MDI Supplier in Malaysia for Polyurethane Systems
- Also known as
- Methylene Diphenyl Diisocyanate
MDI supplier in Malaysia for polyurethane elastomer, coating, adhesive and manufacturing systems. MDI refers to methylene diphenyl diisocyanate based materials, and this page covers monomeric, liquid modified and prepolymer grades rather than polymeric MDI.
Monomeric MDI suits formulations that control isomer profile and purity, while liquid modified grades provide different handling or processing behaviour. Prepolymers combine MDI with a specified polyol backbone and are selected by NCO content, viscosity and the finished polyurethane application.
Applications include cast and thermoplastic polyurethane elastomers, footwear systems, moulded components, coatings, construction adhesives and sealants. Polymeric MDI is a separate product used prominently in rigid foam and wood-panel binding and should be requested on its own page.
Send the required MDI grade, NCO and viscosity specification, quantity and delivery location for a quotation. Availability, packing, documentation and delivery timing are confirmed for the quoted MDI requirement.
- Grade
- monomeric, liquid modified, prepolymer
- Appearance
- pale solid or amber liquid, depending on grade and modification
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 |
|---|---|---|---|---|
| Monomeric MDI | pale solid, flakes or molten material depending on handling temperature | — | Thermoplastic polyurethane, cast elastomers and specialised polyurethane systems where isomer profile, purity and controlled impurities are defined by the formulation. | Supply form and pack format are confirmed with the quotation. |
| Liquid modified MDI | amber liquid modified isocyanate | — | Moulded elastomers, footwear systems, adhesives and selected foam formulations that require liquid handling and a modified reactivity or processing profile. | Liquid pack format is confirmed for the quoted grade and quantity. |
| MDI prepolymer | amber to brown viscous liquid | — | Cast polyurethane elastomers, coatings, adhesives and sealants where the prepolymer's NCO content, viscosity and polyol backbone are specified by the formulator. | Packing and commercial details are confirmed against the prepolymer specification. |
How to buy MDI from ChemTrade
Request a quote for 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 |
|---|---|---|
| Product family | methylene diphenyl diisocyanate based isocyanate | — |
| Commercial grade scope | monomeric MDI, liquid modified MDI or MDI prepolymer | — |
| Appearance | pale solid to amber or brown liquid, depending on grade | — |
| Grade-defining requirements | NCO content, viscosity, isomer profile, free monomer and moisture as specified | — |
| Moisture sensitivity | protect from moisture and contamination during storage and handling | — |
MDI applications
Safety and handling
Keep MDI sealed, dry and protected from moisture, contamination and unsuitable temperatures. Handle reactive isocyanates using the safety information supplied for the quoted grade. Supply is subject to applicable requirements.
Common questions about MDI
Does this MDI page include polymeric MDI?
No. This page covers monomeric, liquid modified and prepolymer MDI grades. Polymeric MDI, also called PMDI, has its own catalogue page because its composition, appearance and principal applications differ.
What is the difference between monomeric and modified MDI?
Monomeric MDI is selected against an isomer and purity specification and may be solid at typical handling conditions. Modified MDI is engineered for liquid handling or adjusted processing behaviour in a defined polyurethane system.
When should I request an MDI prepolymer?
Request a prepolymer when the formulation requires a partially reacted MDI-polyol material with defined NCO content, viscosity and backbone. Include the cast elastomer, coating, adhesive or sealant application with the enquiry.
Is MDI the same as TDI?
No. MDI and TDI are different aromatic diisocyanate families with different structures, grades and processing behaviour. Use the exact isocyanate named by the formulation rather than substituting by application alone.
What specifications matter when buying MDI?
State monomeric, modified or prepolymer grade, NCO content, viscosity, isomer profile or free-monomer limits where relevant, and moisture requirements. Include the polyol system and finished application.
How are MDI packing and documents confirmed?
State the physical form, preferred pack format and any product documents required. Available packing, documentation and commercial details are confirmed for the quoted grade.
What information is needed for an MDI price enquiry in Malaysia?
Send the grade, NCO and viscosity specification, polyurethane application, quantity and delivery location. Mention required documents and timing so the quotation can address the complete requirement.