于水。 还公开了一种制备这种固体氧化胺表面活性剂组合物的方法,该方法包括以至少约1:1的摩尔比混合马来酸和氧化胺表面活性剂,其pH至少比单独的pKa小至少约1单位 氧化胺,从而在其中形成可见的沉淀物。 将沉淀物从混合物中分离,优选通过机械方法分离并干燥。 干燥的沉淀物是马来酸 - 氧化胺盐,其可以并入清洁产品,特别是固体或颗粒状清洁产品中,作为固体浓缩的氧化胺表面活性剂源。