Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- CASE Ingredients Functions
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
Applications & Uses
- Applications
- Compatible Polymers & Resins
- Applications
- 3D Lamination (Membrane Press)
- Film-to-Wood lamination
- Textile Lamination
- Application Details
Application
The excellent flow properties and very high setting speed of VINNAPAS® EP 645 make it ideal as a co-blending dispersion for polyurethanes or other polymers in a variety of medium- to high-speed machine applications. Primary applications include synthetic leather market adhesive, between vinyl laminating and textile. VINNAPAS® EP 645 has been used successfully in synthetic leather adhesives for PVC sheet and textile or polyurethane sheet and textile, which benefits from its high cohesion strength.
Properties
- Physical Form
- Typical Properties
- Specifications
- Properties
VINNAPAS® EP 645 is produced without addition of plasticizers and can be used to produce adhesives that deliver bonding that remains permanently with flexibility and resistance to aging. VINNAPAS® EP 645 shows better adhesive and cohesive strength at elevated temperatures a versatile balance that renders adhesives with very good heat resistance. And when plasticized, the heat resistance is less adversely affected than with other VINNAPAS® VAE copolymers. VINNAPAS® EP 645 also shows high water resistance.
| Value | Units | Test Method / Conditions | |
| Appearance of the Dispersion Film | Clear glossy | — | Visual |
| Density (at 20°C) | approx. 1.07 | g/cm³ | Specific method |
| Filler and Pigment Compatibility | Excellent | — | Specific method |
| Glass Transition Temperature | approx. 5 | °C | Specific method |
| Minimum Film Forming Temperature | 0 | °C | Specific method |
| Predominant Particle Size | approx. 1 | µm | Specific method |
| Protective Colloid (Emulsifier System) | PVOH | — | — |
| Surface of the Dispersion Film | Tack free | — | Specific method |
| Value | Units | Test Method / Conditions | |
| Dynamic Viscosity (at 25°C) | 4000 - 9000 | mPa·s | Specific method |
| pH | 4.0 - 6.0 | — | Specific method |
| Solids Content | 54 - 56 | % | Specific method |
Packaging & Availability
- Country Availability
- Packaging Type
- Regional Availability
- Packaging Information
- 200 Kg Steel drum
- 220 Kg Steel drum
- 1 MT IBC
- 1.1 MT IBC
- 1 MT Returnable tote
- Flexi bag.
- Tank lorry
Storage & Handling
- Shelf Life
- 9 Months
- Storage Information
- When the dispersion is stored in tanks, proper storage conditions must be maintained. The product has a shelf life of 9 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.