Triazines UV absorbers not only have excellent properties, but also have little impact on the ecological environment during their use. Therefore, triazines have gradually become a research hotspot and development direction in the field of UV absorbers. In addition to the OMNISTAB UV1577 mentioned before, our OMNISTAB UV1164 also belongs to Hydroxybenzotriazines UV absorber!
Compared with other UV absorbers, Triazines have the following advantages:
① High UV absorption efficiency(less dosage with better effect)
② Low gloss (To make it more widely used)
③ High processing temperature
④ Good compatibility (good dispersion, and the molecules themselves are easy to chemical modification)
⑤ With excellent broad absorption spectrum (high molar absorption coefficient in UV A and UV B range)
The absorption mechanism of triazines UV absorbers is based on two parts:
1. The conjugated π-electron architecture of the compound
2. The structure capable of hydrogen migration.
An intramolecular hydrogen bond can be formed between the ortho - position hydroxyl group on the benzene ring and the nitrogen atoms on the adjacent triazine ring to form a hexatomic ring, and the hexatomic ring forms a conjugated system with the surrounding structure. The energy required to open the chelate ring is just close to the Ultraviolet energy in the range of UV A and UV B. When the molecule itself absorbs UV light, the molecular energy increases and the weakest N-H bond in the hexatomic ring breaks. The absorbed energy is released in the form of heat, fluorescence or phosphorescent, which is harmless to the polymer material, and the molecular structure recovers, thus absorbing a large amount of UV light repeatedly and protecting the polymer.
Action mechanism diagram of Triazine UV absorbers
Compared with OMNISTAB UV1577, the R1, R2, R3 and R4 of OMNISTAB UV1164 are all CH3 instead of H, and the substituent group of R5 has a longer molecular chain, which means that the OMNISTAB UV1164 has a larger molecular weight and better low volatility. The difference in substitution group also makes UV1164 applicable to a relatively wide range, including nylon, PVC, PET, PBT, ABS and PMMA and other high-performance plastic products.
For more information about Triazines UV absorber products, please visit our official website: www.deltachem.net, Looking forward to your inquiry!
