What is Redispersible Polymer Powder?
Redispersible Polymer Powder (RDP) is a polymer-based powder used in the construction industry for various applications. RDP is obtained by spray drying of polymer emulsions. It is widely used in cementitious systems to improve the properties of mortar , such as adhesion, water resistance, and flexural strength. RDP is composed of various polymers, including vinyl acetate-ethylene (VAE), styrene-butadiene (SB), ethylene-vinyl chloride (EVC), and polyvinyl alcohol (PVA). These polymers are designed to be compatible with different types of binders, such as cement, lime, and gypsum. They are used in different types of applications, including tile adhesive, self-leveling compound, waterproofing membranes, and exterior insulation and finishing systems (EIFS). The manufacturing process of RDP involves three main stages: polymerization, emulsification, and spray drying. In the polymerization stage, the monomers are polymerized under specific conditions, such as temperature, pressure, and