Photoinitiators
Photoinitiator EAB
4,4′-Bis(diethylamino)benzophenone
The most potent benzophenone-type amine synergist for maximum cure speed.
Product Description
EAB carries amine groups on both aromatic rings, making it the strongest hydrogen-donating synergist in the benzophenone family. Small amounts dramatically raise the cure speed of ITX, DETX, MBP and thioxanthone packages, especially in black inks where light is scarce.
Its strong amine character means yellowing must be considered in white systems, so EAB is primarily specified for dark inks, black offset systems and cationic sensitization where its performance justifies formulation care. Typical dosage: 0.5–2 wt%.
Key Features
- Highest synergist efficiency in the benzophenone family
- Small dosages deliver large cure-speed gains
- Effective sensitizer for cationic onium systems
- Proven in black offset ink formulations
Applications
- Black and dark UV offset inks
- Screen inks for dense pigmentation
- Cationic sensitizer packages
- Adhesives requiring maximum speed
- Deep-cure pigmented coatings
Specifications
| CAS No. | 90-93-7 |
|---|---|
| Molecular Formula | C21H28N2O |
| Molecular Weight | 324.46 |
| Appearance | Light yellow powder |
| Assay (HPLC) | ≥ 98.0% |
| Melting Point | 92 – 96 °C |
Packaging & Storage
25 kg fiber drum with PE liner. Store cool, dry and protected from light; shelf life 24 months.
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