| 简介 |
PROBLEM TO BE SOLVED : To provide a cosmetic excellent in discoloration characteristics under common environment used and capable of moreover improving a decorative property. SOLUTION : The cosmetic comprises a compound containing a rare earth element atom, an atom of element capable of adopting + trivalent or + tetravalent electron configuration and an oxygen atom, namely a compound represented by formula (1) : RTO3or formula (2) : R2QO5(R is a rare earth element; T is an element capable of adopting + trivalent electron configuration; Q is an element capable of adopting + tetravalent electron configuration). COPYRIGHT : (C)2007, JPO&INPIT |
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