The invention relates to a compound of formula: ##STR1## where R.sub.1 is of the formula: ##STR2## where R.sub.3 represents a linear or branched C.sub.1 -C.sub.20 alkyl; R.sub.2 is identical to R.sub.1 or is a halogen or a linear or branched C.sub.1 -C.sub.20 alkoxy or mono- or dialkylamino or is of the formulae (III) or (IV): ##STR3## where R.sub.5 is a linear or branched C.sub.1 -C.sub.20 alkyl and n=0 or 1; R.sub.4 denotes H, OH or C.sub.1 -C.sub.5 alkoxy; ##STR4## Application of these compounds to the protection of the skin and hair against ultraviolet radiation.
本发明涉及一种化合物,其
化学式为:##STR1##其中R.sub.1的式子为:##STR2##其中R.sub.3代表线性或支链C.sub.1-C.sub.20烷基;R.sub.2与R.sub.1相同或为卤素或线性或支链C.sub.1-C.sub.20烷氧基或单或双烷基
氨基,或为式子(III)或(IV):##STR3##其中R.sub.5为线性或支链C.sub.1-C.sub.20烷基,n=0或1;R.sub.4表示H、OH或C.sub.1-C.sub.5烷氧基;##STR4##这些化合物的应用是用于保护皮肤和头发免受紫外线辐射的影响。