Alkyl-aryl 1,3-propanedion silicone derivative and an external preparation for skin with the derivative compounded therein
申请人:SHISEIDO COMPANY LIMITED
公开号:EP0528380A1
公开(公告)日:1993-02-24
Alkyl-aryl 1,3 - propanedione silicone derivative characterized in that said derivative is siloxane having at least one unit expressed by the general formula 1 as shown below and other unit which can exist in said siloxane is expressed by a general formula of O4-r/2 SiR⁵r, and an external preparation for skin with said derivative compounded therein.
(Herein;
R¹: A hydroxyl group, an alkyl group having 1 to 8 carbon atoms , or an alkoxy group having 1 to 8 carbon atoms
R²: An alkyl group having 1 to 7 carbon atoms
R³: A bivalent alkylene group or an oxyalkylene group having at least 2 carbon atoms
R⁴, R⁵: An alkyl group, a phenyl group, or a trimethylsiloxy group having 1 to 4 carbon atoms
m: An integer from 0 to 3
p: 0 or 1
q,r: An integer from 0 to 3.)
An excellent UV-A absorbing capability and compatibility with a silicone-based base are provided.
烷基芳基 1,3-丙二酮硅氧烷衍生物,其特征在于所述衍生物是硅氧烷,至少具有一个如下所示通式 1 所表示的单元,所述硅氧烷中可能存在的其他单元由通式 O4-r/2 SiR⁵r 表示,以及含有所述衍生物的皮肤外用制剂。
此处
R¹:羟基、具有 1 至 8 个碳原子的烷基或具有 1 至 8 个碳原子的烷氧基
R²:具有 1 至 7 个碳原子的烷基
R³:至少有 2 个碳原子的二价亚烷基或氧亚烷基
R⁴,R⁵:具有 1 至 4 个碳原子的烷基、苯基或三甲基硅氧烷基团
m:0 至 3 的整数
p:0 或 1
q,r:0至3的整数)。
本产品具有极佳的紫外线吸收能力,并与硅酮基底兼容。