Hisorb 328 by LG Chem is a 2-(3,5-di-tert-pentyl-2-hyroxyphenyl) benzotriazole. Acts as an UV absorber. Prevents the yellowing and degradation of polymers.
Hisorb 327 by LG Chem is a 2-(3-5-ditertbutyl-2-hydroxphenyl)-5-chlorobenzotriazole. Acts as an UV absorber. Prevents the yellowing and degradation of polymers.
Hisorb 326 by LG Chem is a 2-(3-tert-butyl-2-hydroxy-5-methylphenyl)-5-chlorabenzotriazole. Acts as an UV absorber. Presents a low volatility at high temperature and high resistance to thermal degradation.