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Desmodur® MP-101

Desmodur MP-101 is a diphenylmethane diisocyanate (MDI)-terminated polyether prepolymer based on polypropylene ether glycol (PPG).

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Allgemeine Charakterisierung

Desmodur MP-101 is a diphenylmethane diisocyanate (MDI)-terminated polyether prepolymer based on polypropylene ether glycol (PPG).

Lagerungsbedingungen

Desmodur MP-101 should be stored in tightly sealed original containers and protected from moisture, heat, and foreign materials. Recommended storage temperature is 15º-35ºC.
It will react slowly with water to form ureas and CO2 gas, which may cause sealed containers to expand and rupture. Partially filled containers should be blanketed with dry nitrogen.
Desmodur MP-101 prepolymer must not be allowed to freeze. Exposure to temperatures less than 15°C, even for short periods of time, can result in the formation of solid material. Prolonged storage of solid or partially solid Desmodur MP-101 prepolymer may result in the formation of MDI dimer in amounts which exceed its solubility in the prepolymer at normal storage temperatures. This can make the product unusable.
If solids should form because of exposure of Desmodur MP-101 prepolymer to lower temperatures, it may be possible to reliquify the product by reheating. Use a well-ventilated oven for the minimum time necessary to render it clear. The temperature of the product should not exceed 60°C. Agitation or drum rollers are recommended to avoid excessive local heating, which will degrade the prepolymer.
Significant amounts of MDI dimer may form during the heating process. As a result, the remelted prepolymer may be cloudy, and the processing behavior and properties of the final product may be affected.

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Technische Eigenschaften & Datenblätter

Name der Eigenschaft Prüfverfahren Einheit Wert
Viscosity at 25oC mPa∙s 2000 - 3000
NCO content % 9.65 - 10.24

Name der Eigenschaft Prüfverfahren Einheit Wert
Flash point PMCC °C 216
Density at 25oC lb/gal 9.1
Appearance Yellow, viscous liquid
Specific gravity at 25oC 1.09

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