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ETONIS® 7161 A
ETONIS® 7161 A is a poly(vinyl alcohol) stabilized vinyl acetate-ethylene copolymer dispersion with a glass transition temperature (Tg) of +17 °C that offers higher heat resistance, tensile strength, flexibility, and adhesion in asphalt-emulsion based applications.
Properties
ETONIS® 7161 A is ideally suited to modify Asphalt emulsion and can be used in conjunction with additives such as emulsifiers, defoamers, thickeners, clay, and other fillers. With a proper selection of emulsifier in the system, it is compatible with both anionic and cationic asphalt emulsion. ETONIS® 7161 Aexhibits very high wet tack and high thickening response. Because of its poly(vinyl alcohol) stabilization and excellent mechanical stability, this dispersion has clean machining ability. The higher Tg gives the dried adhesive film both very high heat resistance and tensile strength with greater flexibility. ETONIS® 7161 A improves rheology, softening point, elastic recovery and tensile strength thus imparting excellent abrasion resistance, adhesion, and fuel resistance in surface treatment applications.
Specific features
• Low formaldehyde content
• Produced without APEO
Data sheets
ETONIS® 7161 A is suitable for modifying both anionic and cationic asphalt emulsions with a proper selection of emulsifier in the system. It is used to improve mechanical and rheological properties of surface treatment applications. In asphalt emulsion, ETONIS® 7161 A improves rheology, adhesion, tensile strength, flexibility, elastic recovery and oil resistance.
ETONIS® 7161 A is compatible with other poly(vinyl alcohol) and surfactant stabilized vinyl acetate-based dispersions and other latex dispersions. It is also compatible with rubber latices, water- based urethane dispersions, solvents, plasticizers, and other modifiers.
ETONIS® 7161 A can be incorporated into asphalt emulsion through addition to the soap solution (batch process) or via co-milling (continuous process). It may also be added directly to the asphalt emulsion with minimal stirring. It may be added to hot asphalt first to make polymer modified asphalt prior to making asphalt emulsion. It can also be post added to driveway sealers or seal coat applications. The amount of ETONIS® 7161 A needed to modify asphalt emulsion depends on the specification criteria and typically ranges from 1.0 % – 5.0 % relative to the asphalt emulsion.
Storage
When the dispersion is stored in tanks, proper storage conditions must be maintained. If stored in the original, unopened containers at cool (below 30 °C), but frost-free temperatures the product has a shelf life of 9 months from the date of manufacture. 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 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 resin) is recommended. As polymer dispersions may tend to superficial film formation, skins or lumps may form during storage or transportation. Filtration is therefore 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. To maintain proper storage conditions appropriate measures should also be taken to ensure cleanliness of the tanks and pipes. In a storage tank in which the product is not stirred, it is advisable to contact your biocide representative/supplier. Proper procedures must be set up in order to prevent microbial attack between necessary periodic tank cleaning and sanitization. These procedures will vary, since loading and unloading practices in each storage situation will differ slightly. 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.
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United Arab Emirates
+971 4 709-9911 (Fax)
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