Light Stabilizers (HALS)
Light Stabilizer UV-292
Bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate blend
Light Stabilizers (HALS)
Light Stabilizer UV-770
Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate
The classic low-molecular HALS with unmatched weathering cost-performance for polyolefins.
Product Description
UV-770 is the most widely used hindered amine light stabilizer for polyolefins. Regenerated in its nitroxyl active form during weathering, it acts catalytically — scavenging polymer radicals over and over — which explains its exceptional efficiency at typical loadings of just 0.1–0.5 wt%.
In polypropylene injection molding, tapes and fibers, UV-770 extends outdoor service life by a factor of five to ten versus unstabilized resin. It is frequently combined with UV absorber UV-326 for systems where pigment and substrate protection are both required.
Aolong UV-770 is crystallized to ≥99.0% assay with low ash and moisture, protecting masterbatch viscosities and ensuring smooth extrusion at high let-down ratios.
Key Features
- Highest cost-performance HALS for PP and PE
- Effective at very low loadings (0.1–0.5 wt%)
- Regenerated during weathering — long service life
- Food-contact approved grades for packaging uses
Applications
- Polypropylene injection molded parts and crates
- PP woven tapes, ropes and raffia
- Olefin fibers and nonwovens
- HDPE crates, pallets and outdoor furniture
- Combined systems with UV-326/UV-531
Specifications
| CAS No. | 52829-07-9 |
|---|---|
| Molecular Formula | C28H52O4N2 |
| Molecular Weight | 480.73 |
| Appearance | White crystalline powder |
| Assay (HPLC) | ≥ 99.0% |
| Melting Point | 81 – 86 °C |
| Loss on Drying | ≤ 0.5% |
| Ash Content | ≤ 0.1% |
Packaging & Storage
25 kg fiber drum with PE liner or 25 kg carton box. Store cool, dry and protected from light; shelf life 24 months in original sealed packaging.
Related Products
Light Stabilizers (HALS)
Light Stabilizer UV-622
Oligomeric HALS (dimethyl succinate / 4-hydroxy-TEMPO polymer)
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