A dilatant composition comprises (A) an o/w emulsion comprising an ionic surfactant, a water phase, and an oil phase which comprises a ceramide or a linear or branched, saturated or unsaturated C12-C32 fatty acid, wherein the oil phase is in a form of oil droplets having an average droplet size of from 0.01 to 0.2 µm; and (B) a nonionic, water-soluble polymer having an average molecular weight of at least 300,000.
The dilatant composition according to the present invention is excellent in dilatancy that its viscosity is low when left over standstill but increases abruptly when an external force of a certain intensity or higher is applied, and is useful in a wide variety of fields, e.g., cosmetic preparations such as humectants and massaging aids, shock absorbing agents and materials applied to around automotive crankcases.
一种稀释剂组合物包括:(A) 由离子型表面活性剂、
水相和油相组成的
水包油型乳液,
水相由神经酰胺或线性或支链、饱和或不饱和 C12-C32
脂肪酸组成,其中油相为平均液滴大小为 0.01 至 0.2 微米的油滴形式;以及 (B) 平均分子量至少为 300,000 的非离子型
水溶性聚合物。
本发明的稀释剂组合物具有优异的稀释性,静止时粘度较低,但在施加一定强度或更大的外力时粘度会骤然升高,可用于多种领域,如保湿剂和按摩助剂等化妆品制剂、减震剂和汽车曲轴箱周围的材料。