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Construction Chemistry
RDP (Redispersible Polymer Powder)
Formula:
Сополимер VAE
GOST/CAS:
CAS 24937-78-8
RDP (Redispersible Polymer Powder) is a high-quality, multi-functional organic binding component produced by the spray-drying of a specialized water-based emulsion. When mixed with water, the powder easily redisperses back into a liquid emulsion, fully retaining the original properties of the polymer. Due to its unique ability to form a durable polymer film within mortar matrices, RDP is an indispensable additive in the manufacturing of modern dry-mix mortars, significantly improving their adhesion, flexibility, and long-term durability.
Applications
Tile Adhesives Manufacturing: Serves as the core polymer modifier for thin-set mortars (including C1 and C2 classifications). It ensures high bond strength to various substrates and prevents the sag of heavy tiles and large-format porcelain stoneware.
Self-Leveling Underlayments & Screeds: Used in flooring compounds to increase flexural and compressive strength, reduce shrinkage cracks, improve flowability, and enhance abrasion resistance.
External Thermal Insulation Composite Systems (ETICS/EIFS): Incorporated into adhesive and base coat mortars for fixing insulation boards (EPS, mineral wool) and creating a flexible, mesh-reinforced protective layer.
Repair & Waterproofing Mortars: Applied as a polymer modifier in non-shrink repair mortars and rigid or semi-flexible waterproofing membranes to significantly reduce water permeability.
Key Advantages
Superior Adhesion & Cohesion: RDP forms a continuous polymer matrix within the cement structure, dramatically increasing the bond strength to difficult, non-porous, and low-absorption substrates.
Flexibility & Crack Resistance: It lowers the elastic modulus of the cement matrix, allowing the cured mortar to accommodate thermal and mechanical stress without cracking.
Stability & Workability: Manufactured under strict quality control standards, ensuring consistent particle size, excellent wetting properties, and effortless distribution in dry mixes.
Water Retention: Optimizes the cement hydration process by retaining moisture within the fresh mortar, which is crucial when applying thin layers over highly porous substrates.
Storage & Transportation
- Store in dry, cool warehouse areas in tightly sealed original packaging. Protect from high humidity.
- Recommended temperature range: -10°C to +30°C. Avoid prolonged exposure to temperatures above +40°C to prevent powder caking under pressure.
- Keep away from direct sunlight and avoid overloading pallets (do not stack pallets three or more tiers high without heavy-duty racking). The product is highly hygroscopic.
- Transport is permitted by all types of covered vehicles, provided that packaging integrity and seal are maintained. The material is classified as non-hazardous for transport. Shelf life is 12 months from the date of manufacture.
Frequently bought together
Technical Specifications
Appearance
White or almost white, free-flowing powder
Composition
Vinyl acetate-ethylene copolymer (VAE)
Solid Content
≥ 98.0%
Ash Content (Anti-caking agent)
10% - 14%
Particle Size
Max 150um
Minimum Film-Forming Temp. (MFFT)
0°C. . . +5°С
pH (10% aqueous dispersion)
6.0 - 8.0
Supply info
- Industrial multi-layer paper bags with a polyethylene inner liner, 25 kg net weight.
- Large-capacity packaging (Big-Bags) of 500 kg / 1000 kg for automated large-scale production lines.