Method for preparing a dispersion of metallic particles, colloidal solution, film or solid film (sheet) obtained

The invention relates to a method for preparing a dispersion of metallic particles in a matrix. This method consists in dissolving an organometallic precursor and a cellulose matrix in a common organic solvent and in causing a reducing gas to act on the solution with a view to decomposing the precur...

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Bibliographische Detailangaben
Hauptverfasser:	QUEAU RENE, DUTEIL ANNE, CHAUDRET BRUNO
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CASTING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POWDER METALLURGY THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	The invention relates to a method for preparing a dispersion of metallic particles in a matrix. This method consists in dissolving an organometallic precursor and a cellulose matrix in a common organic solvent and in causing a reducing gas to act on the solution with a view to decomposing the precursor into metallic particles. The method of the invention makes it possible to manufacture metallic dispersions of controlled size (consisting of particles of pure metal dispersed in the matrix) which are soluble in organic solvents and stable therein, it being possible for these dispersions to have the form of a colloidal solution or, after evaporation, the form of a film or solid film. L'invention concerne un procédé de préparation d'une dispersion de particules métalliques dans une matrice. Ce procédé consiste à mettre en solution un précurseur organo-métallique et une matrice cellulosique dans un solvant organique commun et à faire agir sur la solution un gaz réducteur en vue de décomposer le précurseur en particules métalliques. Le procédé de l'invention permet de fabriquer des dispersions métalliques de taille contrôlée (constituées de particules de métal pur dispersées dans la matrice) qui soient solubles dans les solvants organiques et stables dans ceux-ci, ces dispersions pouvant se présenter sous forme d'une solution colloïdale ou, après évaporation, sous forme de film ou feuil solide.