| 摘要 |
<p>An aqueous emulsion of a nonpolar silane is disclosed. The emulsion contains an emulsifier system that prevents particle size increase with time. The emulsifier system contains a primary surfactant that prevents coalescence of the particles by ionic repulsion between particles and a cosurfactant. The amounts of each surfactant in the emulsifier system are sufficient to provide an outer mixed monolayer that contacts the water phase and a second inner monolayer of essentially water insoluble cosurfactant. The mixed monolayer is a combination of both surfactants. The surfactant bilayer provides a barrier that prevents diffusion of the silane into the water phase, thereby minimizing diffusion of the silane out of the particle.</p> |
