PROCESS FOR PREPARING RECYCLABLE TEMPLATE HOLLOW PARTICLES USING WATER-BASED SILICA PRECURSORS

The disclosure provides a process for making hollow inorganic particles comprising: providing a recyclable template particle in an aqueous dispersion, wherein the recyclable template particle is prepared from an organic monomer; coating the recyclable template particle with a water-based silica prec...

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Bibliographische Detailangaben
Hauptverfasser:	WHIPPLE, DEVIN T, LASIO, JELENA, ROSEN, BRAD M, LEE, HAU-NAN, WOERNER, FRANCIS J
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON COMPOUNDS THEREOF DYES INORGANIC CHEMISTRY MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-METALLIC ELEMENTS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES PREPARATION OF CARBON BLACK THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
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Beschreibung
Zusammenfassung:	The disclosure provides a process for making hollow inorganic particles comprising: providing a recyclable template particle in an aqueous dispersion, wherein the recyclable template particle is prepared from an organic monomer; coating the recyclable template particle with a water-based silica precursor; maintaining the pH at about 2 to about 10 to form core/shell particles comprising a silica treatment on the recyclable template particle; removing the core/shell particles; and removing the recyclable template particle from the core/shell particles to form a hollow silica particle. La présente invention concerne un procédé de fabrication de particules inorganiques creuses, qui consiste à : prévoir une particule de gabarit recyclable dans une dispersion aqueuse, la particule de gabarit recyclable étant préparée à partir d'un monomère organique ; revêtir la particule de gabarit recyclable à l'aide d'un précurseur de silice à base d'eau ; maintenir le pH à une valeur d'environ 2 à environ 10 pour former des particules coeur/écorce comprenant un traitement de silice sur la particule de gabarit recyclable ; éliminer les particules coeur/écorce ; et retirer la particule de gabarit recyclable des particules coeur/écorce afin de former une particule de silice creuse.