Siloxane containing water soluble polymer emulsion and redispersible emulsion powder and its preparation method

The present invention discloses water-soluble polymer emulsion containing siloxane and redispersable emulsion powder and their preparation method. The space-stable silicon-containing water-soluble polymer emulsion is obtained by using vinyl multifunctional organic siloxane functional monomer and alkyl methacrylate, hydroxyalkyl ester, alkyl acrylate and carboxylic acid cross-linking monomer through emulsion polymerization mode. Its redispersable emulsion powder is made up by using space-stable siloxane-containing water-soluble mother body polymer emulsion through a specific spray-drying process. The invented products can be extensively used in building field.