CHROMOPHORES, SUNSCREEN COMPOSITIONS AND METHODS FOR PREVENTING SUNBURN

摘要

The present invention relates to novel chromophorecontaining compounds useful as sunscreen agents which have the ability to absorb both UVA and UVB wavelength radiation. These compounds comprise a specific type of UVA-absorbing chromophore covalently bonded to a specific type of UVB-absorbing chromophore. The chromophore moieties are covalently bonded together such that the electron systems of these moieties are directly coupled to thereby form a new chromophore. Typical of such compounds is ; or ; where B is a single bond or a linking moiety group selected from -O- and -NR-, wherein R is H or a C1-20 alkyl group; A is an R group; A2 is selected from -OR or -NR2; and B is selected from -NR- or -O-.