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Home / Products / Methylene Diphenyl Diisocyanate (MDI) / Covestro 44V20 L Polymer container MDI IBC

Covestro 44V20 L Polymer container MDI IBC

Covestro 44V20 L Polymeric MDI IBC Container Grade is a premium PMDI raw material designed for large scale polyurethane production. Supplied in IBC containers, it provides efficient storage, transport and continuous supply for industrial users. With stable viscosity, excellent formulation compatibility and reliable process properties, this product is suitable for rigid foam systems, composite materials and advanced insulation materials.

Product benefits
IBC container packaging supports bulk purchasing and continuous production.
Improving logistics efficiency for large industrial users.
Consistent performance of automated polyurethane production processes.
Excellent control of cellular structure improves the properties of the final product.

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Applications

Large-scale production of rigid polyurethane foam
Energy efficient building insulation systems
Application of pipe insulation
Production of composite insulating materials
Insulation of appliances and refrigeration equipment

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· Polyurethane core raw materials
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DOMI (HK) INDUSTRIAL CO., LIMITED
DOMI (HK) INDUSTRIAL CO., LIMITED DOMI (HK) INDUSTRIAL CO., LIMITED
DOMI (HK) INDUSTRIAL CO., LIMITED
About Us
Building Stronger Industries
Through Advanced Materials
Established in 2022 and headquartered in Shanghai, DOMI (HK) INDUSTRIAL CO., LIMITED is a trusted supplier and officially authorized distributor of globally recognized polyurethane manufacturers, including Covestro, Wanhua Chemical, Cangzhou Dahua, and Gansu Yinguang. Leveraging strong partnerships with leading producers, we ensure a stable and reliable supply of premium polyurethane raw materials to customers worldwide. As a China-based Covestro 44V20 L Polymer container MDI IBC factory and wholesale supplier of polyurethane raw materials, DOMI (HK) INDUSTRIAL CO., LIMITED provides reliable sourcing and customized solutions to meet the needs of customers worldwide.

With annual sales exceeding 20,000 metric tons and a global customer network spanning more than 30 countries and regions, we have built a solid reputation for quality, reliability, and professional service. Our core product portfolio includes TDI (Toluene Diisocyanate), Polymeric MDI, Polyether Polyol, and Polymer Polyol (POP), widely used in furniture, mattresses, automotive components, insulation materials, coatings, adhesives, and other polyurethane applications.

Driven by a commitment to customer satisfaction, competitive pricing, and efficient logistics solutions, Dongmei (HK) Industrial provides stable, high-quality, and cost-effective supply services. Backed by comprehensive documentation support, including MSDS, TDS, and COA, as well as flexible sea and land transportation options, we help customers streamline procurement processes and achieve long-term business success.
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Covestro 44V20 L Polymer container MDI IBC Industry knowledge

Covestro 44V20 L Polymeric MDI IBC Container Grade :

Covestro 44V20 L Polymeric MDI is a liquid polymeric methylene diphenyl diisocyanate widely used in rigid polyurethane products. Supplied in an IBC container grade packaging format, it is intended for customers who need larger volumes than standard drum packaging can accommodate. Polymeric MDI of this type typically has an NCO content in the range of 30.5–31.5% and a viscosity of around 180–240 mPa·s at 25°C, giving processors a workable balance between reactivity and flowability for spraying, pouring, and lamination processes.

Key Advantages of the 44V20 L Grade

  • Higher average functionality (around 2.7) than pure MDI, delivering strong crosslinking for rigid foams and adhesive systems.
  • Stable liquid form at ambient temperature, which simplifies metering and dosing on continuous production lines.
  • Good compatibility with the polyether polyols, flame retardants, and blowing agents used in insulation foam formulations.
  • Consistent NCO content from batch to batch, which reduces the need for frequent formulation adjustments.

How Covestro 44V20 L Polymeric MDI Works

Crosslinking Reaction

As a polymeric MDI, this grade contains a mixture of diphenylmethane diisocyanate isomers and higher-functionality oligomers. When the -NCO groups react with the -OH groups of the polyol, the multifunctional structure creates a densely crosslinked polyurethane network , which gives rigid foam its dimensional stability and compressive strength compared with flexible foam made from TDI.

Role in Foam Rise and Cure

In rigid foam systems, the reaction with water generates CO₂ for the initial rise, while physical blowing agents (such as pentane) contribute additional expansion in insulation-grade foams. The relatively high functionality of polymeric MDI helps the foam gel quickly, reducing cell collapse and supporting a closed-cell content above 90% in well-formulated rigid systems.

Typical Applications

Application Foam/Product Type Key Benefit
Building Insulation Rigid PIR/PUR foam Low thermal conductivity
Cold Chain Panels Sandwich/continuous panels High closed-cell content
Spray Foam Insulation Rigid PU spray foam Fast gel and cure time
Wood Panels Binder/adhesive Strong crosslinked bond
General reference applications for polymeric MDI grades; actual formulation depends on end-use requirements.

Why the IBC Container Grade Matters for Bulk Buyers

Choosing an IBC container grade over standard drums is primarily a logistics and cost decision. IBC totes typically hold about 1,000 liters per unit, which reduces the number of individual containers needed for a given order volume, lowering packaging cost per unit and simplifying warehouse operations with forklifts or pallet jacks. For processors consuming several tons of polymeric MDI per month, IBC packaging can significantly cut the labor involved in disposing of and handling empty containers compared with 200 L drums.

Sourcing Covestro 44V20 L Through DOMI (HK) INDUSTRIAL

DOMI (HK) INDUSTRIAL CO., LIMITED , founded in 2022 and headquartered in Hong Kong, is an officially authorized distributor of Covestro polymeric MDI, among other world-recognized polyurethane manufacturers. With annual sales exceeding 50,000 metric tons and a customer network spanning more than 30 countries and regions , DOMI (HK) INDUSTRIAL supports rigid foam and insulation material producers by offering stable supply, IBC or drum packaging options, and full documentation, including MSDS, TDS, and a COA for every shipment.

Frequently Asked Questions

Q1: What does "44V20 L" mean for this product?
It is a specific polymeric MDI grade designation, where the letter "L" denotes the liquid form supplied for standard processing conditions.

Q2: Can this grade be used to make flexible foam?
No. Its higher functionality and NCO content make it suitable for rigid foam, insulation panels, and adhesives/binders, not for flexible cushioning foam.

Q3: How should polymeric MDI IBC containers be stored?
They should be kept sealed in a dry, temperature-controlled space away from moisture, since polymeric MDI reacts with water vapor over time and exposure can affect NCO content.

Q4: What is the typical shelf life of this product?
When properly stored in its sealed original packaging, polymeric MDI typically maintains stable properties for roughly 6 months from the production date; always check the batch-specific COA for exact guidance.

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