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High-solids, water-reducible aliphatic polyurethane dispersion offering excellent balance of hardness and flexibility.
Outstanding UV resistance and gloss retention for long-term exterior durability.
Low VOC formulation compliant with stringent environmental regulations including EU REACH and US EPA guidelines.
Good compatibility with acrylic and polyester co-resins for hybrid coating systems.
Excellent adhesion to diverse substrates including metals, plastics, and pretreated wood.
Architectural coatings for façades and cladding systems.
Industrial maintenance coatings for metal structures and equipment.
Waterborne topcoats for high-end furniture and interior wood finishes.
Coatings for plastic components in automotive interiors and consumer electronics.
Protective clearcoats for signage and decorative panels.
| Chemical Type | Aliphatic polyurethane dispersion (anionic) |
| Product Form | Opaque white liquid |
| Appearance | Homogeneous milky dispersion |
| Solids Content (wt%) | 40.0 ± 1.0% |
| pH (at 25°C) | 7.8 – 8.5 |
| Viscosity (mPa·s, Brookfield RVT, #2 spindle, 20 rpm) | 1,200 – 2,500 |
| Minimum Film Formation Temperature (MFFT) | ≈ 15°C |
| Primary Applications | Waterborne high-performance topcoats and protective clearcoats |
Q1: What is the primary function of DAOTAN TW 7000/40WA in polyurethane systems?
A: DAOTAN TW 7000/40WA is a water-dispersible polyurethane resin designed primarily as a film-forming binder and performance modifier in waterborne PU coatings and inks. It contributes to improved flexibility, adhesion to diverse substrates, and balanced hardness–toughness properties without requiring organic co-solvents.
Q2: Is DAOTAN TW 7000/40WA compatible with other waterborne resins or additives?
A: Yes, it demonstrates good compatibility with common waterborne acrylics, vinyl acetate copolymers, and selected crosslinkers such as aziridines or carbodiimides. Compatibility should always be verified experimentally in the final formulation due to sensitivity to pH, ionic strength, and shear history.
Q3: How should DAOTAN TW 7000/40WA be stored and handled to maintain stability?
A: Store in tightly sealed containers at temperatures between 5 °C and 30 °C, protected from freezing and direct sunlight. Avoid prolonged exposure to high humidity or contamination with incompatible materials. Stir gently before use to ensure homogeneity, but avoid excessive high-shear mixing that may destabilize the dispersion.
Q4: Can DAOTAN TW 7000/40WA be used in food-contact or regulated applications?
A: DAOTAN TW 7000/40WA is not pre-certified for direct food contact. Its suitability for regulated end uses depends on full formulation assessment, processing conditions, and compliance verification by the end-user against applicable regional requirements—including migration testing where required.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
