44V20L is a liquid, dark brown polymeric isocyanate based on diphenylmethane-4,4'-diisocyanate (MDI) with isomers and homologues of higher functionality. It is used in conjunction with polyols to produce polyurethane.
| Value | Unit of measurement | Method | |
|---|---|---|---|
| NCO content | 30.5 - 32.5 | % by wt. | MDI-01-01 |
| Viscosity 25 °C* | 160 - 240 | mPa·s | MDI-01-02 |
| Acidity | max. 200 | ppm HCl | MDI-01-03 |
*) Lengthy storage can lead to an increase in the viscosity, although in our experience this has no adverse effect on the processing properties of the product.
| Value | Unit of measurement | Method | |
|---|---|---|---|
| Density 20 °C | approx. 1.23 | g/cm³ | DIN 51757 |
| Phenylisocyanate content | max. 50 | ppm | MDI-01-09 |
| Coefficient of thermal expansion | 6.59 . 10-4 | K-1 | |
| Specific heat (cp) | approx. 1.51 | kJ/kgK |
These values provide general information and are not part of the product specification
Recommended storage temperature: + 10 to + 30 °C (in exceptional cases up to 50°C)
Storage stability (ex works): 6 months if stored in moisture-tight drums
