Technical data
| Appearance | Clear transparent liquid |
|---|---|
| Color (Hazen) | ≤100 |
| Acid value (mgKOH/g) | 140–190 |
| Free acid (wt%) | ≤2.0 |
| Viscosity (mPa·s, 25℃) | 180–270 |
| Density (g/ml, 25℃) | 1.150–1.200 |
| Water content (wt%) | ≤0.2 |
| Inhibitor MEHQ (ppm) | 250–500 |
Values are typical. The latest TDS and batch COA govern.
Key features
- Multifunctional — extremely high crosslink density
- Lowest viscosity in the series, strong viscosity reduction
- Fast cure, high conversion
- Outstanding abrasion and scratch resistance
Typical applications
- Abrasion-resistant UV top coats for 3C devices
- Vacuum metallizing top coats
- Optical lens hard coats
- Automotive clear coats
- Synergy in flame retardant systems
FAQ
Why does KM2160 improve abrasion resistance?
Three or more polymerizable double bonds build a highly crosslinked 3D network after cure, which raises surface hardness and scratch resistance.
What happens if I overdose?
Excessive crosslink density makes the film brittle and increases shrinkage, which can reduce adhesion. Use 1–3% and pair with flexible monomers.