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    • 6. 发明专利
    • Surface-treated powder and cosmetic compounded with the powder
    • 表面处理粉末和化妆品与粉末混合
    • JP2014101279A
    • 2014-06-05
    • JP2012252163
    • 2012-11-16
    • Daito Kasei Kogyo Kk大東化成工業株式会社
    • NISHIMOTO KENJITANAKA TAKUMI
    • A61K8/29A61Q1/02A61Q1/12A61Q17/04C01G23/04C07C233/36
    • PROBLEM TO BE SOLVED: To provide a surface-treated powder having good adhesion and feeling to the skin and excellent washability, and a cosmetic containing it.SOLUTION: A surface-treated powder is characterized in that a pigment powder is surface-treated with a cationic organic compound. The cationic organic compound is preferably a cationic copolymer like vinylpyrrolidone/N,N-dimethylaminoethyl methacrylic acid copolymer diethyl sulfate salt or a cationic compound like ethylsulfuric acid lanolin fatty acid amide propylethyldimethylammonium. In addition, the surface-treated powder preferably has a zeta potential value in the range of +1 mV to +60 mV at the pH of the neutral region. It has excellent dispersibility in water and a cosmetic compounded with the powder is excellent in feeling when applied to the skin and adhesion to the skin.
    • 要解决的问题:提供一种表面处理粉末,其具有对皮肤的良好粘附和感觉以及优异的可洗性,以及含有它的化妆品。溶液:表面处理粉末的特征在于,将颜料粉末用 阳离子有机化合物。 阳离子有机化合物优选为阳离子共聚物,如乙烯基吡咯烷酮/ N,N-二甲基氨基乙基甲基丙烯酸共聚物二乙基硫酸盐或阳离子化合物如乙基硫酸羊毛脂脂肪酸酰胺丙基二甲基铵。 此外,表面处理粉末优选在中性区域的pH为1mV至+ 60mV的范围内具有ζ电位值。 它在水中具有优异的分散性,并且与粉末混合的化妆品在施用于皮肤和对皮肤的粘附时具有优异的感觉。