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Excellent balance of thermoplastic processability and elastomeric performance.
High tensile strength and exceptional fatigue resistance for dynamic applications.
Good resistance to oils, greases, and many common industrial fluids.
Outstanding low-temperature flexibility down to –40 °C.
Enhanced melt stability and consistent flow behavior for precision injection molding.
Automotive air ducts and under-hood fluid handling components.
Industrial power transmission belts and timing belt covers.
Consumer appliance parts requiring repeated flexing and impact resilience.
Medical device housings and ergonomic grips requiring biocompatibility-supportive processing.
High-performance sporting goods components such as ski bindings and bicycle suspension parts.
| Chemical Type | Thermoplastic Polyester Elastomer (TPEE) |
| Product Form | Natural pellets |
| Appearance | Off-white, semi-crystalline granules |
| Primary Applications | Dynamic mechanical parts, fluid-contact components, flexible structural elements |
| Key Features | High strength-to-weight ratio, excellent creep resistance, broad service temperature range |
| Processing Method | Injection molding, extrusion, blow molding |
| Standards Compliance | UL 94 HB; RoHS compliant; FDA-compliant grades available upon request |
| Storage Recommendation | Store in dry, cool conditions; desiccate before processing if exposed to humidity |
Q1: What are the key mechanical and thermal advantages of Hytrel E4074 compared to standard TPEEs?
A: Hytrel E4074 is a medium-hardness thermoplastic elastomer engineered for an optimal balance of tensile strength, dynamic fatigue resistance, and recovery after repeated flexing. It offers enhanced heat resistance over many general-purpose TPEEs, maintaining performance at continuous use temperatures up to approximately 120°C, with improved retention of elasticity under thermal cycling.
Q2: Is Hytrel E4074 suitable for applications requiring contact with oils, greases, or aliphatic hydrocarbons?
A: Yes — Hytrel E4074 exhibits good resistance to a broad range of non-polar media including mineral oils, greases, and aliphatic hydrocarbons, making it well-suited for under-hood automotive components, industrial seals, and fluid-handling parts where long-term exposure to such substances is expected.
Q3: How does Hytrel E4074 perform in injection molding and extrusion processes?
A: Hytrel E4074 is specifically formulated for excellent melt stability and consistent flow behavior in standard thermoplastic processing equipment. It demonstrates low moisture sensitivity, reduced tendency for splay or degradation during extended residence times, and good mold release characteristics — supporting high-cycle production with minimal post-processing requirements.
Q4: Can Hytrel E4074 be overmolded onto common engineering plastics like PBT or PC?
A: Yes — Hytrel E4074 provides strong interfacial adhesion when overmolded onto polar engineering thermoplastics such as PBT, PET, and polycarbonate, especially when proper mold temperature control and process parameter optimization are applied. Bond strength is typically sufficient for structural and functional two-shot applications without additional primers or surface treatments.
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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
