When formulated as 2K PU topcoats over epoxy primers, acrylic polyol-based systems deliver 5–10 year service life on industrial and architectural structures exposed to UAE and Saudi Arabia's intense solar radiation.
Technical specifications
| PARAMETER | SPECIFICATION | TEST METHOD |
|---|---|---|
| Chemical Class | Acrylic polyol (hydroxyl-functional) | — |
| Appearance | Clear to slightly hazy liquid | Visual |
| OH Value | 80 – 180 mg KOH/g (grade dependent) | ASTM E222 |
| OH Equivalent Weight (OHEq) | 312 – 702 g/eq | Calculated |
| Solids Content | 50 – 75% (solution in BA/xylene) | — |
| Viscosity @ 23°C | 1,000 – 10,000 mPa·s | ASTM D445 |
| Acid Value | < 10 mg KOH/g | ASTM D1639 |
| Colour (Gardner) | ≤ 1 | ASTM D1544 |
| Glass Transition Temp (Tg) | 30 – 60°C (grade dependent) | DSC |
| Shelf Life | 12 months sealed, 5–30°C | — |
| HS Code | 3906.90 |
Applications
- Exterior Architectural Topcoats UAE & Saudi Arabia — Primary resin component in 2K PU topcoats for exterior building facades, structural steel, aluminium cladding, and architectural metalwork across UAE and Saudi Arabia.
- Industrial & Protective Maintenance Coatings — Used in high-performance 2K PU topcoats for petrochemical plants, pipelines, and industrial structures as the final protective and aesthetic layer over epoxy primer and intermediate coats.
- Transport & Vehicle Coatings — Component in refinish and OEM coatings for commercial vehicles, trucks, trailers, and transport equipment in UAE logistics and Saudi Arabia transport sectors.
- High-Gloss Decorative Metal Coatings — Enables factory-applied and field-applied coatings for architectural metal elements, gates, railings, and decorative structures where long-term appearance retention is required.
Key properties
- UV-stable formulations — long-term outdoor colour retention in GCC conditions
- High gloss and clarity in formulated topcoats
- Low yellowing under UV exposure
- Excellent weathering resistance
- Good chemical and stain resistance
- Compatible with HDI and IPDI aliphatic isocyanate hardeners
- Can be pigmented to any colour with stable hue retention
- Fast cure at ambient temperature with appropriate catalyst
Usage and recommendations
Use with aliphatic isocyanate (Part B). Mix ratio = OHEq of polyol / NCO eq of isocyanate = 1:1 equivalent ratio (slight NCO excess 1.05–1.1 recommended for full cure). DBTDL or bismuth-based catalyst at 0.01–0.1% on total formulation weight accelerates cure. Apply by spray for best results. Pot-life at GCC ambient temperatures (35–45°C): 30–60 minutes typical — work in shade. All surfaces must be primed with compatible two-component epoxy primer before topcoat application for maximum adhesion and corrosion protection.
Packaging
- 200 kg Steel Drum
- IBC 950–1,000 kg
- Custom packaging available
Storage and shelf life
Store in sealed containers at 5–30°C away from moisture, heat, and light. Keep containers sealed when not in use. Shelf life: 12 months from manufacture date.