Hollow microspheres made from dispersed particle compositions

Abstract From the Canadian patent

Hollow porous and non-porous microspheres are made from dispersed particle film forming compositions comprising dispersed particles, a binder, a film stabilizing agent a, dispersing agent and a continuous liquid phase. The hollow porous microspheres have walls with voids which are interconnected to each other and to the inner and outer wall surfaces. The microspheres can be made from dispersed particles of ceramic, glass, metal, metal glass plastic, and, mixtures thereof. The microspheres can be used as filler materials and as supports and enclosures for catalysts. The hollow microspheres are made by feeding the dispersed particle composition and a blowing gas to a coaxial blowing nozzle …