English
Español
tiếng việt
русский
Excellent abrasion resistance for demanding mechanical environments.
High tensile strength and elongation at break, enabling robust dynamic performance.
Good low-temperature flexibility down to –30 °C.
Outstanding processability via injection molding and extrusion.
Hydrolysis-resistant aliphatic polyester-based chemistry for enhanced long-term stability.
Industrial rollers and conveyor belts requiring wear resilience.
Automotive interior trim components including soft-touch overlays and gaskets.
Medical tubing and fluid-handling devices compliant with ISO 10993 biocompatibility guidelines.
High-performance footwear midsoles and outsoles.
Flexible couplings and vibration-damping mounts in machinery.
| Chemical Type | Aliphatic polyester-based thermoplastic polyurethane (TPU) |
| Product Form | Pellets |
| Appearance | Off-white to light tan, free-flowing granules |
| Primary Applications | Extrusion, injection molding, blow molding |
| Key Features | Abrasion resistance, flexibility, processability, hydrolytic stability |
| Benefits | Extended service life, reduced maintenance, design freedom for complex geometries |
| Density (ASTM D792) | 1.18–1.20 g/cm³ |
| Melt Flow Index (230 °C/2.16 kg, ASTM D1238) | 10–14 g/10 min |
Q1: What is the primary function of A 78 P 4766 in TPU formulations?
A: A 78 P 4766 is a polyether-based thermoplastic polyurethane elastomer designed to enhance melt processability, improve low-temperature flexibility, and provide balanced mechanical properties—particularly elongation and resilience—in extruded or injection-molded TPU compounds.
Q2: Is A 78 P 4766 compatible with aromatic and aliphatic TPU systems?
A: Yes, A 78 P 4766 demonstrates broad compatibility with both aromatic and aliphatic TPU base resins due to its polyether backbone and tailored molecular architecture, enabling uniform dispersion and stable phase morphology during compounding.
Q3: How does A 78 P 4766 affect processing behavior in high-speed extrusion?
A: It reduces melt viscosity and improves thermal stability under shear, supporting consistent output rates and surface finish in high-speed extrusion—especially for thin-walled profiles and monofilaments—without significant degradation or plate-out.
Q4: Can A 78 P 4766 be used in applications requiring hydrolytic stability?
A: As a polyether-type TPU, A 78 P 4766 offers inherently better resistance to hydrolysis compared to polyester-based TPUs, making it suitable for humid environments or applications with intermittent water exposure—though long-term immersion performance depends on final part geometry and service 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
