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Excellent soft-touch feel with balanced elasticity and recovery performance.
Good processability on standard injection molding and extrusion equipment.
Outstanding compatibility with polypropylene (PP) and polyethylene (PE) substrates for overmolding.
Low extractables and compliant with FDA 21 CFR 177.2600 for food-contact applications.
Enhanced weather resistance and UV stability without additional stabilizer loading.
Soft-grip handles for power tools and household appliances.
Overmolded seals and gaskets in automotive interior components.
Flexible hinges and living hinges in consumer electronics enclosures.
Sealing profiles for medical device housings requiring biocompatibility.
Ergonomic grips for sports equipment and personal care devices.
| Chemical Type | Thermoplastic Elastomer (TPE) – Styrenic Block Copolymer (SBC) based |
| Product Form | Pellets |
| Appearance | Translucent ivory pellets |
| Hardness (Shore A) | 55 ± 3 |
| Melt Flow Rate (230°C/2.16 kg) | 18–22 g/10 min |
| Density | 0.90–0.92 g/cm³ |
| Primary Applications | Overmolding, soft-touch finishing, flexible sealing |
| Key Features | PP/PE adhesion, low compression set, good low-temperature flexibility |
Q1: What is the primary function of PB-5201 in TPE formulations?
A: PB-5201 is a functionalized thermoplastic elastomer modifier designed to enhance melt processability, improve dispersion of fillers or pigments, and increase compatibility between polar and non-polar polymer phases—particularly in SEBS- or TPR-based blends.
Q2: Is PB-5201 suitable for food-contact or medical-grade applications?
A: PB-5201 is not pre-certified for direct food-contact or medical use. Its suitability depends on final formulation validation—including extraction testing, regulatory review, and compliance with applicable regional requirements. Customers must conduct full end-product qualification.
Q3: How should PB-5201 be incorporated into standard TPE compounding processes?
A: It is typically introduced during the masterbatch stage or early in twin-screw extrusion—added before or simultaneously with other functional additives. Good thermal stability allows processing at conventional TPE temperatures (160–220 °C), but residence time should be minimized to preserve functionality.
Q4: Does PB-5201 require drying prior to processing?
A: Yes—like most functional TPE modifiers, PB-5201 is hygroscopic. Recommended conditioning is 2–4 hours at 70–80 °C under vacuum or low-dew-point air to ensure optimal dispersion and avoid surface defects during molding or extrusion.
Q5: Can PB-5201 improve adhesion between TPE and rigid substrates like PP or ABS?
A: Yes—its reactive functionality promotes interfacial bonding in co-injection or overmolding applications, especially when paired with compatible base resins. Performance varies with substrate surface energy, mold temperature, and interfacial residence time.
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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
