2-(2'-HYDROXYPHENYL) BENZOTRIAZOLES CONTAINING A 2,4-IMIDAZOLIDINEDIONE GROUP AND PROCESS FOR THEIR PREPARATION

摘要

2-(2'-hydroxyphenyl) benzotriazoles having general formula (I). The above 2-(2'-hydroyzphenyl) benzotriazoles having general formula (I) are useful as heat, oxygen and light stabilizers for organic polymers. In particular they are useful as UV stabilizers for organic polymers.