METHOD FOR IMPREGNATING A SUPPORT MATRIX WITH SOLID AND/OR LIQUID COMPOUNDS USING COMPRESSED GASES, AND MATERIALS IMPREGNATED IN THIS MANNER

Verfahren zum Imprägnieren einer Trägermatrix mit festen und/oder flüssigen Verbindungen mit Hilfe einen komprimierter Gas(-gemisch) bei Gasdichten zwischen 0,15 und 1,3 kg/l unter mindestens zwei unsymmetrisch verlaufenden Druckwechselabfolgen (Pulsationen). Das Verfahren zeichnet sich dadurch aus, dass sowohl eine Veilzahl an Imprägnierstoffen wie beispielsweise biologisch aktive Verbindungen, technische Stoffe oder metallorganische Verbindungen, als auch Träger-Matrices mit biologischem Ursprung sowie organische oder anorganische Stoffe eingesetzt werden können, die alle grosse und/oder schwer zugängliche innere Oberflächen aufweisen. The invention relates to a method for impregnating a support matrix with solid and/or liquid compounds using compressed gases, which is substantially characterized in that the solid and/or liquid compound(s) (impregnating substance) and the insoluble support matrix are contacted with a compressed gas or a compressed gas mixture at gas densities ranging from 0.15 to 1.3 kg/l and at least two unsymmetrical pressure changes (pulsations) in such a manner that the respective interval until the pressure maximum is reached is longer per individual pulsation of a duration of between 5 s and 60 min than the interval until the pressure is reduced to its minimum. The absolute pressure minimum is determined by the minimum dissolving capacity of the compressed gas or compressed gas mixture for the impregnating substances. The method is further characterized in that both a multitude of impregnating substances such as biologically active compounds, technical materials or metal-organic compounds, and support matrices of biological origin as well as organic or inorganic substances can be used that have large inner surfaces and/or inner surfaces that are difficult to access. The inventive method is preferably carried out using compressed carbon dioxide, propane, butane, ethane or ammonia and can be used to treat untreated support material or already precoated materials. The impregnated materials obtained are characterized by inner surfaces that are fairly homogeneously coated with the impregnating substances and that are mainly suitable for use in the pharmaceutical, agrochemical, cosmetic and technical industry. Procédé d'imprégnation d'une matrice de support avec des composés solides et / ou liquides à l'aide de gaz comprimés, caractérisé pour l'essentiel en ce que le ou les composés solides et / ou liquides (substance d'imprégnation) et