Polymeric MDI Supplier in Malaysia
- Also known as
- PMDI
- Crude MDI
- Polymeric Isocyanate
Polymeric MDI supplier for polyurethane raw-material buyers in Malaysia. Polymeric MDI, also called PMDI or crude MDI, is a dark-brown liquid polymeric isocyanate based on diphenylmethane-4,4'-diisocyanate with isomers and higher-functionality homologues, reacted with polyols to make polyurethane.
Commercial grades differ by NCO content, average functionality, viscosity and free-monomer level. Standard polymeric grades serve rigid foam and binder systems, low-viscosity grades support spray and continuous lines, and modified or prepolymer grades suit adhesives, sealants and elastomers. Pure monomeric 4,4'-MDI is a separate product and is not covered on this page.
Typical uses include rigid insulation panels, cold-room and spray foam, flexible or moulded foam, wood-panel binders for particleboard, OSB and MDF, polyurethane adhesives and coatings, and selected foundry or mining binders. Isocyanates are moisture-sensitive, so packing integrity matters to buyers.
Send the required polymeric MDI grade, specification targets, quantity and delivery location with your enquiry. Availability, packing, documentation and delivery timing are confirmed with the quotation.
- Appearance
- dark-brown liquid polymeric isocyanate
Polymeric MDI grades and forms
We supply several forms to suit different formulating and dosing setups. If you need a size that is not listed, ask us.
| Grade | Form | Assay | Typical use | Packing |
|---|---|---|---|---|
| Standard polymeric MDI | dark-brown liquid | — | Rigid polyurethane foam, spray systems, wood-panel binders and general polyol-system formulations where standard NCO content, functionality and viscosity are specified. | Confirm the required pack format with the quotation. |
| Low-viscosity polymeric MDI | dark-brown liquid, lower viscosity grade | — | Spray polyurethane foam, continuous panel lines and other processes where easier pumping, mixing or flow of the isocyanate component is required. | Confirm the required pack format with the quotation. |
| Low-monomer polymeric MDI | dark-brown liquid, reduced free monomer | — | Formulations and workplace environments where buyers specify a lower free monomeric MDI content alongside the polymeric isocyanate profile. | Confirm the required pack format with the quotation. |
| Modified or prepolymer polymeric MDI | liquid modified or prepolymer grade | — | Adhesives, sealants, elastomers and specialised polyurethane systems that need a modified reactivity or handling profile rather than a standard polymeric grade. | Confirm the required pack format with the quotation. |
How to buy polymeric MDI from ChemTrade
Request a quote for polymeric MDI
Use the form below to request a quotation. You can also email sales@chemtrademalaysia.com or send us a message on WhatsApp.
Specifications
| Parameter | Value | Method |
|---|---|---|
| Appearance | dark-brown liquid polymeric isocyanate | — |
| Chemical type | polymeric isocyanate based on diphenylmethane-4,4'-diisocyanate with isomers and higher-functionality homologues | — |
| Grade controls | NCO content, average functionality, viscosity and free-monomer level confirmed against the required polymeric MDI grade | — |
| Moisture sensitivity | protect from moisture; packing integrity is critical for isocyanate quality | — |
Polymeric MDI applications
Safety and handling
Keep containers tightly closed, dry and protected from moisture and contamination. Handle polymeric MDI under the safety information supplied with the quoted grade. Supply is subject to applicable requirements.
Common questions about polymeric MDI
What is polymeric MDI used for?
Polymeric MDI is a polyurethane raw material reacted with polyols to make rigid insulation foam, spray foam, flexible or moulded foam, wood-panel binders, adhesives, sealants, elastomers and coatings. State the application so the grade profile can be matched more closely.
Is polymeric MDI the same as pure or monomeric 4,4'-MDI?
No. Polymeric MDI is a mixture of diphenylmethane diisocyanate isomers and higher-functionality homologues, typically supplied as a dark-brown liquid. Pure monomeric 4,4'-MDI is a different product identity and should be requested separately if that is the grade required.
Which polymeric MDI grade should I request?
Standard grades are selected by NCO content, average functionality and viscosity for foam, binder or adhesive systems. Low-viscosity grades suit spray and continuous lines, low-monomer grades reduce free monomeric MDI, and modified or prepolymer grades serve specialised polyurethane systems.
What is PMDI or crude MDI?
PMDI and crude MDI are common trade names for polymeric MDI, the liquid polymeric isocyanate used with polyols in polyurethane manufacture. They are not separate chemicals from polymeric MDI, though commercial grades still differ by NCO content, functionality and viscosity.
What specifications should a buyer provide for polymeric MDI?
State the intended foam, binder or adhesive system and any targets for NCO content, average functionality, viscosity or free-monomer level. If a formulation is already in production, include the current specification so the quoted grade can be aligned more closely.
Can packing and documentation be confirmed with the quotation?
Yes. List the preferred pack format, such as drums, IBCs or bulk, and any required product documents in the enquiry. Moisture-protected packing, available documentation and commercial details are confirmed for the quoted polymeric MDI grade.