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Home / Products / Toluene Diisocyanate (TDI) / Covestro TDI 80/20 Premium polyurethane raw material

Covestro TDI 80/20 Premium polyurethane raw material

Covestro TDI 80/20 premium polyurethane raw material is a high performance aromatic isocyanate supplied by Covestro Polymers (China) Co., Ltd. It features superior purity, stable chemical properties and reliable reaction control for challenging polyurethane applications. With consistent performance and wide international recognition, this product is suitable for manufacturers requiring high-quality TDI solutions.

Product benefits
Premium quality raw materials ensure stable characteristics of polyurethane.
Excellent formulation compatibility for demanding applications.
Strict batch-to-batch consistency maintains product quality control.
Meets the requirements of international polyurethane manufacturers in terms of reliability of supply and productivity.

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Premium flexible polyurethane foam.
High quality foam systems for mattresses and furniture
Materials for automotive comfort
Specialty polyurethane products and coatings

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Our products are designed with high precision, high stability, and high cost-effectiveness as core features to meet the diverse needs of different customers.
Enterprise Advantages
· Polyurethane core raw materials
· Official cooperative agent
· TDI
· Polymer MDI
· Polyether polyols
· Annual sales of 50,000 tons+
· 30+ countries around the world
· Sea and land dual channels
· Complete MSDS/TDS/COA
· Worry-free customs clearance
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 TDI 80/20 Premium polyurethane raw material 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 TDI 80/20 Premium polyurethane raw material Industry knowledge

Covestro TDI 80/20 Premium Polyurethane Raw Material is a toluene diisocyanate product supplied at the standard 80/20 isomer ratio (2,4-TDI to 2,6-TDI), positioned as a premium raw material for flexible foam production. As a core polyurethane raw material , its quality directly determines the consistency of the foam produced, since even small changes in isomer ratio, free monomer content, or color can affect reaction rate and the properties of the finished foam. Buyers looking for premium products typically prioritize tight specification control and reliable batch-to-batch consistency over the lowest unit price.

Key Advantages of Premium TDI 80/20

  • Tight control of NCO content , typically held at 48.2–48.6%, reduces the need for frequent formulation adjustments.
  • Low color values (APHA) and consistent clarity help maintain a uniform foam appearance across production batches.
  • A stable 80/20 isomer ratio delivers predictable rise times and cell structure on slabstock and molded foam lines.
  • Lower risk of off-spec deliveries, reducing production downtime and material rejection costs for foam producers.

How This Polyurethane Raw Material Behaves in Foam Production

Reaction Behavior

In foam production, the -NCO groups in TDI react with the hydroxyl groups of the polyol to form a urethane network, while a parallel water-isocyanate reaction generates CO₂ to raise the foam. Because the 80/20 ratio is dominated by the faster-reacting 2,4-isomer, this grade delivers a relatively fast, well-established reaction profile that most flexible foam formulators are already calibrated to work with.

Why Consistency Matters

A premium raw material reduces the variability that formulators would otherwise have to compensate for by adjusting the catalyst. For example, a shift in isomer ratio of just 1–2 percentage points between batches can noticeably change gel time, so holding tight specification tolerances is one of the main practical benefits of buying premium-grade TDI.

Typical Specification Reference

Parameter Typical Value
NCO Content 48.2–48.6%
Isomer Ratio (2,4-/2,6-TDI) 80/20
Color (APHA) ≤20
Hydrolyzable Chlorine ≤0.03%
General industry reference ranges for premium 80/20 TDI; always confirm exact values against the batch COA.

Applications in the Polyurethane Value Chain

  1. Flexible slabstock foam for mattresses and soft upholstery.
  2. Molded flexible foam for automotive seats and interior components.
  3. Furniture upholstery requiring consistent firmness and rebound characteristics.
  4. Specialty coatings and elastomer systems that use TDI as the main isocyanate raw material.

Sourcing Covestro TDI 80/20 Through DOMI (HK) INDUSTRIAL

DOMI (HK) INDUSTRIAL CO., LIMITED is an officially authorized distributor of Covestro, among other world-class polyurethane manufacturers. Founded in 2022 and headquartered in Hong Kong, the company has built annual sales exceeding 50,000 metric tons and serves customers in more than 30 countries , providing stable, high-quality, and cost-effective supply solutions for TDI and other core polyurethane raw materials. Every shipment comes with comprehensive documentation, including MSDS, TDS, and COA, along with flexible sea and land transport options to streamline procurement.

Frequently Asked Questions

Q1: What makes a TDI 80/20 grade "premium" compared with a standard grade?
Premium grades typically have tighter tolerances on NCO content, color, and isomer ratio, which results in more consistent foam performance from batch to batch.

Q2: Is this raw material suitable for rigid foam production?
No. TDI 80/20 is designed for flexible foam; rigid foams typically use polymeric MDI systems instead.

Q3: How should this polyurethane raw material be stored?
It should be stored in sealed, moisture-proof containers in a cool, well-ventilated area, since TDI reacts readily with atmospheric moisture.

Q4: What documents should accompany a shipment of this material?
A complete shipping package should include the MSDS, TDS, and a batch-specific COA confirming that the material meets the agreed specifications.

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