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Redispersible Polymer Powder (RDP)

Redispersible Polymer Powders (RDP Powders)

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Description

What Is Redispersible Polymer Powder (RDP)?

Redispersible Polymer Powder (RDP) is a free-flowing, white powder made by spray-drying special polymer emulsions. When mixed with water, the powder redisperses back into a stable polymer emulsion, giving it excellent bonding and performance-enhancing properties. RDP is a key additive widely used in dry-mix mortar formulations and various construction materials.

How RDP Works

RDP consists of polymer particles that, once mixed with water, reconnect and form a flexible, continuous polymer film.
This film significantly improves:

Adhesion to different surfaces
Flexibility and crack resistance
Workability of the mortar
Durability and weather resistance

Technical Features of RDP Powders

Typical physical and chemical properties include:

Property Typical Value

Appearance White / off-white powder

Solid Content 98% ± 1%

Ash Content 10–14%

Bulk Density 450–650 g/L

pH (10% solution) 5–8

MFFT 0–15°C (depending on grade)

Tg -10°C to +15°C

Particle Size (D50) 80–120 μm

Applications of Redispersible Polymer Powder

RDP is essential in many dry-mix mortar industries, including:

1. Tile Adhesives & Grouts

Strong bonding to tiles and substrates
Improved slip resistance and flexibility
Better water retention and long-term adhesion

2. Wall Putty & Skim Coats

Smooth application
Crack resistance
Enhanced surface strength

3. External & Internal Wall Renders

Excellent flexibility to reduce cracking
Strong adhesion
Better weather and freeze-thaw resistance

4. Self-Leveling Compounds

Good flowability
High tensile & flexural strength

5. Waterproofing Mortars

Improves impermeability
Increases elasticity and bonding

6. Repair Mortars

Enhances adhesion to old concrete
Provides good strength and durability

Advantages of Using RDP in Dry Mix Mortars

Increased adhesion strength
Better flexibility & deformability
Improved water retention
Enhanced abrasion resistance
Shrinkage reduction & crack prevention
Better freeze–thaw stability
Improved workability and application properties

RDP is a versatile and highly effective material for improving the performance of modern construction mixes.

Why Choose Our RDP Powder?

Stable and consistent quality
Tailor-made formulations for different mortars
Strong technical support and application guidance
Competitive pricing for global markets
Fast delivery and reliable supply

About Us – Professional Manufacturer of Redispersible Polymer Powders

We are a leading manufacturer specializing in Redispersible Polymer Powders (RDP) and construction-grade polymer additives. With advanced spray-drying technology and strict quality control systems, we provide stable, high-performance RDP solutions for global dry-mix mortar producers.

Our production lines use environmentally friendly raw materials and continuous automation systems to ensure consistency and reliability. We offer multiple polymer types designed for applications in tile adhesive, wall putty, EIFS, self-leveling, plaster, and repair mortars.

Our Strengths

Modern spray-drying production facilities

Experienced R&D and technical support team

Stable supply and large production capacity

Customized formulations based on customer needs

Global export experience and fast delivery

We are committed to providing professional, stable, and cost-effective RDP Powder solutions for construction material manufacturers worldwide.

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