Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- CASE Ingredients Functions
Features & Benefits
- Labeling Claims
Applications & Uses
- Markets
- Compatible Substrates & Surfaces
- Adhesive & Sealant Type
- Application Details
Processing
VINNAPAS® 502 ND is a high-Tg product with higher solid content. It is especially suited for gypsum based joint fillers with good adhesion to paper band and excellent sandability. Furthermore, VINNAPAS® 502 ND is an excellent choice as binder in formulations for 1K ready-to-use tile adhesives suitable to surpass class D1 (EN 12004). VINNAPAS® 502 ND can also be used as a soil stabilizer by blending it with the soil followed by appropriate compaction or it can be applied typically for wind and rain erosion control.
Properties
- Physical Form
- Typical Properties
- Specifications
| Value | Units | Test Method / Conditions | |
| Appearance of the Dispersion Film | Clear | — | Visual |
| Density (at 20°C) | approx. 1.09 | g/cm³ | DIN EN ISO 2811-1 |
| Filler and Pigment Compatibility | Very good | — | Specific method |
| Glass Transition Temperature | approx. 18 | °C | Specific method |
| Minimum Film Forming Temperature | approx. 5 | °C | DIN ISO 2115 |
| Predominant Particle Size | approx. (1 - 3) | µm | Specific method |
| Protective Colloid (Emulsifier System) | Polyvinyl alcohol | — | — |
| Surface of the Dispersion Film | Tack free | — | Specific method |
| Value | Units | Test Method / Conditions | |
| Dynamic Viscosity (at 23°C) | 500 - 2500 | mPa·s | DIN EN ISO 2555 |
| pH | 3.5 - 5.0 | — | DIN/ISO 976 |
| Solids Content | 57 - 59 | % | DIN EN ISO 3251 |
Packaging & Availability
- Country Availability
- Regional Availability
Storage & Handling
- Shelf Life
- 6 Months
- Storage Information
- When the dispersion is stored in tanks, proper storage conditions must be maintained. The product has a shelf life of 6 months starting from the date of receipt if stored in the original, unopened containers at temperatures between 5 and 30°C.
- Iron or galvanized iron containers and equipment are not recommended. Corrosion could result in discoloration of the dispersion or blends made from it in further processing. We therefore recommend the use of containers and equipment made of ceramic, rubberized or enameled materials, appropriately finished stainless steel, or plastic (rigid PVC, polyethylene or polyester resin).
- As polymer dispersions may tend to superficial film formation, skins or lumps may be formed during storage or transportation. A filtration process is thus recommended prior to utilization of the product.
Preservation for Transport, Storage and further Processing
- The product is adequately preserved during transportation and storage if kept in the original, unopened containers. However, if it is transferred to storage tanks, the dispersion should be protected against microbial attack by adding a suitable preservative package. Measures should also be taken to ensure cleanliness of the tanks and pipes.
- In unstirred tanks, a layer of preservativecontaining water should be sprayed onto the surface of the dispersion to prevent the formation of unwanted skin and possible attack by microorganisms. The thickness of this water layer should be < 5 mm for low viscosity dispersions and up to 10–20 mm for high viscosity products.
- Proper procedures – periodic tank cleaning and sanitization – must be set up in order to prevent microbial attack. Contact your biocide representative/supplier for further plant hygiene recommendations. Measures should be taken to ensure that only clean air enters the tank when the dispersion is removed.
- Finished products manufactured from polymer dispersions usually also require preservation. The type and scope of preservation will depend on the raw materials used and the anticipated sources of contamination.
- The compatibility with other components and the efficacy of the preservative should always be tested in the respective formulation. Preservative manufacturers will be able to advise you about the type and dosage of preservative required.