Desmodur® E 21 by Covestro is a solvent-free, medium viscosity aromatic polyisocyanate prepolymer based on diphenylmethane diisocyanate (MDI). It acts as a binder. It shows good compatibility with ethyl acetate, butyl acetate, 1 methoxypropylacetate-2, xylene, Shellsol® A and Solvesso® 100. It is used in moisture-curing, one-component, fast bonding, solvent-free adhesives for wood, metal and plastic. Desmodur® E 21 has a shelf life of 6 months.
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Desmodur® E 21 properties
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| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Amine Hydrogen Equivalent Weight (AHEW) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Density | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Flash Point | 0.0 Visible After Login | Visible After Login | Visible After Login |
| NCO content | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Viscosity | 0.0 Visible After Login | Visible After Login | Visible After Login |