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Excellent abrasion resistance for demanding mechanical environments.
Superior elasticity and high rebound resilience (>90% at room temperature).
Good low-temperature flexibility down to –30 °C without significant stiffening.
Outstanding oil, grease, and hydrocarbon resistance compared to conventional thermoplastic elastomers.
Easy processing via injection molding, extrusion, and blow molding with narrow melt viscosity window.
High-performance automotive interior trims and instrument panel skins.
Durable industrial rollers and conveyor belt covers requiring wear resistance.
Flexible hose and tubing for pneumatic and hydraulic systems.
Footwear midsoles and outsoles demanding energy return and grip.
Protective coatings and overmolding for electronic enclosures and tool handles.
| Chemical Type | Aliphatic polyester-based thermoplastic polyurethane |
| Product Form | Pellets (standard 3–4 mm diameter) |
| Appearance | Translucent to semi-opaque granules, free of black specks and agglomerates |
| Shore A Hardness | 75 ± 2 |
| Melt Flow Index (2.16 kg, 200 °C) | 12–16 g/10 min |
| Tensile Strength | 38–42 MPa |
| Elongation at Break | 520–580 % |
| Specific Gravity | 1.18–1.20 |
Q1: What is the primary application niche for T766 in TPU formulations?
A: T766 is specifically engineered as a high-performance processing aid and melt-flow modifier for thermoplastic polyurethane (TPU) compounds, commonly used to enhance extrusion stability, reduce die swell, and improve surface finish in demanding applications such as thin-walled tubing, precision profiles, and flexible films.
Q2: Is T766 compatible with both polyester- and polyether-based TPUs?
A: Yes — T766 demonstrates broad compatibility across major TPU chemistries, including aromatic and aliphatic polyester- and polyether-type systems. It integrates well during compounding without phase separation or significant viscosity inversion under standard processing conditions.
Q3: How does T766 affect thermal stability during repeated extrusion cycles?
A: T766 contributes to improved thermal stability by reducing shear-induced degradation during high-output extrusion. Users typically observe reduced yellowing and better retention of mechanical properties after multiple passes, especially in high-screw-speed operations.
Q4: Can T766 be used in food-contact or medical-grade TPU compounds?
A: T766 is not pre-certified for direct food-contact or medical applications. Its suitability for such uses depends on full formulation evaluation, including regulatory review of all components and final migration testing under intended conditions of use.
Q5: What is the recommended addition range for optimal performance without compromising elasticity?
A: T766 is typically effective at low concentrations, generally ranging from 0.1% to 2% by weight relative to the base TPU resin. Optimal dosage depends on the specific polymer grade, processing method, and target property balance — we recommend starting at 0.5% and adjusting based on rheological and mechanical testing.
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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
