Redispersible Polymer Powder(RDP)
Redispersible Polymer Powder(RDP)
Celotech’s Redispersible Polymer Powder (RDP) is a versatile spray-dried thermoplastic resin that enhances the performance of construction materials. As a key additive in dry-mix mortars, it improves adhesion, flexibility, water resistance, and durability in applications such as Exterior Insulation and Finish Systems (EIFS), tile adhesives, self-leveling compounds, and repair mortars.
When mixed with water, RDP re-disperses into a stable emulsion, forming a polymer film that binds particles together. This significantly boosts cohesion strength, crack resistance, and workability in cement-based products. Ideal for tile renovation, wood board plastering putty, and caulking agents, it ensures long-term stability in harsh environments.
Widely used in modern construction, industrial flooring, and waterproofing systems, Celotech’s RDP delivers high compatibility with cellulose ethers and other additives, making it a preferred choice for sustainable, high-performance building solutions.
Product Details
Academic Name: RDP
HS Code: 3506 9190
Type: Chemical Powder Additive
Appearance: white powder
TG temperature: -8~25℃
Ash Content: 12%~25%
Applications: EIFS, Plaster, Tile Adhesive & Grouts, Repair Mortars
Redispersible Polymer
Powder (RDP) – Key
Functions & Benefits
Enhances Adhesion – Improves bonding strength in tile adhesives, mortars, and repair compounds.
Increases Flexibility – Reduces cracking in cement-based materials under stress or movement.
Improves Workability – Enhances mortar consistency for easier application and finishing.
Strengthens Durability – Extends the lifespan of construction materials in harsh conditions.
Enables Crack Resistance – Prevents micro-cracks in plasters, renders, and self-leveling floors.
Facilitates Redispersion – Reforms a stable emulsion when mixed with water for consistent performance.
Compatible with Additives – Works synergistically with cellulose ethers and other modifiers.
RDP-Vinabond® Packaging
Celotech’s RDP is packaged in 25 kg multilayer paper sacks with a polyethylene intermediate layer and an inner P.E. bag. To maintain its quality and performance, it is recommended to store RDP in a sealed container, away from moisture, direct sunlight, and fire sources.
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Frequently Asked Questions
What effects does Redispersible Polymer powder(RDP) have on the mortar strength?
After redispersible polymer powder is added into cement mortar, the tensile strength and flexural strength of mortar will be significantly improved, while the compressive strength won’t get significantly improved, even declined. The reason is that the toughening effect of redispersible polymer powder has enhanced the internal tensile strength of mortar and the bonding tensile strength of interface, and greatly improved the bonding tensile strength between mortar and base material.
What industries does HEC's application cover？
How does RDP improve mortar performance?
RDP enhances mortar by:
Increasing bond strength
Reducing water absorption
Improving impact resistance
Minimizing cracking
Enhancing workability
How does RDP work in construction materials?
In which construction applications is RDP commonly used?
RDP is widely used in:
External Thermal Insulation Composite Systems (ETICS)
Tile adhesives and grouts
Self-leveling floor compounds
Repair mortars
Plasters and renders
Caulking compounds
Is RDP compatible with other additives?
What industries does HEC's application cover？
What industries does HEC's application cover？
What industries does HEC's application cover？
