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High-performance aliphatic polyurethane dispersion with excellent UV resistance and gloss retention.
Waterborne formulation enabling low VOC content and compliance with stringent environmental regulations.
Good film-forming properties and outstanding flexibility for demanding coating applications.
Enhanced chemical resistance to dilute acids, alkalis, and common solvents after full cure.
Compatible with acrylic and polyester co-resins for hybrid system optimization.
High-end architectural coatings requiring long-term color stability and weatherability.
Industrial maintenance coatings for metal substrates in outdoor environments.
Wood coatings for interior and semi-exposed furniture and flooring.
Plastic coatings for automotive interior trim and consumer electronics housings.
Water-based two-component (2K) topcoats for premium protective finishes.
| Chemical Type | Aliphatic polyurethane dispersion |
| Product Form | White to off-white aqueous dispersion |
| Appearance | Opaque liquid, homogeneous without sediment |
| Solids Content (wt %) | 40 ± 1 |
| pH | 7.5 – 8.5 |
| Viscosity (mPa·s, Brookfield RVT, Spindle #3, 20 rpm, 25°C) | 500 – 1500 |
| Density (g/cm³, 25°C) | 1.02 – 1.06 |
| Primary Applications | Waterborne high-performance topcoats and clearcoats |
Q1: What is the primary function of DAOTAN TW 6429/40WA in polyurethane coating systems?
A: DAOTAN TW 6429/40WA is a waterborne polyurethane dispersion designed to enhance film formation, flexibility, and mechanical durability in low-VOC, high-performance coatings—particularly where balanced hardness, elongation, and chemical resistance are required.
Q2: Is DAOTAN TW 6429/40WA compatible with common waterborne acrylic or polyester dispersions?
A: Yes, it exhibits good compatibility with many standard waterborne acrylics and polyester dispersions, enabling hybrid formulations for improved performance. Compatibility testing under actual formulation conditions—including pH, ionic strength, and shear history—is recommended prior to full-scale use.
Q3: How should DAOTAN TW 6429/40WA be stored and handled to maintain stability?
A: Store in original sealed containers at temperatures between 5 °C and 30 °C, away from freezing and direct sunlight. Avoid prolonged exposure to high humidity or contamination with incompatible solvents or strong acids/bases. Stir gently before use to ensure homogeneity without introducing air bubbles.
Q4: Can this resin be used in coatings intended for indirect food contact applications?
A: While DAOTAN TW 6429/40WA is formulated without intentionally added heavy metals or known allergens, its suitability for indirect food contact depends on final formulation compliance and regulatory evaluation by the end-user. It is not pre-approved for such use and requires full migration and safety assessment per applicable regional requirements.
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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
