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| UV absorber- 326 |
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| 2'-(2'-Hydroxy-3'-tert-buty-5'-methyl-phenyl)-5-chlorobenzotriazole |
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| 3896-11-5 |
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UV 326 is especially suited for polyolefin and cold cured polyesters. It has a low volatility at high temperatures and high resistance to thermal degradation and can therefore be used without significant loss or decomposition in polyolefin compounding and molding processes. In the use for the UV protection of polyester, UV 326 does not form colored complexes with the metallic salts used for the curing process of these resin. It is also used for photosensitive materials and coatings and so on.
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Properties:
UV-326 is a important ultraviolet absorber of bonzotriazole series, which is stable, nontoxic, higher absorbency for ultraviolet ray.
Specifications:
Appearance Light yellow powder
Melting point,oC 138-141
Volatile matter,% 0.5max
Ash content,% 0.05max
Transmissivity 460nm 97%min, 500nm 98%min
Purity,% 99min
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