Epoxy Acrylate Oligomer for UV Ink
CAS Number: 55818-57-0
Bisphenol A-based epoxy acrylate (EA) is the most widely used UV-curable oligomer in offset, screen, and flexo printing inks, delivering the highest crosslink density, excellent gloss, hardness, and chemical resistance of any oligomer class. EA-based UV inks cure rapidly under mercury arc and LED UV sources, produce scratch-resistant films with superior adhesion to coated papers and metals, and serve as the oligomeric backbone in virtually all UV offset ink formulations.
Technical Specifications
| appearance | Pale yellow to amber viscous liquid |
| functionality | 2 (diacrylate) |
| viscosity (mPa·s) | 5000–30000 (25 °C) |
| acid value (mgKOH/g) | ≤5 |
| double bond equivalent (g/mol) | 250–600 (grade dependent) |
Applications
- UV offset ink primary oligomer binder
- UV screen-printing ink on metals, plastics, and PCBs
- High-gloss UV coatings and overprint varnishes
- UV flexo inks for non-absorbent substrates
- UV LED curable inks for commercial printing
Key Features
- Highest gloss and hardness among UV oligomer classes
- Fastest cure speed under UV mercury arc and LED sources
- Excellent adhesion to coated paper, board, and metal substrates
- Wide reactive diluent compatibility for viscosity adjustment
Send Inquiry
CAS Number
55818-57-0
Category
Printing Ink ChemicalsAvailability
In StockSample
Dispatched within 5 days
More in Printing Ink Chemicals
Acrylic Resin for Waterborne Flexo Ink
25035-69-2
Alkyd Resin for Offset Ink (Varnish Grade)
68440-04-0
Amine-Modified Polyether Acrylate (PEA Synergist)
Antistatic Agent for Printing Inks (EG-Based)
107-21-1
C5 Aliphatic Hydrocarbon Resin for Ink
64742-16-1
C9 Aromatic Hydrocarbon Resin for Ink
68955-27-1
Calcium Carbonate (Ink Extender & Filler)
471-34-1
Calcium Drier for Offset Ink (Auxiliary Drier)
61789-36-4