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Waterborne polyurethane dispersion offering excellent film formation at ambient temperature.
Low VOC content compliant with stringent environmental regulations for industrial coatings.
Superior flexibility and abrasion resistance ideal for demanding substrate applications.
Good compatibility with acrylic dispersions and crosslinkers for hybrid formulation design.
Stable rheology and storage stability up to 12 months at 5–30 °C in sealed containers.
Leather finishing topcoats requiring high gloss and scuff resistance.
Flexible plastic coatings for automotive interior trim components.
Textile coatings delivering soft hand feel and wash-fast performance.
Wood coatings for furniture and cabinetry where low-odor, water-based systems are specified.
Industrial maintenance coatings for light-duty metal and composite substrates.
| Chemical Type | Aliphatic waterborne polyurethane dispersion |
| Product Form | Liquid dispersion |
| Appearance | Opaque white to off-white liquid |
| pH (at 25 °C) | 7.5–8.5 |
| Solids Content (wt%) | 35 ± 1 |
| Viscosity (mPa·s, Brookfield RVT, #2 spindle, 20 rpm, 25 °C) | 500–1500 |
| Density (g/cm³, 20 °C) | 1.02–1.05 |
| Minimum Film Formation Temperature (MFFT) | ≈ 10 °C |
Q1: What is the primary function of DAOTAN TW 6493/35WA in polyurethane systems?
A: DAOTAN TW 6493/35WA is a waterborne polyurethane dispersion designed to serve as a film-forming binder or reactive modifier in high-performance coatings and adhesives. It contributes flexibility, abrasion resistance, and good low-temperature performance while maintaining compatibility with common aqueous formulation components.
Q2: Is DAOTAN TW 6493/35WA compatible with common crosslinkers used in waterborne PU systems?
A: Yes, it is formulated to be compatible with standard aqueous crosslinkers such as aziridine, carbodiimide, and blocked isocyanate types. Compatibility and reactivity should be verified experimentally within the final formulation, as performance depends on pH, solids content, and co-solvent selection.
Q3: How does DAOTAN TW 6493/35WA perform in terms of storage stability and freeze-thaw resistance?
A: The resin exhibits good storage stability under recommended conditions (typically 5–30 °C, protected from freezing). It is not inherently freeze-thaw stable; prolonged exposure to sub-zero temperatures may cause irreversible coagulation or viscosity changes. Stabilization additives or formulation adjustments may be required for demanding logistics environments.
Q4: Can DAOTAN TW 6493/35WA be used in direct food-contact applications?
A: DAOTAN TW 6493/35WA is not pre-approved for direct food contact. Its suitability for such applications depends on full regulatory evaluation of the final cured film—including migration testing and compliance with applicable regional frameworks—and must be confirmed by the formulator in consultation with regulatory experts.
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E-mail: wangxingqiang@ericwchem.com
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