VINNAPAS® 550 ED

• Cement Admixtures
• Primer
• Two Component Cementitious Waterproofing Membrane

Two-component waterproofing membranes, primers & cement admixes are the most important applications for VINNAPAS ® 550 ED. In theses applications VINNAPAS® 550 ED improves adhesion, abrasion resistance and flexural strength. For enhanced compressive and flexural strength, we recommend adding a suitable defoaming agent or modifying the dry
component with a powder defoamer.

Processing:

VINNAPAS® 550 ED can be blended with most VINNAPAS® dispersions and many other aqueous polymer dispersions in any ratio. When blending, it is important to adjust the pH of both dispersions which are to be blended in a pH range in which both dispersions are stable. Storage tests should be carried out to check the compatibility of the mixture.

• VINNAPAS® 550 ED is an aqueous dispersion of vinyl acetate and ethylene copolymer with a 53% solids content.
• The dispersion is produced without the use of plasticizers.
• VINNAPAS® 550 ED is particulary suited for modifying mineral mortars. It improves the adhesion to inorganic and organic substrates, as well as abrasion resistance und flexural strength.

VINNAPAS® 550 ED is supplied in non-returnable PE drums of 150 kg capacity (standard dispatch quantity: only fully-loaded pallets 750 kg), non-returnable containers of 1 t capacity and road tankers.

• 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 manufacture if stored in the original, unopened containers at temperatures between 5 and 30°C. 
• 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. Measures should also be taken to ensure cleanliness of the tanks and pipes. In unstirred tanks, a layer of preservative-containing 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.