Methylene Diphenyl Diisocyanate (MDI) is a key aromatic diisocyanate and the primary building block for polyurethane (PU) materials. It exists in several forms: pure MDI (a solid) and polymeric MDI (a liquid mixture). It is highly reactive with compounds containing active hydrogen, like polyols. MDI-based PUs are known for their versatility, durability, and excellent mechanical and insulating properties.
4,4'-MDI, Diphenylmethane diisocyanate
C₁₅H₁₀N₂O₂
101-68-8
250KG Drum, 1000KG IBC Tote
ISO9001
Global Reach:Our Methylene Diphenyl Diisocyanate (MDI) has been successfully exported and applied in key markets across the globe, including but not limited to the United States, Germany, India, Vietnam, and Brazil. Our product has consistent quality and ability to meet diverse international standards.
Equivalent Alternatives:Our product has served as a reliable alternative to Wanhua Chemical, BASF, Covestro, Huntsman, Dow for several local manufacturers, helping them reduce costs with comparable (or even superior) results in performance.
A vital solvent and carrier in the manufacture of PU resins and synthetic leathers (PU slurry).
Used as a rigid chain extender in polyurethane elastomers and foams, significantly improving heat resistance, mechanical strength, and dimensional stability.
TEDA is predominantly used as a gelling catalyst in the production of various polyurethane foams, including flexible, semi-rigid, and rigid foams . It excellently balances the foaming and curing reactions, which is critical for forming fine, uniform foam structures with optimal physical properties .
Acts as a blowing agent in the production of flexible polyurethane foams.
Unmatched Versatility for Diverse Applications: Our MDI portfolio (Pure and Polymeric) enables the production of a vast range of high-performance materials, from rigid insulation foams to flexible cushioning and durable elastomers.
Consistent Quality for Predictable Processing: We guarantee strict control over isomer content and NCO functionality, ensuring consistent reactivity and predictable foam rise/cure kinetics in your manufacturing processes.
Reliable Global Supply of a Critical Raw Material: Our robust and integrated supply chain ensures the secure and timely delivery of this essential chemical, supporting the continuous production of the polyurethane industry.
Technical Leadership in Polyurethane Chemistry: Leverage our deep expertise to optimize your formulations and processing parameters, helping you achieve desired product properties like density, hardness, and thermal performance.
Commitment to Quality and Innovation
We are committed to providing high-quality Methylene Diphenyl Diisocyanate (MDI) that meets stringent international standards. Our focus on innovation and sustainability ensures that our products not only enhance your applications but also align with evolving environmental regulations and industry trends.