SBR Latex Bonding Agent for Concrete
CAS Number: 9010-81-5
Styrene-butadiene rubber (SBR) latex is a versatile polymer bonding agent used as a primer/slurry coat to maximize adhesion between new and old concrete or between concrete and repair mortars. When mixed with cement and applied as a slurry, it significantly improves bond strength due to the polymer's flexibility and adhesion to both the substrate and the overlay. Also used as an additive in repair mortars to improve crack resistance and waterproofing.
Technical Specifications
| pH | 9.0-11.0 |
| appearance | White milky emulsion |
| solid content (%) | 50±2 |
| viscosity (mPa·s) | 500–3000 |
| chloride content (%) | ≤0.05 |
Applications
- Bonding new concrete overlays to existing substrates
- Interface treatment before repair mortar application
- Modified mortar and render formulations
- Waterproofing slurry coats for below-grade structures
- Tile adhesive modification for improved flexibility
Key Features
- Significantly improves bond strength of concrete repairs and overlays
- Flexible polymer film bridges micro-movement at interface
- Dual use as bonding slurry and mortar additive
- Cost-effective and widely available waterborne system
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