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Desmodur® 44V40L

Mixture of diphenylmethane-4,4'-diisocyanate with isomers and homologoues of higher functionality. NCO content 31 %

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About

Product Types

  • MDI
  • Aromatic polyisocyanate

Material

No data available

General Characterization

Desmodur 44V40L is a liquid, dark brown mixture of diphenylmethane-4,4'-diisocyanate (MDI) with isomers and homologues of higher functionality. It is used in conjunction with polyols to produce rigid polyurethane foams.

Storage Conditions

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

Sampling

Exposure to moisture must be prevented when taking product samples

Packaging Type

Drums, IBCs, tank containers and tank wagons

Technical Properties & Datasheets

Property Name Test Method Unit Value
Specific heat (cp) kJ/kgK approx. 1.51
Density 20 °C DIN 51757 g/cm³ approx. 1.23
Coefficient of thermal expansion K-1 6.59 . 10-4
Phenylisocyanate content MDI-01-09 ppm max. 50

Property Name Test Method Unit Value
Acidity MDI-01-03 ppm HCI max. 300
NCO content MDI-01-01 % by wt. 30.0 - 32.0
Viscosity 25 °C*) MDI-01-02 mPa*s 350 - 450

Downloads

Technical Data Sheet
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Safety Data Sheet
No direct download available, please visit www.productsafetyfirst.covestro.com
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