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UV Absorber Sunsorb 329

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Chemical name: 2-(2'-hydroxy-5'-(1,1,3,3-tetramethylbutyl)phenyl)benzotriazole
Trade name synonyms: Tinuvin 329, Lowilite 29

CAS No. : CAS No.3147-75-9

EINECS No. 221-573-5

Molecular weight : 323

Molecular formula:C20H25N3O

Solubility: 

Water 

<0.01

Cyclohexane 

 15

Methylene chloride

38

Acetone 

9

Ethyl acetate

 15

Methanol 

   0.6

Benzene 

32

n-hexane

  6

Chloroform 

   37

 

Adding Amount:

Rigid PVC: 0.25 – 1.0%,  ABS resin: 0.25 – 0.75% ,  NMA: 0.1-1.0% , PC: 0.1-1.0% 

 

Application:

Sunsorb-329 is a high effective light stabilizer for variety of plastics and other organic substrates. It exhibits strong absorbance in the 300-400 nm region and minimal absorption in the visible region >400nm. Sunsorb-329 can be used in combination with HALS or antioxidant. Such blends can achieve synergistic results. It can preserve the original appearance and physical integrity of films. Fibers, etc during outdoor weathering.  

 

Packaging and Storage:

25kgs carton or 25kgs fiber drum. It is stable during storage, avoiding high temperature an


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