Polymer additives are added with small amounts to protect polymers performance by preventing loss of mechanical strength, cracking, crazing, yellowing, and loss of gloss due to day-to-day exposure to air and light.
UV absorber ( Benzotriazole)
UV-P : 2-(2-Hydroxy-5-methylphenyl)-Benzotriazole
CAS NO. 2440-22-4
Against Tinuvin P
UV-234 2-(2-Hydroxy-3,5-di-(a,a-dimethyl benyl) phenyl) benzotriazole
CAS NO 70321-86-7
Against Tinuvin 234
UV-320 2-(2-hydroxy-3,5-ditert-butyl)benzotriazole
CAS NO 3846-71-7
Against Tinuvin 320
UV-326 : 2-(2'-Hydroxy -3' -tert-butyl-5'-methylphenyl)-5-chloro benzotriazole
CAS NO. 3896-11-5
Against Tinuvin 326 (Ciba)
UV-327 : 2-(2'-Hydroxy -3' ,5'-ditert-butylphenyl)-5-chloro benzotriazole
CAS NO. 3864-99-1
Against Tinuvin 327
UV-328 : 2-(2'-Hydroxy -3' ,5'-ditert-butylphenyl)- benzotriazole
CAS NO. 25973-55-1
Against Tinuvin 328
UV-329 : 2-(2'-hydroxy-5'-tert-octyllphenyl)benzotriazole
CAS NO. 3147-75-9
Against Tinuvin 5411 (Ciba)
UV-360 2,2'-Methylene bis-(4-t-octyl-6-(benzotrilazolyl)-phenol)
CAS NO. 103597-45-1
Against Tinuvin 360 (Ciba)
UV-571 2-(2H-Benzotriazol-2-yl)-6-dodecyl-4-methyl phenol, branched and linear
CAS NO 125304-04-3
Against Tinuvin 571
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