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benzophenones & benzotriazole UV Absorber
As one category of UV stabilizer additive, UV absorber is also known as ultraviolet absorber.
They are additives that preferentially absorb UV radiation in a coating and transform the UV energy into longer wavelength energy. A group of chemical compositions that protect the coating film, transparent or semi-transparent films, and the substrate from photo-degradation. The combination of UV Absorber with HALS is highly synergistic.
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