| 摘要 |
The present invention relates to sunscreen complexes, and more particularly to sunscreen metal complexes, having enhanced UVA absorption. These complexes comprise a sunscreen moiety complexed to a metal cation, or alternatively an ammonium or substituted ammonium cation, in which the sunscreen moiety further comprises a dibenzoylmethane UVA-absorbing chromophore, a UVB-absorbing chromophore, and a linking group connecting the two chromophores. These complexes are useful for protecting the skin from the harmful effects of ultraviolet radiation. This invention also relates to methods for preparing these sunscreen metal complexes and to compositions containing these complexes. |
