Polymate Additives Co. |Limited
Add: 206Shi, 101Dong, Huaqiaocheng
Pukou, Nanjing, China, 210031
Tel: +86 (0)25 570 11575
Fax: +86 (0)25 570 16494
Email: polymateadditives@gmail.com
Web: www.PolymateAdditives.com
  Phenolic Antioxidants
Plaox-1010, Plaox-1076, Plaox-1098
Plaox-1024, Plaox-3114
Organophosphite Antioxidants
  Plaox-168, Plaox-626
  Amine Antioxidants
  Plaox-BODPA, Plaox-DNDPA
Plaox-DODPA, Plaox-DCDPA
  Thioester Antioxidants
  Plaox-DLTDP, Plaox-DSTDP
  Blended Antioxidants
  Plaox-B215, Plaox-B225
  Heat stabilizers
  Pherst-TPP, Pherst-ODPP
Light stabilizers
HALS (hindered amine light stabilizers)
  Palst-770, Palst-622, Palst-944
Palst-783, Palst-791
, Palst-3529
  UVA (Ultraviolet absorbents)

Pamsorb-531, Pamsorb-P
Pamsorb-234, Pamsorb-326
Pamsorb-327, Pamsorb-328
Pamsorb-1164, Pamsorb-1577

Flame retardants
Brominated Flame retardants

Plamtar-TBBA, Plamtar-BDDP
Plamtar-DBDPE, Plamtar-BTBPOE
Plamtar-HBCD, Plamtar-TTBPC

  Halogen free Flame retardants
  Plamtar-RDP, Plamtar-BDP
Plamtar-DOPO, Plamtar-DOPO-HQ
About us | Products | Service | Contact us   
Light stabilizers  
    Ultraviolet absorbents    
    Pamsorb-531 | Pamsorb-P
Pamsorb-326 | Pamsorb-327 | Pamsorb-328
Pamsorb-1164 | Pamsorb-1577
    Ultraviolet absorbent Pamsorb-234    

Chemical name: 2-(2H-benzotriazol-2-yl)-4, 6-bis (1-methyl-1-phenylethyl) phenol
Equivalent: Tinuvin 234 ( Ciba SC )/Lowilite 234 (Chemtura)
Molecular formula: C30H29N3O
Molecular weight: 447.6
CAS No.: 70321-86-7

Structural formula:



Appearance: Slightly yellow powders
Melting point: 137.0 ~ 141.0 ˇăC
Volatile: 0.5% max
Ash: 0.05% max

Transmittance (460nm): 97.0% min
Transmittance (500nm): 98.0% min
Assay: 99.0% min


Pamsorb-234 is a high molecular weight ultraviolet light absorber. It exhibits strong absorbance in the 300-400 nm regions and minimal absorbance in the visible (above 400nm) of the spectrum.
Pamsorb-234 is particularly suitable for applications characterized by high surface area, such as films and fiber. It protects organic polymers as well as pigments from UV light. Pamsorb-234 has world wide food contract approvals in most polymers and is especially suitable for packaging applications for food, consumer care products and pharmaceuticals. Pamsorb-234 can be used in combination with HALS or antioxidant.




HALS (hindered amine light stablizers)
Palst-770 | Palst-622 | Palst-944 | Palst-783 | Palst-791 | Palst-3346 | Palst-3529

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