紫外線吸収のための２−フェニル−１，２，３−ベンゾトリアゾール

摘要

The present invention relates to novel benzotriazoles and to novel topical compositions comprising these benzotriazoles. Furthermore, the invention relates to the use of the novel benzotriazoles as photostabilizer and solubilizer for dibenzoylmethane derivatives such as Butyl Methoxydibenzoylmethane. In one aspect the invention relates to novel benzotriazoles of formula (Ia) wherein R2 is hydrogen; C1-30alkyl; C1-5alkoxy; C1-5alkoxycarbonyl; C5-7cycloalkyl; C6-10aryl or aralkyl; R3 is hydrogen; C1-5alkyl; C1-5alkoxy or halogen, preferably hydrogen or Cl; R4 is hydrogen or C1-5alkyl; R5 is C1-30alkyl or C5-10cycloalkyl.