WANWEI EP 401
[Introduction]
WANWEI EP 401 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
• Good reemulsification
• High setting speed
• Suited for nozzle application
[Specification]
| Property | Condition | Value | Method |
|---|---|---|---|
| Solids content | – | 54 – 56 % | DIN EN ISO 3251 |
| Viscosity, dynamic | 23 °C | 1700 – 3300 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 | – |
| Filler compatibility | – | very good | specific method |
| Appearance of the dispersion film | – | opaque | Visual |
| Surface of the dispersion film | – | slightly tacky | – |
| Glass transition temperature | – | approx. -7.0 °C | specific method |
[Applications]
• Film-to-Wood lamination
• Flooring Installation
• Paper Packaging & Converting
[Storage]
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. Any longer periods for the maximum storage period that may be described in the Certificate of Analysis which accompanies each shipment of the product, 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 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.