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High clarity and excellent optical transparency for demanding aesthetic applications.
Outstanding abrasion resistance and mechanical toughness, even at low temperatures.
Good processability via injection molding and extrusion with minimal thermal degradation.
Hydrolysis-stabilized formulation for enhanced long-term performance in humid environments.
Non-phthalate, REACH-compliant composition supporting sustainable material selection.
Medical tubing and fluid delivery components requiring biocompatibility support.
Transparent protective films and overmolded grips for consumer electronics.
High-durability seals, gaskets, and dynamic elastomeric parts in industrial equipment.
Soft-touch automotive interior trim and decorative overlays.
Wearable device housings and flexible sensor encapsulation layers.
| Chemical Type | Thermoplastic Polyurethane (TPU), Polyester-based |
| Product Form | Pellets |
| Appearance | Natural, translucent pellets |
| Primary Applications | Medical devices, consumer electronics, automotive interiors, industrial seals |
| Key Features | Clarity, abrasion resistance, hydrolysis stability, melt processability |
| Benefits | Design freedom with transparency, extended service life, regulatory compliance, consistent processing |
| Processing Methods | Injection molding, extrusion, blow molding |
| Regulatory Status | REACH compliant; meets USP Class VI requirements (when processed per Lubrizol guidelines) |
Q1: What is the primary function of Lubrizol GP55DB NAT 023/25 in TPU formulations?
A: GP55DB NAT 023/25 is a specialized polymeric processing aid designed to enhance melt flow, reduce extrusion pressure, and improve surface finish in thermoplastic polyurethane (TPU) compounds—particularly during high-speed extrusion and injection molding.
Q2: Is GP55DB NAT 023/25 compatible with all common TPU chemistries (e.g., polyester-, polyether-, and polycaprolactone-based)?
A: Yes—it demonstrates broad compatibility across major TPU families, including aromatic and aliphatic grades. Performance optimization may vary depending on TPU polarity, molecular weight, and thermal history, so formulation-specific evaluation is recommended.
Q3: How does GP55DB NAT 023/25 affect mechanical properties of the final TPU part?
A: When used at typical dosage levels, it generally maintains key mechanical performance—including tensile strength, elongation, and abrasion resistance—while significantly improving processability. Subtle reductions in modulus or hardness may occur at higher loadings, but these are usually within acceptable ranges for most applications.
Q4: Can GP55DB NAT 023/25 be used in applications requiring regulatory compliance for food contact or medical devices?
A: GP55DB NAT 023/25 is not pre-qualified for direct food-contact or medical device applications. Its use in such regulated end-uses requires full formulation-level assessment, including migration testing and regulatory review by the responsible party.
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