Light stabilizer 2020
As of June 2020, we expand our product range with the development of, ironically, Light stabilizer 2020. We continuously develop to support our customers and this product was still missed. Fortunately we can now offer this product commercially!
Introduction
Since the hindered amine light stabilizer (HALS) was developed in the late 1970s, it has received widespread attention in the market. Not only due to its excellent light stability and application performance. It also has synergistic effect with UV absorbers and Antioxidants.
At present, the hindered amine light stabilizers have a tendency of high molecular weight. Generally speaking, the increase of molecular weight can increase the HALS’ performances. For example, extraction resistance, migration resistance, precipitation resistance, heat resistance and reduce the loss caused by physical action. However, if the molecular weight is too high, it will affect the migration and diffusion of HALS in the polymer material. It is not conductive to the effective supplement of HALS molecules from the inside of the material to the surface. Studies show that if Omnistab LS 2020 is to play at its best stability, its average relative molecular weight is generally controlled at 2600-3400.
Moleculair weight
The average relative molecular weight of most commercial HALS products is about 2000. Therefor, the Light Stabilizer 2020 has better UV resistance and thermal stability, lower volatility and better compatibility with polymers.
Moreover, the molecular weight distribution of Omnistab LS 2020 is very narrow and the poly dispersion is less than 1.5. This is very powerful to ensure the final performance of the products and durable stability in the processing and application. The light transmittance of the LS 2020 is more than 92% at 425 nm. And the light stabilizer result is 2 – 4 times than the traditional absorption light stabilizer. Also it is compatible with many polymer materials such as polyolefin, olefin copolymer, polyacetal, polyamide, polyurethane, soft and hard PVC or their mixtures, styrene, special adhesives and so on. In addition, it is as nontoxic and polluting as other high-molecular-weight restive amines such as Omnistab LS 622, Omnistab LS 944, and Omnistab UV 3346. It also has the same FDA and REACH approval.
Quality control
| Test item | Property requirement |
| CAS number | 192268-64-7 |
| Appearance | Light yellow crystalline particles |
| Melting point (℃) | 120.00 – 150.00 |
| Volatiles (%) | 1.00 max |
| Molecular weight (Mn) | 2600 – 3400 |
| Poly dispersion (Mw/Mn) | 1.50 max |
| Clarity of solution (1g in 20ml Toluene | Clear to opalescent solution |
| Light transmittance at 425nm | 92.00 min |
For more information, samples for testing or a price quotation. Please give us a call or send us an email. Try us!
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