English
Español
tiếng việt
русский
Excellent balance of thermoplastic processability and elastomeric performance at elevated temperatures.
High resilience and low permanent set after repeated flexing or compression.
Good resistance to oils, greases, and many common industrial fluids.
Enhanced flow characteristics for improved mold filling in thin-walled and complex geometries.
Consistent melt viscosity and narrow molecular weight distribution for reliable processing repeatability.
Automotive under-hood components including air ducts, sensor housings, and vibration dampers.
Industrial power transmission belts and timing belt covers requiring fatigue resistance.
Consumer appliance parts such as pump diaphragms, flexible couplings, and sealing boots.
Medical device tubing and connectors where biocompatibility and sterilization resistance are required.
High-performance sporting goods components including ski bindings and bicycle suspension bushings.
| Chemical Type | Thermoplastic Polyester Elastomer (TPEE) |
| Product Form | Pellets |
| Appearance | Off-white to light tan, free-flowing pellets |
| Primary Applications | Dynamic mechanical components requiring high fatigue life and thermal stability |
| Key Features | High tensile strength, excellent creep resistance, good low-temperature flexibility |
| Processing Method | Injection molding, extrusion, blow molding |
| Regulatory Compliance | Meets FDA 21 CFR §177.1640 for repeated food contact (when specified); RoHS compliant |
| Storage Conditions | Store in dry, cool conditions (<25°C) with relative humidity <50%; desiccant drying recommended prior to processing |
Q1: What distinguishes Hytrel E4078W from other Hytrel grades?
A: Hytrel E4078W is a water-dispersible thermoplastic elastomer based on polyether-ester chemistry, specifically engineered for aqueous processing applications such as coatings, adhesives, and functional textile finishes. Unlike standard Hytrel grades, it forms stable dispersions in water without requiring organic solvents or surfactants typically needed for emulsification.
Q2: Is Hytrel E4078W suitable for use in food-contact or medical applications?
A: Hytrel E4078W is not pre-approved for direct food-contact or implantable medical use. Its suitability for regulated applications depends on full formulation assessment, end-use conditions, and compliance with applicable regional regulatory frameworks. Customers must conduct appropriate testing and validation to confirm compliance for their specific application and jurisdiction.
Q3: How should Hytrel E4078W be dispersed and processed in water-based systems?
A: It is designed to disperse readily in water using low-shear mixing at ambient to moderately elevated temperatures (typically below 60 °C). Optimal dispersion stability is achieved when pH is maintained between 6.5 and 8.5 and ionic strength is kept low. High-shear homogenization or ultrasonication may be used for finer particle distribution, but excessive energy input can affect dispersion integrity.
Q4: Can Hytrel E4078W be blended with other polymers in aqueous formulations?
A: Yes — it demonstrates good compatibility with selected water-soluble or water-dispersible polymers such as polyvinyl alcohol (PVA), acrylic emulsions, and certain cellulose derivatives. Compatibility should be confirmed empirically through stability testing, film formation evaluation, and mechanical performance assessment under intended drying and curing conditions.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
Have a Questions? Call Us:
Add:
Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
