WANWEI EZ 3112
[Introduction]
WANWEI EZ 3112 is a protective colloid stabilized dispersion of a vinyl acetate, ethylene and vinyl ester terpolymer.
WANWEI EZ 3112 is free from alkyl phenol ethoxylate (APEO) containing compounds.
[Properties]
• Fire resistance classes up to F120 achievable
• Significant foam development and expansion
• Supports formulations without coalescing solvents
• Suitable for formulating very-low-VOC (< 1 g/l) intumescent coatings
• Produced without the use of APEOs
[Specification]
| Property | Condition | Value | Method |
|---|---|---|---|
| Solids content | – | 49 – 51 % | DIN EN ISO 3251 |
| Viscosity, dynamic | 23 °C | Brookfield, spindle 3 / 20 rpm | 1800 – 4000 mPa·s | DIN EN ISO 2555 |
| pH | – | 4.5 – 5.5 | DIN/ISO 976 |
[General Characteristics]
| Property | Condition | Value | Method |
|---|---|---|---|
| Electrolyte stability | – | very good | specific method |
| Density | – | approx. 1.05 g/cm³ | DIN EN ISO 2811-1 |
| Minimum film forming temperature | – | approx. 0 °C | DIN ISO 2115 |
| Frost resistance | – | protect from freezing | specific method |
| Predominant particle size | – | approx. 0.4 µm | specific method |
| Protective colloid / emulsifier system | – | ionic and nonionic surfactants and polymer compounds | – |
| Filler compatibility | – | very good | specific method |
| Appearance of the dispersion film | – | clear, glossy | Visual |
| Surface of the dispersion film | – | tack free | specific method |
| Glass transition temperature | – | approx. 2 °C | DSC, specific method |
[Applications]
• Intumescent Coatings
[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.