Before working with this product, you must read and become familiar with the available information on its risks, proper use, and handling. Information is available in several forms, e.g., in particular in the currently valid safety data sheets and product labels. For further information contact your Covestro representative.
Product description
Desmodur E 29 is a polyisocyanate prepolymer based on diphenylmethane diisocyanate.It is suitable for use as a binder in the formulation of solvent-free and high-solids coatings for structural and corrosion protection.
Applications
Solvent-free moisture-curing one-component primers based on Desmodur E 29 are suitable for sealing concrete.Desmodur E 29 can also be used to formulate one-component systems for corrosion protection applications.As with any product, use of Desmodur E 29 in a given application must be tested (including but not limited to field testing) in advance by the user to determine suitability.
Form supplied
Form supplied is a solvent-free brown liquid.
Specification
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| NCO content | 24 ± 1 | % | ||
| Viscosity | (25° C | 220 ± 80 | mPa∙s |
Typical Values
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Flash point | approx. 210 | °C | ||
| Density | at 20° C | approx. 1,17 | g/ml | |
| Equivalent weight | approx. 175 |
Compatibility
Desmodur E 29 is compatible with many flexibilizers and liquid extender resins, as well as with many polyether, polyester and polyether ester polyols. Compatibility should be tested in individual cases.
Storage
Desmodur E 29 should be stored in tightly sealed original containers and protected from moisture, heat, and foreign materials. Storage at higher temperatures may result in an increase in viscosity. Storage at lower temperatures may result in the formation of crystalline deposits. However, the crystals can be melted by heating gently. Recommended storage temperature is 10º-30ºC.
Storage time
Desmodur E 29 has a shelf life of six months from date of receipt at customer, provided the material is stored in sealed original containers at the recommended storage temperature.
Health and Safety Information
Disclaimer
Contact
Please use our contact form or contact us directly by sending an e-mail to technical-datasheets@cx.covestro.com .
