oxybenzone manufacturer 131-57-7 supplier

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oxybenzone manufacturer  131-57-7 supplier

Ultraviolet absorbers are light stabilizers that absorb the ultraviolet parts of sunlight and fluorescent light sources without changing in themselves. Plastics and other polymeric materials in daylight and fluorescence, due to the action of ultraviolet light, the production of automatic oxidation reaction, resulting in the degradation of polymers and deterioration, so that the appearance and mechanical performance of poor. The addition of UV absorbers selectively absorbs this high-energy UV ray, making it harmless energy for release or consumption. 

The types of polymers are different, the wavelengths of the UV that degrade them are not the same, different UV absorbers can absorb different wavelengths of ultraviolet light, when used, according to the type of polymer should be selected UV absorbers.

Ultraviolet absorbers should have the following conditions: (1) can strongly absorb ultraviolet rays (especially ultraviolet rays with wavelengths of 290-400nm) ;(2) good thermal stability, even in processing will not change due to heat, thermal volatility is small Adverse reaction; (4) good mixing solubility, can be evenly dispersed in the material, do not spray frost, do not seep out; (5) absorbent itself photochemical stability is good, non-decomposition, unchanged color; (6) colorless, non-toxic, odorless; (7) resistant to immersion; (8) cheap, Easy to obtain.