| abstract |
The use of myocyanine derivatives of the general formula (1) for the protection of human hair and skin from the damaging effect of ultraviolet radiation: wherein Q is hydrogen, C1-22 alkyl, OH, OR7, NR R , or N=R ² ; R Ü or substituents; R4 is cyano, COR , COOR or other substituents; R Å is COR , COOR or other substituents; R6 is hydrogen, C1-22 alkyl, C1-22 alkoxy or COR ; R and R are hydrogen, C1-22 alkyl or other substituents including silicon-containing substituents; R ² is a C1-6 alkylidene radical; R Ü and R Þ ,R Ü and Q,R Ü and R Û , R Ü and T, R Þ and R ý , R Þ and R Ú , R2 and R6, R Þ and Q, R Ú and R6, R Ú and T, R Û and Q, T and Q may each be linked together so that 1-4 carbocyclic or N, O and/or S-containing heterocyclic rings are formed wherein each ring may be condensed with an aromatic or heteroaromatic ring; n is 1 to 4; wherein at least one of R Ü , R Û or Q is not hydrogen; and T is COR5, CN or other substituents. Cosmetic compositions and UV absorber dispersions comprising these compounds are also claimed. Monomeric or polymeric compounds wherein group T comprises a carbonyl group are also claimed per se. |