CURING AGENT MDI is a liquid polyisocyanate. Polyols (polyethers, polyesters), PU and elastomers (natural rubber, chloroprene,...) can be efficiently cross-linked by this product.
Method of analysis | MU | Standard | |
---|---|---|---|
18 | NCO Contents | % | 30.5 - 32.5 |
In solvent based primers: add 3-6% of CURING AGENT MDI referred to total solids.
In natural rubber or acrylic solvent based adhesives: add 1-2% of CURING AGENT MDI on the total solids of adhesives.
Since curing starts immedialtely after the addition of CURING AGENT MDI, the product must be used within 24 h.
Pot-life of compound depends on total solids and on temperature.
250 kg metallic drums.
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 MDI must be stored in well closed original containers, 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.
Mod. DT3002E | Creation date: 10/5/2004 | Revision: 2 | Revision date: 2 Mar 2005 |