🌟 SEA STAR CONCRETE RUBBER (SBR) 4815 (1+5)
High-Performance SBR Latex for Cementitious Systems
SEA STAR CONCRETE RUBBER 4815 is a ready-to-use aqueous dispersion of Styrene-Butadiene copolymer, engineered for exceptional performance and versatility in construction. It features high stability against electrolytes and is free from solvents, plasticizers, and film-forming aids — making it safe and efficient for demanding cement-based applications.
✅ Key Features and Benefits
💧 Enhanced Mortar Properties
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Boosts flexural strength by up to 50%
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Increases adhesive, abrasion, chemical, and water resistance
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Improves shrink/swell behavior
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Ideal for cement, lime, gypsum-based systems
🧪 Polymer Characteristics
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Film-forming above +3°C without additives
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Strongly liquefying effect: reduces water requirement
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Improves workability, plasticity, and wet adhesion
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Resistant to saponification and remains stable in alkaline/moist conditions
🏗️ Typical Applications
Construction Uses:
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Repair mortars for concrete restoration
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Leveling compounds and screeds
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Bonding adhesives and joint sealers
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Cement-based anti-corrosion coatings
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Primers and sealers
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Gypsum-based fillers and stoppers
⚙️ Physical and Technical Data
| Property | Value | Method |
|---|---|---|
| Solid Content, % | 48.5 | ISO 3251 |
| pH Value | 8.0 | ISO 976 |
| Surface Tension (mN/m) | 30.0 | — |
| Viscosity (mPas) | 30 | ISO 3219 |
| Glass Transition Temperature (°C) | –5 | — |
| Density (g/cm³) | 1.01 | — |
| Mean Particle Size (μm) | 0.15 | — |
| Min. Film Forming Temp. (°C) | < 3 | — |
| Tensile Strength (N/mm²) | 6 | — |
| Elongation at Break (%) | 1000 | — |










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