发明授权
US06531143B1 &agr;-hydroxy fatty acid derivatives and external compositions containing the same
有权
α-羟基脂肪酸衍生物和含有它们的外用组合物
- 专利标题： &agr;-hydroxy fatty acid derivatives and external compositions containing the same
- 专利标题（中）： α-羟基脂肪酸衍生物和含有它们的外用组合物
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申请号： US09701532申请日： 2000-11-28
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公开(公告)号： US06531143B1公开(公告)日： 2003-03-11
- 发明人: Masafumi Yakumaru , Hiroko Nakatsugawa , Yoshiko Iwamoto , Takeshi Ikemoto
- 申请人： Masafumi Yakumaru , Hiroko Nakatsugawa , Yoshiko Iwamoto , Takeshi Ikemoto
- 优先权： JP10-155706 19980604
- 主分类号： A01N3702
- IPC分类号： A01N3702
摘要：
An oily base, which has excellent stability, a low melting point and does not irritate the skin and an external composition which contains the oily base. The present invention is directed to an alpha-hydroxy fatty acid derivatives represented by the general formula (1): wherein R1 represents a straight-chain or branched alkyl group having 10 to 24 carbon atoms, R2 represents a straight-chain or branched alkyl group having 1 to 31 carbon atoms, and R3 represents a straight-chain or branched alkyl group having 11 to 31 carbon atoms, and an external composition contains at least one of the derivatives.