2H-Benzotriazole UV absorbers substituted at the 3-position or at the 5-position of the phenyl ring by a 1,1-diphenylalkyl moiety, particularly a 1,1-diphenylethyl group, are particularly photostable in automotive coatings, and are of low color and exhibit low volatility in thermoplastic compositions.

los amortiguadores UV 2H-Benzotriazole substituidos en el 3-position o en el 5-position del anillo fenilo por 1,1-diphenylalkyl un moiety, particularmente un grupo 1,1-diphenylethyl, son particularmente photostable en capas automotoras, y están de color bajo y exhiben volatilidad baja en composiciones termoplásticas.