The research of redispersible rubber powder began in 1934 with the polyvinyl acetate redispersible latex powder of I.G. Farbenindus AC Company in Germany and the powder latex of Japan. The severe shortage of labor and construction resources after World War II forced Europe, especially Germany, to use various powder building materials to improve the construction efficiency. In the late 1950s, Germany's Hurst and Wacker Chemical started the industrial production of redispersible latex powder. At that time, the redispersible emulsion powder was also mainly of polyvinyl acetate type, mainly used for wood adhesive, wall primer and cement-based wall materials. However, due to the limitations of PVAc rubber powder, such as high minimum film-forming temperature, poor water resistance and poor alkali resistance, its use is greatly limited.
With the successful industrialization of VAE lotion, VA/VeoVa and other lotion, redispersible emulsion powder with a minimum film forming temperature of 0 ℃, good water resistance and alkali resistance was developed in the 1960s. After that, its application was widely promoted in Europe, and its application scope gradually expanded to various structural and non structural building adhesives, dry mixed mortar modification, wall insulation and finishing systems, wall screed and sealing plaster The field of powder coating and building putty.
