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Excellent melt processability for injection molding and extrusion
Outstanding abrasion resistance and mechanical toughness
Good low-temperature flexibility down to –40 °C
Enhanced hydrolytic stability compared to conventional polyester TPUs
Compatible with common plasticizers and colorants for formulation flexibility
Automotive interior trim and soft-touch overmolding
Consumer electronics protective cases and gaskets
Industrial hoses and fluid-handling tubing
Footwear midsoles and outsole components
Medical device tubing and non-implantable wearable components
| Chemical Type | Polyester-based thermoplastic polyurethane (TPU) |
| Product Form | Natural-colored pellets |
| Appearance | Opaque, off-white to light tan granules |
| Primary Applications | Overmolding, extrusion, injection molding |
| Key Features | High elasticity, good oil resistance, recyclable |
| Benefits | Reduced cycle time, excellent surface finish, consistent batch-to-batch performance |
| Processing Temperature Range | 180–220 °C (recommended melt temp) |
| Storage Conditions | Store in dry, cool conditions; desiccant recommended for extended storage |
Q1: What is the primary function of Lubrizol 5703 in TPU formulations?
A: Lubrizol 5703 is a high-performance processing aid and surface modifier designed to enhance melt flow, reduce extrusion torque, and improve surface gloss and release characteristics in thermoplastic polyurethane (TPU) compounds—without compromising mechanical integrity or thermal stability.
Q2: Is Lubrizol 5703 compatible with all common TPU chemistries (e.g., polyester-, polyether-, and polycaprolactone-based TPUs)?
A: Yes, Lubrizol 5703 demonstrates broad compatibility across major TPU families. It is especially effective in demanding applications such as thin-gauge films, overmolding, and precision extrusions where consistent dispersion and long-term stability are critical.
Q3: How is Lubrizol 5703 typically incorporated into TPU production?
A: It is most commonly added during compounding via twin-screw extrusion, either as a masterbatch or direct feed. Due to its low volatility and thermal stability, it remains effective under standard TPU processing temperatures (160–220 °C) without significant degradation or volatilization.
Q4: Does Lubrizol 5703 affect the regulatory compliance status of finished TPU articles?
A: Lubrizol 5703 is formulated to support regulatory readiness for applications requiring food contact, medical device components, or consumer goods. While final compliance depends on the full formulation and intended use, the additive itself contains no intentionally added heavy metals, phthalates, or restricted substances commonly associated with regulatory concerns.
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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
