Chemistry of Redispersible Polymer Powder
October 30th 2024
The chemistry of RDP revolves around the polymerization of monomers to form stable polymer dispersions, which are later spray-dried to obtain the powder form. Key factors influencing the properties of RDPinclude:
Polymer Composition: Different polymers offer varying properties such as flexibility, adhesion, and water resistance. For instance, VAE-based RPPs are renowned for their excellent adhesion to various substrates.
Crosslinking Agents: Crosslinking agents can enhance the water resistance and mechanical strength of RPP. Common crosslinkers include polyfunctional aziridines and di-isocyanates.
Additives: Additives like dispersants, surfactants, and plasticizers are often incorporated to improve dispersion stability, flow properties, and flexibility of RDPformulations.
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