Method for producing zeta negative nanodiamond dispersion and zeta negative nanodiamond dispersion

The present invention relates to a method for producing zeta negative single digit carboxylated nanodiamond dispersion. The method comprises adjusting pH of zeta negative carboxylated nanodiamond suspension to at least 7, and subjecting the pH adjusted suspension to beads milling. The present invent...

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Bibliographische Detailangaben
Hauptverfasser:	Syrën, Jesse, Myllymäki, Vesa
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF DYES ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FUELS INORGANIC CHEMISTRY LUBRICANTS LUBRICATING COMPOSITIONS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-METALLIC ELEMENTS PAINTS PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLISHES POLISHING COMPOSITIONS OTHER THAN FRENCH POLISH PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS SKI WAXES TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR RELEVANT APPARATUS TRANSPORTING USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Beschreibung
Zusammenfassung:	The present invention relates to a method for producing zeta negative single digit carboxylated nanodiamond dispersion. The method comprises adjusting pH of zeta negative carboxylated nanodiamond suspension to at least 7, and subjecting the pH adjusted suspension to beads milling. The present invention further relates to zeta negative single digit carboxylated nanodiamond dispersion comprising zeta negative single digit carboxylated nanodiamond particles and a liquid medium, wherein zeta potential of the zeta negative single digit carboxylated nanodiamond dispersion is over −37 mV measured at pH over 7, zeta negative single digit carboxylated nanodiamond particle concentration in the dispersion is over 2 wt-% and D90 average primary particle size distribution of the zeta negative single digit carboxylated nanodiamond particles is from 2 nm to 12 nm.