Hauthane HD-4675
A hard, co-solvent free, aliphatic, polyester polyurethane dispersion.
Suggested Uses: HD-4675 was designed for topcoat applications on a wide variety of substrates, including concrete, metal, plastic and wood.
Characteristics:
- Contains no co-solvent
- Produces clear, durable films with low levels of co-solvent (<100 g/l)
- Excellent non-yellowing properties
- Good water and chemical resistance
- Produces tough, abrasion and mar resistant films
Physical Properties
| Solids | 38 % |
| Solids Tolerance | ± 1 % |
| Viscosity | 50 to 500 cps |
| pH | 7.0 to 9.5 |
| Density | 8.7 lb/gal |
| Softening Point | 345 ºF |
| Volatile Organic Compounds (VOC) Content (As Supplied) | 12 g/L |
| Sward Hardness | 46 |
Tensile Properties
| Elongation | 190 % |
| Tensile Strength | >5900 psi |
| 100 % Modulus | 4400 psi |
| Note | Tested at 2 Inches/Minute |
Application
| HD-4675 can be used as supplied or blended with acrylic emulsions for spray, dip or rotogravure applications. It can be thickened with associative thickeners for knife-over-roll or similar methods. |
Curing
Due to the co-solvent free nature of HD-4675, the addition of coalescing solvent is recommended to achieve optimal film formation. In ambient-cured systems the addition of 5 – 10 % coalescing solvent is suggested. Less coalescing solvent is required in heat-cured systems to attain comparable film properties. Typical drying temperatures and dwell times for aqueous coatings are sufficient to optimize film characteristics.
