申请人:Shin-Etsu Chemical Co., Ltd.
公开号:EP1291377A1
公开(公告)日:2003-03-12
This invention provides a sterol-modified silicone compound which is low melting, hydrophilic and very suitable for emulsifying, represented by the general formula R1aR2bSiO(4-a-b)/2, and having a melting point of 40°C or less, and provides a cosmetic material containing this silicone compound having excellent stability and moisture retention properties.
R1 in the general formula is a monofunctional alkyl group, aryl group, aralkyl group or fluorine-substituted alkyl group having 1-10 identical or different carbon atoms, which does not contain an aliphatic unsaturated bond, and R2 is an organic group represented by the general formula -(CpH2p O(CqH2qO)r-X, where X is a monofunctional residue excepting the hydroxyl group of sterol, a and b are integers satisfying the relations 1.0≤a≤2.5, 0.001≤b≤1.0, and 1.5≤a+b≤2.6, respectively, p is an integer in the range 2-6, q is an integer in the range 2-4, and r is an integer in the range 3-200.
本发明提供了一种低熔点、亲水性和非常适合乳化的甾醇改性有机硅化合物,由通式 R1aR2bSiO(4-a-b)/2表示,熔点为40℃或更低,并提供了一种含有这种有机硅化合物的化妆品材料,具有优异的稳定性和保湿性。
通式中的 R1 是具有 1-10 个相同或不同碳原子、不含脂肪族不饱和键的单官能团烷基、芳基、芳烷基或氟取代烷基,R2 是由通式-(CpH2p O(CqH2qO)r-X 表示的有机基团,其中 X 是除甾醇羟基外的单官能团残基,a 和 b 是满足 1.0≤a≤2.5、0.001≤b≤1.0 和 1.5≤a+b≤2.6,p 是 2-6 范围内的整数,q 是 2-4 范围内的整数,r 是 3-200 范围内的整数。