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Excellent abrasion and scratch resistance for demanding surface protection.
Superior flexibility and impact resilience at low temperatures.
Fast room-temperature curing with balanced pot life and film formation.
Good chemical resistance to oils, solvents, and mild acids.
Low VOC formulation compliant with industrial environmental standards.
Protective coatings for automotive interior trim and dashboards.
Flexible topcoats for industrial rubber and thermoplastic elastomer (TPE) parts.
Surface finishing of electronic enclosures requiring soft-touch feel and durability.
Coating binder for high-performance synthetic leather substrates.
Clear overprint varnish for decorative laminates and composite panels.
| Chemical Type | Aliphatic polyurethane dispersion (anionic, water-based) |
| Product Form | Liquid, ready-to-use aqueous dispersion |
| Appearance | Translucent milky white liquid |
| Solids Content | 35 ± 1 wt% |
| pH (25°C) | 7.8 – 8.4 |
| Viscosity (Brookfield, LVT, #2 spindle, 60 rpm, 25°C) | 1,200 – 1,800 cP |
| Density (25°C) | 1.02 – 1.05 g/cm³ |
| Minimum Film Formation Temperature (MFFT) | 12 – 15°C |
Q1: What is the primary function of Arakawa AL-800 in polyurethane formulations?
A: Arakawa AL-800 is a specialty polyurethane resin designed to act as a reactive modifier or crosslinking aid, enhancing film hardness, chemical resistance, and mechanical durability in two-component PU systems—particularly in high-performance coatings and adhesives.
Q2: Is AL-800 compatible with both aromatic and aliphatic isocyanate components?
A: Yes, AL-800 demonstrates broad compatibility with common aromatic and aliphatic isocyanates, including HDI trimer, IPDI, and TDI-based prepolymers. Compatibility should be confirmed via small-scale formulation trials under intended processing conditions.
Q3: How does AL-800 affect pot life and cure kinetics in 2K PU systems?
A: AL-800 typically extends working time slightly compared to conventional polyol blends while maintaining robust ambient- or heat-assisted cure development. Its reactivity profile allows for balanced pot life and final property build, especially in industrial coating applications requiring extended application windows.
Q4: Can AL-800 be used in solvent-free or low-VOC formulations?
A: Yes—AL-800 is formulated for use in solvent-free, high-solids, and water-reducible polyurethane systems. It contributes to viscosity control and film formation without relying on volatile organic carriers, supporting modern regulatory and sustainability goals.
Q5: What storage conditions are recommended to maintain AL-800 stability?
A: Store AL-800 in tightly sealed containers at temperatures between 5 °C and 30 °C, away from moisture, direct sunlight, and strong oxidizing agents. Prolonged exposure to humidity or elevated temperatures may lead to premature urethane formation or viscosity increase.
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E-mail: wangxingqiang@ericwchem.com
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