Omnistab Benzotriazole UV absorbers

octubre 21, 2021
blog

Omnistab Benzotriazole UV absorbers have exceptionally strong and broad UV absorption properties throughout the UV spectrum. Especially designed for polymers and coatings. UV absorbers are one of the important varieties of polymer additives. In this article we will take a close look at this particular product group.

Highlights

Due to its extensive UV absorption capacity, this product offers excellent protection for plastics. However, also for topcoats and various light-sensitive surfaces. It is highly recommended for thermoset plastics, organic substrates and coatings that function as weathering. This product can also be used in combination with other light stabilizers of HALS class. For example, to give plastics, coatings and paints superior protection against gloss reduction, cracking, color change, blistering, chalking and delamination. To sum up, they have excellent performance in the spectrum range of 280-400nm, especially above 350nm.

How does it work?

Benzotriazole UV absorbers can attenuate the photodegradation and improve the lightfastness of polymers. The action mechanism of benzotriazole UV absorbers is similar to that of benzophenone. In its structure, the are also intramolecular hydrogen bonding rings (formed by hydroxyl & nitrogen on triazole group). When they absorb UV light, hydrogen bonds break or form photo-tautomers, converting harmful UV energy into harmless heat energy and then releasing it. As mentioned in previous article about UV absorbers in general.

Our products

Benzotriazole UV absorbers which can be widely used in PVC, ABS, PC and PU are Omnistab UV 326, UV 328 and UV 329. By clicking on the product the specific product page opens. Here you will find more content such as CAS number, formula and other related products.

  • Omnistab UV 326 has the characteristic of strong and wide UV absorption band. You can use them in photographic materials such as color film, polymer material, external protective coating and many other fields.
  • Omnistab UV 328 do not salt non-ferrous metals during PVC production. It has good chemical stability and is low volatility. This benzotriazole UV absorber is especially suitable for polyolefin.
  • Omnistab UV 329 is an excellent UV absorber for PA. it can effectively improve stability and weather resistance of nylon finished products.

For questions related to this article, please send us your inquiry. If you would like to receive regular updates and insight information about our products, Follow us on linkedIn.

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