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Technical data sheet |
| Curing Agent W3 |
Description
CURING AGENT W3 is a liquid polyisocyanate, emulsifiable in water. Acrylic and PU dispersion polymers can be efficiently cross-linked with this product.
Application
An increased resistance against heat, water, plasticizers and many organic solvents can be achieved with addition of 0,5 - 1,8% of CURING AGENT W3 to water compounds. This is very useful for many applications, like industrial coatings, adhesives, textile and leather finishing, etc.
Technical Specifications
| Method of analysis | MU | Standard | |
|---|---|---|---|
| 3 | Brookfield Viscosity 25°C | cps | 1,500 - 3,500 |
| 18 | NCO Contents | % | 18 - 19 |
Handling
CURING AGENT W3 can be added directly to the dispersions, just before final application. Pot life of compound depends on the total solid and on the temperature (it is lower than 12 hours).
Packing
50 Kg metallic drums.
Storing
Polyisocyanates react with water, including atmospheric moisture, with formation of carbon dioxide, which can cause too high pressures in closed containers and form solid insoluble polyureas, which can block pipes, valves, etc. CURING AGENT W3 must be stored in well closed original plastic drums or aluminum/glass bottles, at temperatures between 10°C and 30°C. At higher temperatures it can develop hazardous vapors. Opened drums must be protected from moisture penetration ( use silica gel drying tube or nitrogen atmosphere systems). In original drums shelf life is at least 6 months, with a slight increase of viscosity.