dcsimg Desmodur Amine Cross-linked MDI Prepolymers for Cast PU Elastome

A unique MDI-based technology

Desmodur® amine cross-linked MDI prepolymers for hot cast polyurethane

MDI terminated prepolymers with amine cross-linkers bring together the performance of MDI-based systems with easy processing and good flow-ability.

Amine cross-linked MDI-based systems – Jean-Bernard Lassara – Charlène Maisonneuve – ginko-photo.com

MDI-terminated prepolymers are used to mold high-performance cast polyurethane elastomers with a wide range of properties, but also demand accurate processing.On the other hand, the processing of TDI-based systems is more permissive but requires more careful handling.

To solve these challenges, Desmodur® MAX systems provide an innovative low-melting two-component amine cross-linked MDI-based solution.



Available in both ether and ester series and crosslinked with amines, the resulting polyurethane elastomers possess superior mechanical properties:

  • High elongation
  • High resilience
  • Excellent tear and tear-propagation resistance
  • Exceptional abrasion resistance and hydrolytic stability
  • Low compression set values

In addition, long pot-lives and short demolding times with Desmodur® Max systems make these prepolymers suitable for the molding of very large components.

Covestro offers Desmodur® Max prepolymers with a wide range of cross-linking amines, including commonly used MOCA (2,2' dichloro-4,4'-methylene dianiline) and other alternatives.

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