Metal effect pigments coated with SiO2, method for producing said metallic effect pigments and use

The invention relates to a method for coating metallic effect pigments with silicon oxide, in which alkoxysilane(s) and/or silicon halide(s) in organic solvent are reacted with water in the presence of metallic effect pigments, where the reaction includes at least two steps, where (a) the reaction i...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WINKELMANN PÄR, NGUYEN PHU QUI
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ARTIFICIAL STONE CEMENTS CERAMICS CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CORRECTING FLUIDS DYES FILLING PASTES INKS LIME, MAGNESIA METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES PREPARATION OF CARBON BLACK PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL REFRACTORIES SLAG SPRAYING OR ATOMISING IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES TREATMENT OF NATURAL STONE USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The invention relates to a method for coating metallic effect pigments with silicon oxide, in which alkoxysilane(s) and/or silicon halide(s) in organic solvent are reacted with water in the presence of metallic effect pigments, where the reaction includes at least two steps, where (a) the reaction is carried out with addition of acid in a first step and with addition of base in a second step or where (b) the reaction is carried out with addition of base in a first step and with addition of acid in a second step. The invention further relates to the coated metallic effect pigments producible by way of the method of the invention, and also to the use thereof.