Flexible redispersible polymer powder (RDP) improves flexibility and adhesion in dry-mix mortars after re-dispersion. It forms a polymer film during curing, helping mortars absorb movement and resist cracking or debonding. It is widely used in tile adhesives, exterior mortars, and ETICS systems where durability under thermal stress and substrate movement is required.
High Compressive Strength
Excellent Dimensional Stability
Reduced Shrinkage Deformation
Enhanced Surface Hardness
As a leading manufacturer of Redispersible Polymer Powder in China, LANDU has developed the innovative ACCURATE™ brand. Our RDP chemical solutions are trusted by customers in over 60 countries worldwide.
| Appearance | Unit | Typical Range/Description | Purpose & Significance |
|---|---|---|---|
| Appearance | – | White or slightly yellow free-flowing powder | The most basic sensory requirement to check for agglomerates and impurities |
| Ash Content (Ignition Residue) | wt% | Typically 8% – 15% | Measures the polymer (latex) content; generally, lower ash content corresponds to higher cost |
| Moisture Content | wt% | ≤ 1.5% – 2.0% | Excessive moisture impairs powder flowability and storage stability, potentially causing caking |
| Minimum Film Forming Temperature (MFFT) | °C | Typically 0°C – 10°C | The lowest temperature required for redispersible polymer powder particles to form a continuous polymer film. Below the MFFT, film formation fails and performance drops significantly. This parameter must be considered in both summer and winter formulations |
| Glass Transition Temperature (Tg) | °C | Variable | Low Tg: (-10°C, flexible) high flexibility and high adhesion; Mid Tg: (0°C, semi-flexible) balanced performance; High Tg: (15°C, rigid) high hardness and high strength |
LANDU is a reliable manufacturer of high-performance redispersible polymer powder (RDP) in China. We adopt premium VAE emulsion and advanced spray-drying equipment for stable, consistent quality. Our in-house R&D team provides tailored OEM formulas and technical support for your specific applications.
| Function | Model | Emulsion Type | Protective Colloid | Solids Content | Ash Content | Bulk Density | Glass Transition Temperature (Tg) | Minimum Film Forming Temperature (MFFT) | pH Value | Type |
| High Performance | 5045N | VAE | PVA | >99% | 12±2 wt% | 400–600 g/L | -15°C | 0 °C | 6–8 | Flexible |
| High Performance | 5050N | VAE | PVA | >99% | 12±2 wt% | 400–600 g/L | -18°C | 0 °C | 6–8 | Flexible |
Product Naming Convention:
The first two digits indicate the emulsion type:
40–49: VAE emulsion
50–59: VAE emulsion
70–79: VA/E/VV emulsion
80–89: VA/VV/AC emulsion
90–99: S/AC emulsion
The last two digits are related to the glass transition temperature (Tg) of the product. A higher number indicates a lower Tg.
The final letter indicates the product grade:
N = Standard Grade
E = Enhanced Grade
H = Hydrophobic Grade
L = Self-Leveling Grade
When selecting latex powder, the first step is to clearly define the performance objectives—specifically, which properties of the mortar require improvement: is it adhesion, flexibility, or water resistance?
Recommended: High-Tg Redispersible Polymer Powder
Recommended: Low-Tg Redispersible Polymer Powder
Recommended: VAE/VeoVa Terpolymer Powder
Recommended: Vinyl Acetate–Ethylene–Acrylate Terpolymer Powder
Recommended: High-Tg VAE or S/AC Redispersible Polymer Powder
Low-Tg RDP Applications
Low-Tg redispersible polymer powder (e.g. Tg -10°C) provides excellent flexibility and crack resistance. It is recommended for applications requiring high deformability, such as flexible tile adhesive (C2 grade), skim coat mortar and anti-crack wall putty.
High-Tg RDP Applications
High-Tg redispersible polymer powder (e.g. Tg 15°C) offers higher hardness, compressive strength and bonding performance. It is suitable for applications requiring high rigidity and adhesion strength, such as self-leveling mortar, rigid tile adhesive (C0/C1 grade) and interface treatment mortar.
When selecting latex powder, the first step is to clearly define the performance objectives—specifically, which properties of the mortar require improvement: is it adhesion, flexibility, or water resistance?
With three factories and an advanced R&D center, we guarantee consistent quality for large orders. We have distributors in many countries including Poland, Greece, and Switzerland.
If you’re not satisfied with the sample, our R&D team will refine the product to your exact specification – completely free of charge!
With LANDU, you get accurate products, reliable quality, and outstanding service. Simply send us a message, and we’ll take care of everything!
Our RDP powder ensures smooth, even spreading while preventing segregation or bleeding. It adds elasticity to handle substrate movements and improves durability against foot traffic and impacts.
