| abstract |
The present invention relates to a stable silylated polymer emulsion and its preparation method and uses. The present emulsion comprises a silylated polymer, water, nano silica and an optional emulsifying agent. By using the preparation method of the invention, nano silica can be homogeneously dispersed in a silylated polymer. Without any surface modification, nano silica can be directly added to the silylated polymer and has good compatibility with the silylated polymer. The prepared emulsion has a solid content of < 85% , a particle size of less than 3 μm, being of a low VOC content that well meets the environmental protection requirements, and a shelf life of over half a year when stored at room temperature. After volatilization of water, the emulsion can crosslink to form an elastomer, wherein nano silica can play a role of enhancing the mechanical strength of the crosslinked polymer. In use, the emulsion can be directly diluted with water. The emulsion can be used for formulating coatings, adhesives, sealants, inks, skin care products and detergents. |