WANWEI EP 17
[Introduction]
WANWEI EP 17 is an aqueous, plasticizer-free polymer dispersion produced from the monomers vinyl acetate and ethylene.
[Properties]
• Good adhesion to various plastic surfaces
• Permanently flexible adhesive joints
• High cohesion
[Specification]
| Property | Condition | Value | Method |
|---|---|---|---|
| Solids content | – | 59 – 61 % | DIN EN ISO 3251 |
| Viscosity, dynamic | 23 °C | 2800 – 4800 mPa·s | DIN EN ISO 2555 |
| pH | – | 4.0 – 5.0 | DIN/ISO 976 |
[General Characteristics]
| Property | Condition | Value | Method |
|---|---|---|---|
| Minimum film forming temperature | – | approx. 0 °C | DIN ISO 2115 |
| Frost resistance | – | protect from freezing | specific method |
| Protective colloid / emulsifier system | – | Polyvinyl alcohol, surfactants | – |
| Filler compatibility | – | very good | specific method |
| Appearance of the dispersion film | – | opaque | Visual |
| Surface of the dispersion film | – | slightly tacky | – |
| Glass transition temperature | – | approx. 3 °C | specific method |
[Applications]
• Film-to-Wood lamination
• Flooring Installation
• Paper Packaging & Converting
• Transportation
[Storage]
When the dispersion is stored in tanks, proper storage conditions must be maintained. WANWEI EP 17 has 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. Any longer periods for the maximum storage period that may be described in the Certificate of Analysis which accompanies each shipment of WANWEI EP 17, take preference over this suggestion in which case the time period stated in the Certificate of Analysis shall be solely authoritative. Iron or galvanized-iron equipment and containers are not recommended because the dispersion is slightly acidic. Corrosion may result in discoloration of the dispersion or its blends when further processed. Therefore the use of containers and equipment made of ceramics, rubberized or enameled materials, appropriately finished stainless steel, or plastic (e.g. rigid PVC, polyethylene or polyester resins) is recommended. As polymer dispersion may tend to superficial film formation, skins or lumps may form during storage or transportation. Filtration is therefore recommended to utilization prior of the product.