DESMODUR® E 22

Desmodur® E 22 is an aromatic polyisocyanate prepolymer based on diphenylmethane diisocyanate. It is primarily used in the formulation of highly flexible one- and two-component polyurethane coatings and adhesives. Additionally, it can serve as a binder for flexible aggregates, such as rubber granules. Here are the key specifications and characteristics of Desmodur® E 22:

Characterization:

• Type: Aromatic polyisocyanate prepolymer based on diphenylmethane diisocyanate.
• Application: Formulation of highly flexible one- and two-component polyurethane coatings and adhesives, as well as a binder for flexible aggregates.

Specification:

• NCO Content: 8.6 ± 0.3%
• Viscosity at 23°C: 2,800 ± 400 mPa·s

Other Data:

• Equivalent Weight: 472 - 506
• Flash Point: > 200°C
• Density at 20°C: Approximately 1.08 g/cm³

Solubility/Thinnability:

• Desmodur® E 22 can be dissolved using PU grade solvents (< 0.05% water), but solutions formed must be tested for compatibility.

Properties/Applications:

• Flexibilization: Suitable for flexibilizing products like Desmodur® E 21/E 23 or similar ones.
• Binder: Can be used as a binder for rubber granules.
• Adhesives: Suitable for formulating solvent-free, moisture-curing one-component adhesives. It can also be used in combination with Baycoll to formulate two-component adhesives for bonding various materials such as wood, metal, and plastic.

Storage:

• Should be stored in its original sealed Covestro container at temperatures between 10 - 30°C, protected from moisture, heat, and foreign material.

Desmodur® E 22 offers versatility in various applications, providing flexibility and bonding properties suitable for a range of materials.