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Redispersible Polymer Powder, known as RDP powder with CAS number 24937-78-8, is a spray-dried vinyl acetate-ethylene copolymer that redissolves in water during mixing and forms a flexible polymer film inside hardened mortar. In EIFS base coat and finish coat render, RDP powder is the additive that prevents cracking under thermal movement and provides the bond strength required for mesh-reinforced systems on exterior insulation boards.
With the rapid development of modern construction, the demand for high-performance dry mix materials continues to grow. Traditional cement-based mortars often face challenges such as poor adhesion, cracking, and low flexibility. To solve these issues, VAE RDP Powder (Redispersible Polymer Powder) has become a key additive in polymer modified mortar systems. By improving bonding strength and flexibility, VAE Powder for Dry Mix Mortar is widely used in tile adhesives, insulation systems, and repair mortars.