申请人:Showa Denko K.K.
公开号:EP2238970A1
公开(公告)日:2010-10-13
An object of the present invention is to provide emulsified skin external preparations and cosmetics which contain a branched acyl carnitine and have excellent emulsion stability. An emulsified skin external preparation according to the present invention includes 0.01 to 10% by mass of a carnitine derivative represented by the following Formula (1) and/or a carnitine derivative salt represented by the following Formula (2), and 0.01 to 20% by mass of a nonionic surfactant.
In Formula (1), R1 and R2 are each independently a C1-18 optionally branched, saturated or unsaturated aliphatic hydrocarbon group. In Formula (2), R1 and R2 are the same as in Formula (1), X- is a specific anion and Y+ is a specific cation.
本发明的一个目的是提供含有支链酰基肉碱且具有优异乳化稳定性的乳化皮肤外用制剂和化妆品。根据本发明的乳化皮肤外用制剂包括下列式(1)所表示的肉碱衍生物和/或下列式(2)所表示的肉碱衍生物盐,以及非离子表面活性剂,其质量百分含量分别为0.01至10%和0.01至20%。在式(1)中,R1和R2各自独立地是C1-18的可选支链、饱和或不饱和脂肪烃基。在式(2)中,R1和R2与式(1)中相同,X-是特定阴离子,Y+是特定阳离子。