Products Description
Ultraviolet absorber 234 can efficiently absorb ultraviolet rays ranging from 290 to 400 nanometers and convert the light energy into harmless heat energy. After molecular optimization, it has extremely low volatility.
It exhibits good stability and low heat loss under high-temperature processing conditions such as injection molding and extrusion at temperatures above 150℃. Moreover, it can be retained in the product for a long time, effectively enhancing the outdoor service life of the polymer.
Products Specification
| Product name | UV-234/2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol |
| CAS NO | 70321-86-7 |
| ITEM NO | M787 |
| Appearance | White to light yellow crystalline powder. |
| Purity | 99% |
| Specific gravity | 0.67 @20 °C |
| Melting point | 137 - 141 °C |
| Boiling point | > 300 °C |
| Package | 100g/1kg/10kg etc. |
| Delivery | 2-3days |
| Storage | room temperature |
| MSDS/COA/TDS | Connect us |
|
Item |
Standard |
|
|
Ethyl acetate |
7 |
|
|
Toluene |
25 |
|
|
Acetone |
2 |
|
|
n‑Hexane |
1 |
|
|
Water |
Nil |
|
|
Clarity in Toluene |
Clear solution (5g/100ml) |
|
|
Transmittance |
460 nm |
≥95% |
|
500nm |
≥97% |
|
Products Application
UV‑234 UV absorber is mainly used in engineering plastics, modified plastics, transparent polymer materials and high‑temperature powder coatings for PC, PET, PBT, PA to protect products against UV‑induced yellowing and outdoor aging.
The materials that Megma can provide for use as UV absorbers include:
|
UV Absorber 326 |
CAS 3896-11-5 |
|
Octabenzone |
CAS 1843-05-6 |
|
UV-329 |
CAS:3147-75-9 |
|
Drometrizole |
CAS:2440-22-4 |
FAQ
Q: Could UV‑234 be used for transparent PC sheets?
A: Yes, it is highly compatible with PC, will not affect transparency, effectively prevent yellowing under sunlight.
Q: Is UV‑234 soluble in water?
A: Insoluble in water; soluble in toluene, ethyl acetate, slightly soluble in acetone and n‑hexane.
Q: What processing temperature can UV‑234 withstand?
A: Good thermal stability above 150℃, fits injection, extrusion, blow‑molding processes.
Q: What is the main advantage of UV‑234 compared with other benzotriazole UV absorbers?
A: UV‑234 features extremely low volatility, stable under high‑temperature extrusion & injection molding, less loss during processing and long‑lasting anti‑UV performance.
Q: Will UV‑234 cause color shift in transparent products?
A: High transmittance, low color contribution, proper dosage will not bring obvious color shift to transparent articles.
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