Product Name: Quasi-MDI Terminated Polyester-Based Polyurethane Prepolymer
Chemical Type: Isocyanate-Terminated PU Prepolymer
Main Raw Materials: Polyester Polyol, Quasi MDI (Modified Methylene Diphenyl Diisocyanate)
NCO Content: Customizable (typically 5%–12%)
Viscosity: Medium to high, adjustable per customer requirement
Appearance: Clear to slightly yellow, viscous liquid
Packaging: 200kg drum / 20MT ISO tank / IBC
Origin: China
⭐ Product Overview
This quasi-MDI terminated polyester polyurethane prepolymer is a high-performance, solvent-free, moisture-curable material specifically engineered for CASE applications - Coatings, Adhesives, Sealants, and Elastomers. Based on high molecular weight saturated polyester polyols and modified MDI (methylene diphenyl diisocyanate), the product provides excellent mechanical strength, chemical resistance, and thermal stability.
The quasi-MDI structure helps reduce free monomer content while maintaining good reactivity and pot life balance, making it safer and easier to handle than pure MDI systems.
✅ Key Features & Advantages
Quasi-MDI Termination – Low free monomer content, safer for handling and transport
Superior Mechanical Performance – High tensile strength, tear resistance, and elongation
Excellent Chemical Resistance – Ideal for oil-resistant, hydrolysis-resistant formulations
Enhanced Adhesion – Strong bonding to metal, rubber, leather, plastics, and composites
Flexible Processing – Suitable for one-component or two-component PU systems
Customizable Formulation – Adjustable viscosity, NCO content, and cure profile
🔧 Technical Specifications (Typical Grade)
Property Typical Value
NCO Content 6.5% ± 0.3%
Viscosity (25°C) 10,000–30,000 mPa·s
Appearance Light yellow to clear liquid
Free MDI Content ≤ 0.2%
Hydroxyl Value of Base Polyol 50–150 mg KOH/g
Shelf Life 6–12 months in sealed packaging
Note: Properties can be adjusted to meet specific customer requirements.
🧪 Main Applications
Reactive Hot Melt Adhesives – For automotive interiors, footwear, furniture lamination
Sealants – For construction joints, transportation, industrial gaps
High-Strength Coatings – Used on metals, concrete, plastics, and wood
Elastomers – Molds, rollers, wheels, gaskets, and anti-vibration parts
PU Leather Finishes – Durable topcoats and back coatings
🔍 Integrated Keywords
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CASE polyurethane prepolymer manufacturer
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PU prepolymer for sealants and elastomers
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🌍 Why Choose Our Quasi-MDI Polyester PU Prepolymer?
🧪 Expert Formulation – Custom grades tailored for your application and machinery
🏭 Factory Direct Supply – Competitive pricing with strict QC control
📦 Flexible Packaging & Fast Shipping – Worldwide logistics with COA, MSDS, and TDS
💼 Application Support – Experienced engineers to assist in your formulation and production
🌱 Environmentally Friendly Options – Low VOC and low free monomer content available
📞 Request Your Free Sample or Quotation Today!
We supply premium polyurethane raw materials for clients in automotive, construction, electronics, footwear, and industrial manufacturing industries.
📧 Email: greilyn@beiqiao.net
📞 Phone / WhatsApp: +86-18853364460
👉 Boost the performance of your adhesives, sealants, and coatings with our reliable quasi-MDI polyurethane prepolymers. Contact us now!
FAQ
What is your company specialized in?
We mainly do polyurethane raw material,especially the rigid foam to spray foam insulation,sandwich panel,refrigerators etc
What is the MOQ of your product?
Usually 1 drum also can be accepted,however,we can supply any quantity you needed for the first time, for samples or trial orders, so just tell us your request quality is ok.
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