English
Español
tiếng việt
русский
Highly flexible aliphatic polyurethane dispersion with excellent low-temperature film formation.
Outstanding resistance to yellowing, UV exposure, and weathering due to non-aromatic chemistry.
Good compatibility with acrylics, cellulose derivatives, and common waterborne crosslinkers.
Low VOC content, compliant with stringent environmental regulations for industrial coatings.
Smooth, high-gloss finish with excellent substrate wetting and adhesion on plastics and metals.
Waterborne topcoats for automotive plastic trim and interior components.
Protective clear coats for architectural metal cladding and façade systems.
Flexible coatings for synthetic leather and textile finishing.
High-performance overprint varnishes for packaging films and labels.
Industrial maintenance coatings for equipment requiring abrasion and chemical resistance.
| Chemical Type | Aliphatic polyurethane dispersion (anionic) |
| Product Form | White to slightly yellow aqueous dispersion |
| Appearance | Opaque liquid, homogeneous without sediment |
| Solids Content (wt. %) | 30 ± 1% |
| pH (at 25°C) | 8.0 – 8.8 |
| Viscosity (mPa·s, Brookfield RVT, #2 spindle, 20 rpm) | 150 – 400 |
| Density (g/cm³, 20°C) | 1.01 – 1.03 |
| Minimum Film Formation Temperature (MFFT) | ≤ 5°C |
Q1: What is the primary function of DAOTAN TW 6439/30WA in polyurethane systems?
A: DAOTAN TW 6439/30WA is a waterborne polyurethane dispersion designed to serve as a film-forming binder or functional modifier—enhancing flexibility, abrasion resistance, and substrate adhesion in coatings and sealants, particularly where low VOC and aqueous processing are required.
Q2: Is DAOTAN TW 6439/30WA compatible with common crosslinkers used in industrial PU coatings?
A: Yes—it is formulated for compatibility with standard aqueous or blocked isocyanate crosslinkers, as well as aziridine- and carbodiimide-based systems. Compatibility testing under actual formulation conditions is recommended to confirm stability and performance.
Q3: Can this resin be used in direct food-contact applications?
A: DAOTAN TW 6439/30WA is not pre-certified for direct food contact. Its suitability for such applications depends on full regulatory review—including final formulation, processing conditions, and intended use—and requires validation by the end-user against applicable regional food safety regulations.
Q4: How should DAOTAN TW 6439/30WA be stored and handled to maintain stability?
A: Store in tightly sealed containers at temperatures between 5 °C and 30 °C, avoiding freezing and prolonged exposure to high heat or direct sunlight. Stir gently before use; do not dilute with unbuffered water without prior compatibility assessment.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
Have a Questions? Call Us:
Add:
Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
