PROCESS FOR PRODUCING CARBON BLACKS WITH REDUCED CONTENT OF OXY-POLYCYCLIC AROMATIC HYDROCARBONS (OXY-PAHS) UTILIZING SUPERCRITICAL FLUID EXTRACTION

It is provided a process for producing a purified carbon black with a reduced content of oxy-polycyclic aromatic hydrocarbons, the process comprising: (a) providing a carbon black comprising an initial content of oxy-polycyclic aromatic hydrocarbons of 1 ppm or more, (b) treating the carbon black co...

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Bibliographische Detailangaben
Hauptverfasser:	WIDJAJA, Andreas, SCHINKEL, Arndt-Peter, WAIDMANN, Guido, KRAUSS, Kai, GLÄSEL, Jan, DROCHNER, Alfons, DETERS, David, ETZOLD, Bastian
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES BASIC ELECTRIC ELEMENTS CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES ELECTRICITY FILLING PASTES INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLISHES PREPARATION OF CARBON BLACK PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SEPARATION THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	It is provided a process for producing a purified carbon black with a reduced content of oxy-polycyclic aromatic hydrocarbons, the process comprising: (a) providing a carbon black comprising an initial content of oxy-polycyclic aromatic hydrocarbons of 1 ppm or more, (b) treating the carbon black comprising an initial content of oxy-polycyclic aromatic hydrocarbons with an extraction agent comprising carbon dioxide in a supercritical state to extract at least a portion of the oxy-polycyclic aromatic hydrocarbons from the carbon black, and (c) removing the extraction agent comprising the extracted oxy-polycyclic aromatic hydrocarbons from the carbon black to obtain a purified carbon black with a lower content of oxy-polycyclic aromatic hydrocarbons than the initial content of oxy- polycyclic aromatic hydrocarbons. It is furthermore provided a carbon black obtained through said production process and articles made therefrom. La présente invention concerne un procédé de production d'un noir de carbone purifié à teneur réduite en hydrocarbures aromatiques oxy-polycycliques, le procédé comprenant les étapes suivantes : (a) mise à disposition d'un noir de carbone comprenant une teneur initiale en hydrocarbures aromatiques oxy-polycycliques de 1 ppm ou plus ; (b) traitement du noir de carbone comprenant une teneur initiale en hydrocarbures aromatiques oxy-polycycliques avec un agent d'extraction comprenant du dioxyde de carbone à l'état supercritique pour extraire au moins une partie des hydrocarbures aromatiques oxy-polycycliques du noir de carbone ; et (c) éliminer l'agent d'extraction comprenant les hydrocarbures aromatiques oxy-polycycliques extraits du noir de carbone pour obtenir un noir de carbone purifié dont la teneur en hydrocarbures aromatiques oxy-polycycliques est inférieure à la teneur initiale en hydrocarbures aromatiques oxy-polycycliques. L'invention concerne en outre un noir de carbone obtenu au moyen dudit procédé de production et des articles fabriqués à partir de celui-ci.