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Waterborne aliphatic polyurethane dispersion offering excellent UV resistance and long-term gloss retention.
Low VOC formulation compliant with stringent global environmental regulations including EU REACH and US EPA guidelines.
Good hydrolytic stability and freeze-thaw resistance for reliable storage and handling in diverse climatic conditions.
Excellent compatibility with acrylic dispersions and crosslinkers, enabling versatile hybrid coating systems.
Provides balanced film hardness, flexibility, and abrasion resistance for demanding protective coatings.
High-performance waterborne wood coatings for furniture, flooring, and interior joinery.
Architectural coatings requiring superior weatherability and low-emission profiles.
Industrial maintenance coatings for metal substrates in mild-to-moderate corrosion environments.
Plastic coatings for automotive interior trim and consumer electronics housings.
Leather finishing systems where soft touch, breathability, and chemical resistance are critical.
| Chemical Type | Aliphatic waterborne polyurethane dispersion |
| Product Form | Liquid, ready-to-use dispersion |
| Appearance | Opaque white to slightly bluish milky liquid |
| pH (at 25°C) | 7.5 – 8.5 |
| Solids Content (wt %) | 38 – 42 |
| Viscosity (mPa·s, Brookfield LVT, #2 spindle, 20 rpm, 25°C) | 150 – 500 |
| Minimum Film Formation Temperature (MFFT) | ≈ 15°C |
| Freeze-Thaw Stability | Passes 3 cycles (−15°C for 16 h / 23°C for 8 h) |
Q1: What is the primary function of DAOTAN TW 6442/42WA in polyurethane coatings?
A: DAOTAN TW 6442/42WA is a waterborne polyurethane dispersion designed to enhance film formation, flexibility, and mechanical durability in high-performance topcoats—particularly where balanced hardness, scratch resistance, and low-temperature coalescence are required.
Q2: Is DAOTAN TW 6442/42WA compatible with common crosslinkers used in industrial PU systems?
A: Yes, it is formulated for compatibility with standard aliphatic isocyanate crosslinkers (e.g., HDI-based blocked or water-dispersible types), as well as melamine-formaldehyde and carbodiimide systems—subject to compatibility testing in the final formulation.
Q3: How does the “42WA” designation differ from the base TW 6442 grade?
A: The “42WA” variant features an optimized particle size distribution and rheological profile for improved application stability and leveling in waterborne wood and plastic coatings, while maintaining equivalent chemical resistance and adhesion performance.
Q4: Can DAOTAN TW 6442/42WA be used in direct food-contact applications?
A: It is not pre-approved for direct food contact; suitability depends on full formulation compliance with applicable regional regulatory frameworks and must be validated through migration testing and regulatory review by the end-user.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
