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Thermoplastic elastomer based on styrene–ethylene/butylene–styrene (SEBS) triblock architecture.
Excellent melt processability via extrusion, injection molding, and blow molding.
Superior UV and thermal stability versus conventional SBS grades.
High tensile strength and elongation with outstanding elastic recovery.
Compatible with polypropylene (PP), polyethylene (PE), and various plasticizers for compound formulation.
Soft-touch overmolding for automotive interior trim and instrument panels.
TPE-based medical tubing and device components requiring biocompatibility support.
High-performance polymer blends for durable consumer goods housings.
Flexible packaging sealants and laminating adhesives requiring clarity and flexibility.
| Chemical Type | Styrene–ethylene/butylene–styrene (SEBS) triblock copolymer |
| Product Form | Pellets |
| Appearance | Off-white to light tan, free-flowing pellets |
| Primary Applications | Thermoplastic elastomer compounds, soft-touch overmolding, medical-grade blends |
| Key Features | High elasticity, excellent thermal stability, good compatibility with polyolefins |
| Benefits | Reduced need for vulcanization, recyclable processing, low extractables |
| Processing Temperature Range | 180–230 °C (recommended) |
Q1: What is the primary functional role of Kraton MD6944 in polymer formulations?
A: Kraton MD6944 is a linear triblock SEBS elastomer designed primarily as a compatibilizer and impact modifier—especially effective in enhancing toughness, melt elasticity, and phase adhesion in polyolefin-based blends and thermoplastic compounds.
Q2: Is Kraton MD6944 suitable for food-contact or medical-grade applications?
A: Kraton MD6944 is not pre-certified for direct food-contact or medical device applications. Its suitability depends on full regulatory assessment by the formulator—including extraction testing, intended use conditions, and compliance with applicable regional requirements for final articles.
Q3: How does Kraton MD6944 differ from other SEBS grades like G or D series?
A: Unlike higher-styrene G-series grades (which emphasize rigidity) or lower-molecular-weight D-series grades (optimized for viscosity reduction), MD6944 offers a balanced styrene–butadiene ratio and molecular architecture tailored for improved processability in extrusion and injection molding while maintaining strong elastomeric performance in PP/PE blends.
Q4: What processing methods are recommended for Kraton MD6944?
A: Kraton MD6944 is compatible with standard thermoplastic processing techniques including twin-screw compounding, extrusion, and injection molding. It typically requires moderate shear and temperature profiles—avoid prolonged residence at elevated temperatures to preserve its triblock integrity and performance attributes.
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