| abstract |
Compound having the general formula: <IMAGE> in which M<N+> denotes a polyvalent metal cation in which n is equal to 2, 3 or 4; and one of the symbols X1 or X2 denotes a hydrogen atom, the other denoting one of the following radicals Y1 or Y2: <IMAGE> where M<n+> are as defined above, where each M<n+> and n maybe identical or different. The compounds may be used as sunscreening agents for protection against ultra-violet radiation. |