Covestro (formerly Bayer) Desmodur 2460M liquefied MDI MDI-50 101-68-8
Product Features
Diphenylmethane diisocyanate monomer with high 2,4′-isomer content, stable against storage discoloration.
Prepolymer formulations for one- and two-component polyurethane coatings and adhesives and related applications.
Desmodur® 2460M is a mixture of isomers of diphenylmethane diisocyanate monomer and is liquid above 20°C.
Storage and handling are simpler than 4,4′-isomers that are solid at room temperature (such as Desmodur® 44M, Desmodur® 44MC).
The supplied form does not contain solvents and is a colorless to yellow low-viscosity liquid at temperatures above 20°C, and crystallizes at lower temperatures.
Specifications
|
Features |
Value |
Unit |
Test method |
|
2,2′-MDIMonomer content |
≤ 0.8 |
% |
MDI-01-06 |
|
2,4′-MDIMonomer content |
hPa |
|
|
|
Phenyl isocyanate content |
≤ 10 |
ppm |
2011-0489801-95 |
|
Viscosity@25°C |
12±2 |
mPa·s |
2011-0313703-95 |
|
Purity (MG 250) |
≥ 99.5 |
%(by weight) |
2011-0248603-94 |
*This data is general information and is not part of the product manual.
Processing
You must ensure that all containers – including empty ones – are sealed at all times. Most importantly, since Desmodur® 2460M reacts with water to form polyurea and carbon dioxide, it must be protected from contact with water. During the storage, sampling, transfer and processing of Desmodur® 2460M, moisture must be prevented from entering in any form (humid containers, anhydrous solvents, humid air). Otherwise, the carbon dioxide generated will cause a pressure increase in the storage tank and container. High, causing danger. Furthermore, the formation of polyurea in Desmodur® 2460M may cause turbidity and solid deposits, which can clog filters, pumps and lines.
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– Store in original Covestro sealed containers.
– Recommended storage temperature: 20~40℃.
– Protect from moisture, heat and foreign matter.
Provided that the product is stored in full compliance with the requirements in the “Storage” clause above and properly handled, the product shall comply with the above “specifications or characteristics within 6 months from the date of shipment stated on the transport document Specifications or characteristic values stated in the “Value” clause (as appropriate). If a product exceeds the above 6-month period, it does not mean that it no longer meets the specifications or the values set in the characteristic values. However, it is recommended that products more than 6 months from the date of shipment be tested before use to confirm whether they still meet the values set in the specifications or characteristic values. The manufacturer does not make any commitments for products that are more than 6 months from the date of shipment, nor does it assume any responsibility or liability for products that do not meet the specifications or the set values in the characteristic values.
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– Store in original Covestro sealed containers.
– Recommended storage temperature: 20~40℃.
– Protect from moisture, heat and foreign matter.
Provided that the product is stored in full compliance with the requirements in the “Storage” clause above and properly handled, the product shall comply with the above “specifications or characteristics within 6 months from the date of shipment stated on the transport document Specifications or characteristic values stated in the “Value” clause (as appropriate). If a product exceeds the above 6-month period, it does not mean that it no longer meets the specifications or the values set in the characteristic values. However, it is recommended that products more than 6 months from the date of shipment be tested before use to confirm whether they still meet the values set in the specifications or characteristic values. The manufacturer does not make any commitments for products that are more than 6 months from the date of shipment, nor does it assume any responsibility or liability for products that do not meet the specifications or the set values in the characteristic values.