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Excellent abrasion and wear resistance for demanding dynamic applications.
High tensile strength and elongation at break, ensuring robust mechanical performance.
Good low-temperature flexibility down to –30 °C without significant loss of elasticity.
Outstanding oil, grease, and hydrocarbon resistance compared to conventional thermoplastics.
Easy processing via extrusion, injection molding, and blow molding with minimal thermal degradation.
Automotive interior trim components including instrument panel overlays and door panels.
Industrial hoses and pneumatic tubing requiring high flex life and pressure resistance.
Protective casings and gaskets for electronic enclosures and medical devices.
Footwear midsoles and outsoles where rebound resilience and comfort are critical.
Conveyor belts and rollers in food-handling and packaging equipment.
| Chemical Type | Aliphatic polyester-based thermoplastic polyurethane (TPU) |
| Product Form | Pellets |
| Appearance | Off-white to light amber translucent granules |
| Primary Applications | Extruded profiles, molded parts, flexible tubing, soft-touch surfaces |
| Key Features | Abrasion resistance, oil resistance, low-temperature flexibility, melt-processability |
| Benefits | Reduced part weight vs. rubber, recyclability, shorter cycle times vs. thermosets |
| Density (g/cm³) | 1.18–1.22 |
| Melt Flow Index (220 °C / 10 kg) | 8–12 g/10 min |
Q1: What is the primary application domain for Merquinsa 45-90/12?
A: Merquinsa 45-90/12 is a thermoplastic polyurethane elastomer specifically engineered for demanding extrusion and injection molding applications, including flexible tubing, technical profiles, and soft-touch overmolding—particularly where resilience, abrasion resistance, and consistent melt processability are required.
Q2: How does Merquinsa 45-90/12 differ from standard aromatic TPU grades?
A: Unlike conventional aromatic TPUs, Merquinsa 45-90/12 features a tailored hard-segment architecture that enhances thermal stability during processing while maintaining excellent low-temperature flexibility and reduced yellowing tendency—making it suitable for applications requiring extended thermal exposure without significant degradation.
Q3: Is drying required before processing, and what are the recommended conditions?
A: Yes—like most hygroscopic TPUs, Merquinsa 45-90/12 must be thoroughly dried prior to processing. Typical drying involves 3–4 hours at 80–90 °C with dew point ≤ −30 °C in a desiccant dryer; insufficient drying may lead to surface defects and reduced mechanical performance.
Q4: Can Merquinsa 45-90/12 be blended with other polymers?
A: It demonstrates good compatibility with certain engineering thermoplastics such as polyesters and selected polyolefins when used with appropriate compatibilizers; however, blend formulations should be validated through rheological and mechanical testing to ensure phase stability and performance retention.
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E-mail: wangxingqiang@ericwchem.com
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