Photoinitiator
2-Hydroxy-2-methyl-1-phenylpropan-1-one (HMPP, Darocur 1173) liquid photoinitiator for free-radical UV-curable coatings, inks, and adhesives. It has excellent absorption in the 300–360 nm range, making it highly efficient under mercury and LED UV lamps. Low yellowing, low migration, and high reactivity make it a standard choice for clear and pigmented UV-curable formulations.
Технические характеристики
| purity | ≥ 99% |
| density | 1.07 – 1.09 g/cm³ |
| appearance | Clear pale yellow liquid |
| flash point | 89°C (CC) |
| refractive index | 1.505 – 1.515 |
Области применения
- UV-curable clear coatings and varnishes
- Radiation-cured printing inks (offset, flexo, screen)
- UV-curable adhesives and laminating adhesives
- Optical fiber coatings
- Dental composite resins and composites
Особенности продукта
- High reactivity under both mercury and LED UV lamps
- Excellent surface cure and through-cure
- Low yellowing — suitable for clear and white systems
- Good solubility in acrylate monomers and oligomers
- Low odor compared to benzoin ether types