2-(2-Hydroxyphenyl)-2H-benzotriazoles

Class of chemical compounds thumb|General structural formula of 2-(2-hydroxyphenyl)-2H-benzotriazoles 2-(2-Hydroxyphenyl)-2H-benzotriazoles, also referred to as phenolic benzotriazoles, are an important class of UV absorbersUV-Absorber RD-21-00834 25. January 2020 comprising the benzotriazole building block. Structure The molecules are composed of substituted benzotriazoles with a phenyl group in the 2-position, which carries a hydroxy group in the ortho-position. Examples of 2-(2-hydroxyphenyl)-2H-benzotriazoles Name Acronym Structural formula R1 R2 R3 2-(2H-Benzotriazol-2-yl)-4-methylphenol UV-P 120px|Chemical structure of UV-P – methyl – 2-(2H-Benzotriazol-2-yl)-4-tert-butylphenol UV-PS 130px|Chemical structure of UV-PS – tert-butyl – 2-(2H-Benzotriazol-2-yl)-4,6-bis(2-phenyl-2-propanyl)phenol UV-234 150px|Chemical structure of UV-234 (2-propanyl)phenol (2-propanyl)phenol – 2-(2H-Benzotriazol-2-yl)-4,6-di-tert-butylphenol UV-320 130px|Chemical structure of UV-320 tert-butyl tert-butyl – 2-(5-Chloro-2H-benzotriazol-2-yl)-4-methyl-6-di-tert-butylphenol UV-326 150px|Chemical structure of UV-326 tert-butyl methyl chlorine 2-(5-Chloro-2H-benzotriazol-2-yl)-4,6-di-tert-butylphenol UV-327 150px|Chemical structure of UV-327 tert-butyl tert-butyl chlorine2-(2H-Benzotriazol-2-yl)-4,6-di-tert-pentylphenol UV-328 130px|Chemical structure of UV-328 tert-pentyl tert-pentyl – 2-(2H-Benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol UV-329 150px|Chemical structure of UV-329 – 1,1,3,3-tetramethylbutyl – 2-(2H-Benzotriazol-2-yl)-6-(sec-butyl)-4-(tert-butyl)phenol UV-350 130px|Chemical structure of UV-350 sec-butyl tert-butyl –2,2′-Methylenbis[6-(2H-benzotriazol-2-yl)-4-(2,4,4-trimethyl-2-pentanyl)phenol] UV-360 180px|Chemical structure of UV-360 [dimer linked via methylene group] 1,1,3,3-tetramethylbutyl – 2-(2H-Benzotriazol-2-yl)-6-(2-phenyl-2-propanyl)-4-(2,4,4-trimethyl-2-pentanyl)phenol UV-928 140px|Chemical structure of UV-928 (2-propanyl)phenol 1,1,3,3-tetramethylbutyl – Use 2-(2-hydroxyphenyl)-2H-benzotriazoles are used as UV stabilizers in lacquers and plastics.2-(2-Hydroxyphenyl)-2H-benzotriazole RD-08-02487 25. January 2020 References Category:Benzotriazoles