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Metablen S-2260 is a dedicated silicone-acrylic core-shell impact modifier for ASA/PC-ASA systems in the S series, featuring ultra-high impact strength + long-term weatherability, with enhanced damp-heat resistance, aging resistance and chemical resistance, suitable for automotive exteriors, high-end electronic enclosures and other applications requiring strict comprehensive durability and appearance requirements
Silicone-acrylic rubber core-shell structure (MMA/styrene/organosilicon polymer), excellent compatibility with ASA and PC-ASA
Ultra-high impact strength, outstanding low-temperature impact performance at -30℃, long-term stable weatherability without yellowing outdoors
Comprehensive enhancement of damp-heat resistance, aging resistance and chemical resistance, slow performance degradation during long-term use
Good processing fluidity, no negative impact on the original appearance and dimensional stability of the substrate
Automotive exterior parts (front grilles, pillar trim panels, rearview mirror housings)
High-end electronic and electrical enclosures (outdoor communication base stations, automotive electronic components)
ASA/PVC outdoor weather-resistant structural parts (high-end profiles, weather-resistant decorative panels)
| Product Information | |
| Brand/Model | Mitsubishi Metablen S-2260 |
| Type | Silicone-Acrylic Core-Shell Impact Modifier |
| Performance & Compatibility | |
| Core Performance | Ultra-High Impact, Long-Term Weatherability, Damp-Heat Resistance |
| Compatible Resins | ASA, PC-ASA, ABS, PVC, PC |
| Packaging & Storage | |
| Packaging | 20 kg/bag |
| Storage | Cool/dry place, seal after opening |
Q1: What is the primary polymer matrix compatibility of Mitsubishi S-2260?
A: Mitsubishi S-2260 is specifically engineered for use in rigid PVC formulations, where it enhances impact resistance without compromising dimensional stability or processability. It demonstrates good compatibility with unplasticized PVC (uPVC) and is commonly incorporated into window profiles, pipe, and siding compounds.
Q2: How does S-2260 affect processing behavior during extrusion or injection molding?
A: S-2260 is designed to maintain favorable melt rheology in PVC systems, supporting smooth extrusion and consistent output rates. It typically does not induce excessive viscosity increase or thermal degradation under standard uPVC processing conditions, contributing to stable die performance and reduced scrap rates.
Q3: Is S-2260 suitable for applications requiring long-term weather resistance?
A: Yes — when compounded into high-quality uPVC formulations with appropriate stabilizer and pigment systems, S-2260 supports excellent retention of impact strength and surface integrity after prolonged UV exposure and thermal cycling, making it well-suited for exterior building products.
Q4: What is the typical dosage range for optimal impact modification?
A: S-2260 is typically used at low concentrations, generally ranging from 0.1% to 2% by weight relative to the PVC resin, depending on the desired balance of impact performance, stiffness, and cost-efficiency. Final dosage should be determined through formulation-specific evaluation.
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