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Redispersible Polymer Powder

01 Overview

Redispersible polymer powder is a key material for enhancing drymortar performance. It forms a uniform polymer film within the mortar, improving its adhesion, flexibility, workability, and durability.

Redispersible Polymer Powder is the most important binder in cement-based, gypsum-based dry powder materials. Redispersible Polymer Powder is a spray-dried powder of polymer emulsion. Redispersible Polymer Powder is re-emulsified with water and has the same properties as the original emulsion, that is a film can be formed after water evaporation. This film has high toughness, weather resistance and adhesion to a substrate. In addition, the latex powder with hydrophobic properties can improve the waterproof performance of the waterproof mortar.

Product Polymer Type Key Features Tg °c Tile Adhesive EIFS/ETICS Skim coat/

Wall Putty

 Self leveling mortar Hydrophobic

Compounds
86353 Vac/E High flexible -10 ●● ●●● / / ●
7033 Vac/E Performance balance 3 ●● ●● ●● ●● /
7028 Vac/E Economic type 3 ●● ● / / /
7053 Vac/E Performance balance,Better strength 3 ●●● ●● ● ●● /
66143 Vac/E Excellent water-resistance 10 ●●● ●●● / ● /
66153 Vac/E Excellent weather resistance 12 ●●● ●●● / ●● /
7035H Vac/E Hydrophobic, flexible 3 ●● ●●● ●● ●● ●●●
6033T Vac/E High bonding strength 16 ●● ●● ●●● ●● /
7033T Vac/E Performance-enhanced 3 ●● ●● ●●● ● /
6033F Vac/E Good fluidity 16 ● ● ● ●●● /
Polymer Type: Vac=vinyl acetate; E=ethylene; VeoVa=Vinyl ester of Versatic acid 10; VC=Chloroethylene

*all product are formaldehyde(CH2O) free

02 Application Features

Performance of Redispersible Polymer Powder in drymix mortar:

  1. Improve the adhesion of dry mortar to various substrates and ensure the weather resistance of mortar bond strength under various conditions of use. For example, to improve the bond strength between mortar and EPS board, EPS particles, concrete walls and brick walls in the thermal mortar,Recommended RDP-86353;
  2. RDP enhances the bond strength between mortar and tiles, extends the open time of tile adhesive, and improves wettability. Under specific performance requirements, RDP-66143 can improve the water resistance of tile adhesive, thereby increasing its water resistance strength;
  3. Redispersible Polymer Powder can reduce the water absorption of the material, the special hydrophobic latex powder effect is more obvious. Reduce water and damage caused by water to the molded mortar,Recommended RDP-7035H;
  4. Some types of Redispersible Polymer Powder can improve the sag resistance and fluidity of the mortar, in order to improve the construction performance of the mortar,Recommended RDP-6033F;

03 About SIDLEYchem Plant

  1. SIDLEYCHEM operates two modern production plants for Redispersible polymer powder located in Henan and Tianjin. Concurrently, we will establish new production lines overseas to bring products closer to customers, enabling faster transportation and lower costs.
  2. SIDLEYCHEM boasts an annual production capacity of 15,000 tons of Redispersible polymer powder, utilizing raw materials exclusively supplied by Celanese. We offer various grades to meet diverse customer requirements.
  3. SIDLEYCHEM leverages its advanced R&D department to develop new Redispersible polymer powder products and applications, delivering performance comparable to international brands.

04 Questions & Answers

  1. 1
    What is Redispersible Polymer Powder?

    Redispersible polymer powder is a polymer powder produced by spray drying a copolymer of vinyl acetate, versatic acid, acrylic acid ester, and other monomers. When re-dispersed in water, it reconstitutes into an emulsion with identical chemical properties to the original emulsion.

  2. 2
    Production Process of Redispersible Polymer Powder

    Polymer emulsions undergo spray drying, aggregating from minute 2-micron particles into spherical particles of 80–120 microns. Their surfaces are coated with anti-caking powder, forming a dry polymer powder. This powder facilitates both storage and usage.

    When mixed with water, cement, or gypsum-based mortar, the Redispersible Polymer Powder rapidly redisperses, restoring properties similar to the original emulsion. Hence, it is known as redispersible polymer powder.

  3. 3
    Composition of Redispersible Polymer Powder

    Redispersible polymer powder typically appears as a white powder, though some products may exhibit other colors due to specific requirements or variations in composition. Its components include:

    1. Polymer Resin: As the core component of the powder particles, polymer resin is crucial for the functionality of redispersible polymer powder. It is generally produced by spray-drying VAE emulsions.
    2. Additives: To comprehensively enhance the performance of redispersible latex powder, additional materials are incorporated to improve mortar strength and reduce costs.
    3. Protective Colloid: A hydrophilic substance coating the surface of redispersible latex powder particles, typically polyvinyl alcohol, designed to maintain the powder’s stability.
    4. Anti-caking agent: As a fine mineral filler, this agent primarily prevents caking during storage and transportation of Redispersible polymer powder while enhancing its flowability, facilitating smooth discharge from paper bags or tank trucks.

05 Product Video

06 Related Products

07 Comments

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