Product Name: Quasi-MDI Terminated PTMG Prepolymer
Chemical Type: Prepolymer based on Polytetramethylene Ether Glycol (PTMG) and Quasi-Prepolymerized Methylene Diphenyl Diisocyanate (MDI)
Form: Liquid, moisture-sensitive
Packaging: 200kg drums / IBC totes
Shelf Life: 6 months under sealed, dry conditions
Origin: China
⭐ Product Overview
Our Quasi-MDI terminated PTMG prepolymer is a premium-grade raw material designed for high-performance cast polyurethane elastomers. Formulated using Polytetramethylene Ether Glycol (PTMG) and a low-free monomer MDI (quasi-prepolymer), it delivers exceptional mechanical strength, outstanding hydrolysis resistance, and excellent dynamic performance. It is widely used in demanding applications such as industrial rollers, wheels, mining screens, and automotive components.
This system offers excellent processability and long pot life, enabling flexible mold designs and consistent demolding quality, making it ideal for both hand-casting and machine casting processes.
✅ Key Features and Advantages
Outstanding Mechanical Properties: High tensile strength, abrasion resistance, and load-bearing capacity
Low Free Monomer MDI Content: Safer handling with reduced toxicity compared to TDI systems
Excellent Hydrolysis Resistance: Ideal for humid or water-exposed environments
Superior Dynamic Performance: Low hysteresis and excellent fatigue resistance under cyclic stress
Long Pot Life & Short Demolding Time: Increases casting efficiency and mold turnover
Wide Processing Window: Suitable for manual and automated casting applications
🔧 Technical Specifications
Property Typical Value
Free MDI Monomer Content ≤ 6%
NCO Content 6.0% – 8.0%
Viscosity (25°C) 1500–2500 mPa·s
Processing Temperature 80–100°C
Hardness Range (with MOCA) 70–95 Shore A
Base Polyol PTMG 1000 / PTMG 2000
Appearance Pale yellow transparent liquid
🏭 Main Applications
Cast Polyurethane Elastomers
Industrial rollers, steel industry wheels
Printing and textile machine parts
PU linings and screen panels for mining
Shock-absorbing pads, gears, and seals
Automotive Components
Bump stops, bushings, suspension blocks
Oil & Gas Sector
Scraper blades, pipeline seals, couplings
Footwear & Sport Equipment
High-rebound soles, inline skate wheels, gym equipment
🔍 Keywords Integrated
Quasi-MDI based prepolymer supplier
PTMG polyurethane elastomer prepolymer
Castable PU elastomer raw materials
Quasi MDI terminated polyurethane system
Low free MDI cast elastomer prepolymer
PTMG-based polyurethane for rollers
High performance PU elastomer prepolymer
Cast polyurethane elastomer formulation
Polyurethane elastomer for mining equipment
Prepolymer for industrial PU casting
🌍 Why Choose Us?
🏭 Direct Manufacturer – Competitive pricing, steady supply, technical expertise
🔍 Customization Available – We offer tailored NCO content and molecular weight
📦 Efficient Logistics – Fast global shipping in drums or IBCs
🧪 Technical Support – Formulation guidance and on-site application advice available
🧾 Full Documentation – COA, MSDS, TDS, and REACH certification provided
📩 Contact Us for Pricing, Samples, or Technical Support
Whether you are a PU caster, elastomer system integrator, or end-product manufacturer, we have the technical capability and production scale to meet your needs. Contact us now to get a free sample or customized quote!
📧 Email: greilyn@beiqiao.net
📞 Phone / WhatsApp: +86-18853364460
Boost your polyurethane elastomer performance with our high-quality MDI-PTMG prepolymer systems – Engineered for durability, flexibility, and reliability.
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