MDI (Diphenylmethane Diisocyanate) — Polyurethane Isocyanate
MDI is the isocyanate component used in high-performance polyurethane elastomers, thermoplastic polyurethane, adhesives and coatings. Allzone supplies MDI grades to Canadian manufacturers with the grade confirmed against supplier documentation and full safety documentation provided.
At a glance
- Product
- MDI (Diphenylmethane Diisocyanate)
- Grades
- Polyurethane Isocyanate
- Typical applications
- Cast polyurethane elastomers and rollers · Thermoplastic polyurethane production · Structural adhesives, binders and sealants
- Packaging
- Packaging confirmed at quotation
Handling notice. This product requires review of the supplier technical data sheet and safety data sheet before purchase and use. Request both documents for the exact grade under consideration.
- • Certificate of Analysis is provided against the confirmed shipment, grade and batch.
- • Manufacturer TDS and SDS are subject to grade and supplier confirmation and are available on request.
- • Grades, packaging and origin above are indicative sourcing options and are confirmed at quotation.
Available grades from container-direct sourcing
Polyurethane Isocyanate
Grade and specification confirmed against supplier technical data sheet at quotation.
Typical applications
- Cast polyurethane elastomers and rollers
- Thermoplastic polyurethane production
- Structural adhesives, binders and sealants
- Coatings and specialty polyurethane systems
Why Canadian buyers choose us
- Container-direct sourcing coordinated through our Ontario logistics partner
- Supplier documentation (TDS, SDS, COA) requested and shared before order confirmation
- Specifications confirmed in writing at quotation stage — no assumed values
- LTL and FTL freight across Ontario, Quebec and Western Canada
- Quantities reviewed per enquiry, from smaller lots to full container loads
Typical industries served
Technical & procurement detail
Functional role of mdi (diphenylmethane diisocyanate)+
The isocyanate is the reactive half of every polyurethane system: it reacts with polyol hydroxyl groups to build the urethane linkage and with water to generate the carbon dioxide that blows a foam. Pure MDI's low vapour pressure and controlled reactivity make it the choice for elastomers and TPU where property consistency matters.
Selecting the right grade+
Isomer ratio, NCO content, functionality and whether the product is pure, modified or a prepolymer determine reactivity and end properties. System type, processing window and equipment determine what is quoted, and handling requirements are reviewed as part of the enquiry.
Documentation and specification+
Properties differ between producers and between grades of the same material. Allzone confirms the applicable grade with the supplier before quoting and shares the technical data sheet and safety data sheet for the exact material offered, so the values you evaluate are the values you receive.
Frequently asked questions
Do you provide safety documentation for isocyanates?+
Yes. The supplier safety data sheet for the exact grade is provided before order confirmation, and transport and handling requirements are confirmed with the material.
Which grade will I be quoted?+
The grade is set by your specification. Share the target performance, process conditions and any customer or regulatory requirement in the RFQ and the matching grade is confirmed with the supplier before quotation.
What packaging is available?+
Packaging is confirmed with the supplier at quotation for the grade and quantity discussed.
Can you deliver across Ontario and Quebec?+
Yes. LTL and FTL freight is arranged across Ontario, Quebec and Western Canada, with container-direct supply for repeat volumes.
Technical knowledge for MDI Diphenylmethane Diisocyanate Supplier — Canada
Engineering and purchasing guidance written for this material — understand it, apply it, compare options, specify a grade, and fix production problems.
Foundation Articles
Application Guides
Comparison Articles
Troubleshooting Guides
Related products
Materials commonly quoted alongside MDI (Diphenylmethane Diisocyanate) by the same plants.
Rheology Modifier
Sag and levelling control in architectural and industrial paints
Need a quote on MDI (Diphenylmethane Diisocyanate)?
Request pricing, TDS/SDS and available documentation. We usually acknowledge enquiries within one business day; samples are subject to supplier availability and product classification.