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Excellent abrasion resistance for demanding mechanical service environments.
Broad processing window suitable for extrusion, injection molding, and calendering.
Good low-temperature flexibility down to –30 °C.
Hydrolysis-resistant aliphatic polyester-based thermoplastic polyurethane.
Consistent melt flow behavior with low gel content and high batch-to-batch reproducibility.
High-performance automotive interior trim and seals.
Industrial hoses and fluid-conveying tubing requiring oil and ozone resistance.
Flexible technical profiles for architectural glazing systems.
Wear-resistant components in material handling equipment.
Medical-grade non-PVC tubing and device housings (subject to regulatory validation).
| Chemical Type | Aliphatic polyester-based thermoplastic polyurethane (TPU) |
| Product Form | Pellets |
| Appearance | Off-white to light beige granules, free-flowing |
| Shore A Hardness (ASTM D2240) | 45–60 |
| Melt Flow Index (2.16 kg, 190 °C, ASTM D1238) | 3 g/10 min |
| Density (ASTM D792) | 1.18–1.22 g/cm³ |
| Key Features | Hydrolysis resistance, UV stability, good elasticity |
| Primary Applications | Extruded profiles, molded parts, flexible tubing, technical seals |
Q1: What is the primary functional role of Merquinsa 45-60/3 in thermoplastic polyurethane formulations?
A: Merquinsa 45-60/3 is a specialized chain extender designed to enhance mechanical performance and melt processability in aromatic TPU systems. It contributes to improved tensile strength, elongation retention, and thermal stability during extrusion or injection molding.
Q2: Is Merquinsa 45-60/3 compatible with both MDI- and TDI-based TPUs?
A: Yes — it demonstrates broad compatibility with common aromatic diisocyanate-based TPU systems, including those built on MDI and TDI prepolymers. Performance optimization may vary depending on prepolymer functionality and molecular weight.
Q3: How should Merquinsa 45-60/3 be handled and stored to maintain its reactivity?
A: Store in original sealed containers under dry, cool conditions (below 25 °C) and protect from moisture and ambient humidity. Pre-drying is recommended prior to use if exposure to air has occurred, as it is hygroscopic and moisture can reduce chain extension efficiency.
Q4: Can Merquinsa 45-60/3 be used in applications requiring FDA compliance for indirect food contact?
A: While not inherently certified, Merquinsa 45-60/3 is commonly incorporated into TPU compounds that are formulated to meet FDA requirements for indirect food contact — subject to full system validation, appropriate testing, and final regulatory review by the compounder or end-user.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
