Amine-Modified Polyether Acrylate (PEA Synergist)
Amine-modified polyether acrylate (PEA) is a reactive amine synergist oligomer that dramatically enhances the surface cure and through-cure of UV printing inks by scavenging oxygen radicals and co-initiating via hydrogen abstraction, dramatically reducing the oxygen-inhibition effect that limits cure at the ink surface. PEA synergists are reactive and non-extractable after cure, making them preferred over small-molecule amine co-initiators in food-adjacent UV ink applications.
Technical Specifications
| appearance | Pale yellow to amber liquid |
| viscosity (mPa·s) | 200–2000 (25 °C) |
| acid value (mgKOH/g) | ≤5 |
| amine value (mgKOH/g) | 50–200 |
| double bond content (mmol/g) | 1.5–4.0 |
Applications
- Surface-cure enhancer in UV offset ink formulations
- Oxygen-inhibition reducer in UV flexo inks
- Co-initiator in UV screen and digital inkjet inks
- Reactive synergist in UV LED-curable coating systems
- Low-migration UV varnish component
Key Features
- Effectively overcomes oxygen inhibition for fast surface cure
- Reactive oligomer: covalently incorporated—minimal migration risk
- Improves cure speed at lower photoinitiator loading
- Compatible with EA, PU, and polyester acrylate oligomers
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