SINOMER® UVE3421 is a tetrafunctional o-cresol novolac epoxy acrylate oligomer with high acid value. It exhibits good heat resistance, excellent electrical insulation, high surface hardness, and wear resistance. It delivers outstanding adhesion on substrates such as copper, other metals, and glass. Its high acid value makes it readily soluble in alkaline solutions, classifying it as a typical alkali-developable photosensitive resin.
SINOMER® UVE 3421
(Tetrafunctional High-Acid-Value o-Cresol Novolac Epoxy Acrylate)
High acid value for excellent alkali developability
Good heat resistance
Excellent electrical insulation
High surface hardness and wear resistance
Outstanding adhesion on copper, metals, and glass
Appearance | Yellow, viscous transparent liquid |
Color (Fe-Co) | ≤ 14 |
Viscosity @ 25°C | 20,000 – 40,000 cps |
Acid Value | 50 – 60 mg KOH/g |
Solid Content | ≥ 60 % |
Refractive Index @ 25°C | 1.524 ± 0.005 |
Density @ 25°C | 1.15 ± 0.02 g/ml |
Functionality | 4 |
UV etch resist inks and solder mask inks for printed circuit boards (PCB)
Other photosensitive inks
Glass inks
Adhesives
| Component | Content (wt%) |
|---|---|
| SINOMER® UVE3410 | 52 |
| SINOMER TPGDA | 20 |
| PI 651(Sinocure BDK) | 4 |
| Phthalocyanine Blue | 1 |
| Talc Powder | 20 |
| Fumed SiO₂ | 2 |
| Leveling Agent | 1 |
| Defoamer | 1 |
Process Flow:
Panel screen printing → Baking (80±5°C, 20 min) → Film alignment → UV exposure → Developing (1.5% Sodium Carbonate solution) → Circuit pattern
Ink Performance:
| Property | Result |
|---|---|
| Alkali Developability | Good |
| Adhesion (Cross-cut, 3M tape) | 100/100 |
| Component | Content (wt%) |
|---|---|
| SINOMER® UVE3410 | 45 |
| SINOMER® UVE3421* | 13 |
| SINOMER DPHA | 10 |
| Phthalocyanine Blue | 1 |
| Talc Powder | 20 |
| PI 651-SINOCURE BDK | 5 |
| Leveling Agent | 1 |
| Defoamer | 1 |
Process Flow:
Panel screen printing → Baking (75°C, 20 min) → Film alignment → UV exposure → Developing (1.0% Sodium Carbonate solution)
Ink Performance:
| Property | Result |
|---|---|
| Alkali Developability | Good |
| Adhesion (Cross-cut, 3M tape) | 100/100 |
| Hardness | 5H |
| Heat Resistance (250°C, 30 min) | Pass |
Levelling agent/Defoamer *=Our brand Agesin® provides equivalent substitutes for brand additives such as BYK and TEGO,etc.
20kg or 220kg/drum.
Store in a dry, clean, ventilated warehouse.
Avoid exposure to light and heat.
Be careful to prevent leakage, rain and sun during transportation
We offer a variety of options to help you find the right product for your application
Provide formulation optimization support for water-based/solvent-based systems
Full coverage of REACH, FDA, and GB standards
99.8% on-time delivery rate, 10,000-ton production capacity guarantee
