UV329 Tinuvin 329 Benzotriazole UV Absorber , Cyasorb UV - 5411 Off
- white Powder / Granule
Quick Detail :
UV 329 is a UV absorber of the hydroxyphenylbenzotriazole class ,
which imparts out - standing light stability to plastics and other
organic substrates .
- Name : UV329
- Chemical name : 2 - ( 2' - hydroxy - 5' - tert - octylphenyl ) - 1H
- CAS No. : 3147 - 75 - 9
UV328 exhibits strong absorbance in the 300 - 400nm region and
minimum absorption in the visible region ( ＞ 400nm ) of the
spectrum . The absorption maximum area is at 301nm and 343nm in
chloroform solution .
UV 328’s use level ranged between 0.1 and 1.0 % depending on the
substrate and performance requirements of the final application .
The product can be used alone or in the combination of other
additives . It could particularly get a good performance in the
combination of hindered amine light stabilizers such as LS 770 , LS
622 , LS 791 and so on .
|Appearance||Off-white Powder or Granule|
|Assay (GC)||99% min|
|Transmittance||460nm 97.0% min|
|500nm 98.0% min|
Competitive Advantage :
TINUVIN 329 protects polymers from UV radiation and , helping to
preserve the original appearance and physical integrity of molded
articles , films , sheets and fibers during outdoor weathering .
Hongkun is one of the important manufacturers of UV328 in China
with the same quality of BASF , and the application effect has been
proved by many customers .