Desmodur® 44 V 10 L can be used in combination with polyol for the manufacturing of polyurethane products.
Applications
Sampling
Moisture access must be prevented when taking product samples.
Specification
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Acidity | ≤ 350 | mg/kg | MDI-01-03 | |
| Dynamic viscosity | 25 °C | 100 - 140 | mPa·s | MDI-01-02 |
| NCO content | 30.5 - 32.5 | % | MDI-01-01 |
* Lengthy storage can lead to an increase in the viscosity of Desmodur® 44 V 10 L although in our experience this has no adverse effect on the processing properties of the product.
Typical Values
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Density | 20 °C | 1.24 | g/cm³ | EG A3 |
This data is provided as general information only and are not part of the product specifications.
Storage
Storage in original sealed Covestro containers.
Recommended storage temperature: 0 - 30 °C.
Protect from moisture, heat and foreign material.
It must be ensured that the containers - including empty tanks and containers - are kept sealed.
Above all, contact with water must be prevented as it reacts with Desmodur® 44 V 10 L to form polyureas and carbon dioxide. During storage, sample withdrawal, transfer and processing of Desmodur® 44 V 10 L, the ingress of water in any form (damp containers, aqueous solvents, moist air) must be prevented as otherwise the formation of carbon dioxide may cause a dangerous increase in pressure in the tanks and containers. Furthermore, the formation of polyureas in Desmodur® 44 V 10 L may cause turbidity and possibly solid deposits which may then block filters, pumps and pipelines.
Storage time
Covestro represents that, for a period of 6 months following the day of shipment as stated in the respective transport documents, the product will meet the specifications or values set forth in chapter "Specification" above, what ever is applicable, provided that the product is stored in full compliance with the storage conditions set forth in and referenced under chapter "storage" above and is otherwise handled appropriately. The lapse of the 6 months period does not necessarily mean that the product no longer meets specifications or the set values. However, prior to using said product, Covestro recommends to test such a product if it still meets the specifications or the set values. Covestro does not make any representation regarding the product after the lapse of the 6 months period and Covestro shall not be responsible or liable in any way for the product failing to meet specifications or the set values after the lapse of the 6 months period.
Processing
Desmodur® 44 V 10 L may undergo partial crystallization at temperatures below 0 °C. The product can, however, be brought back into the liquid state by heating the entire contents of the drum for a short time to a maximum of 70 °C, although this may lead to an increase in the solids content.
