This invention provides a sterol-modified silicone compound which is low melting, hydrophilic and very suitable for emulsifying, represented by the general formula R
1
a
R
2
b
SiO
(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
R
1
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 R
2
is an organic group represented by the general formula —(C
p
H
2p
O(C
q
H
2q
O)
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
固醇改性
有机硅化合物,该化合物熔点低、亲
水性强且非常适合乳化,其通式为 R
1
a
R
2
b
氧化
硅
(4.a.b)/2
且熔点不超过 40 摄氏度,并提供一种含有这种
硅氧烷化合物的化妆品材料,其稳定性和保湿性极佳
R
1
在通式中为具有 1-10 个相同或不同碳原子的单官能团烷基、芳基、芳烷基或
氟取代烷基,其中不含脂肪族不饱和键,且 R
2
是由通式-(C
p
H
2p
O(C
q
H
2q
O)
r
-X,其中 X 是除
甾醇羟基外的单官能团残基,a 和 b 分别是满足 1.0≦a≦2.5、0.001≦b≦1.0 和 1.5≦a+b≦2.6 关系的整数,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。