Description
CURING AGENT CH-D is a liquid diisocyanate, designed to cross-link polyols (polyethers and polyesters), polyurethanes and elastomers (natural rubber, chloroprene, ...).
Application
It cross-links polymers/elastomers used as coatings, adhesives, primers, paints, etc, increasing strength, cohesion, adhesion to substrates and chemical/physical resistance.
Technical Specifications
| Method of analysis | MU | Standard | |
|---|---|---|---|
| 3 | Brookfield Viscosity 25°C | mPa.s | 160 - 240 |
| 18 | NCO Content | % | 31 - 33 |
Handling
In solvent borne primers, add 3-9% of CURING AGENT CH-D referred to total solids.
In natural rubber (such as our TACKSOL series) or acrylic solvent borne adhesives, add 1-3% of CURING AGENT CH-D on the total solids of the adhesive.
Preferably pre-dilute CURING AGENT CH-D in solvents such as toluene or ethylacetate. Verify the compatibility of the solvent of the dilution with the product to crosslink. Add CURING AGENT CH-D to polymer/solution and properly stir to complete dissolution. Reaction starts immediately, so we recommend using the product immediately after the activation. The crosslinking mechanism depends on different parameters, such as adhesive concentration, amount of crosslinker, temperature. We suggest to check the curing conditions in advance, in order to avoid spoiling material.
Packaging
250 kg metallic drums, 1250 kg (1000 litres) plastic tank.
Storing
Polyisocyanates react with water, including atmospheric moisture, forming carbon dioxide, which can cause excessive pressure in closed containers and form solid insoluble polyureas, which can block pipes, valves, etc.
CURING AGENT CH-D must be stored in well sealed original containers, at temperatures between 0°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 in time.
Use within 6 months from production date (unopened and in the original packaging).
| Mod. DT3002E | Creation date: 5/30/2017 | Revision: 1 | Revision date: 30 May 2017 |
Above information is reliable, but does not constitute warranty.
