Products · Isocyanates

Polymeric MDI for rigid foam and insulation

Polymeric MDI (PMDI, polymeric diphenylmethane diisocyanate) is the isocyanate for rigid polyurethane foam — the insulation core of panels, cold rooms, refrigerators and spray foam.

Where it is used

PMDI reacts with rigid polyols or a ready system to form a closed-cell foam that insulates. It is also used in some adhesives and binders. For flexible and moulded foam, other MDI grades are available on request.

What to check on the TDS

  • NCO content and viscosity — they set the mix ratio with the polyol side.
  • Functionality and acidity, which affect reactivity and foam strength.
  • The certificate of analysis of the delivered batch.

Storage and handling

MDI reacts with moisture: keep containers closed and dry and avoid repeated warming and cooling. Store, handle and protect workers as the safety data sheet of the grade says. The SDS comes with every offer.

Request a quotation

Tell us your application (panels, spray, cold rooms), monthly volume, packing, destination port and terms. We reply with an offer, the TDS and the SDS.

Reviewed by the RIFAD technical team · Updated

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