Spruehgefriergranulate mit verbesserter Homogenitaet der Eigenschaftsverteilung und Verfahren zu deren Herstellung

DE 10320609 A UPAB: 20050103 NOVELTY - Production of spray-frozen granules (I), having improved homogeneity of property distribution, involves spray-freezing starting material solutions and/or suspensions while maintaining identical freezing conditions throughout the whole volume, then transferring the spray-frozen product to a freeze-dryer and lyophilizing. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for new spray-frozen granules (I'), consisting of spherical whole granules with granule porosity at least 80%, individual granule strength less than 1 MPa, stiffness less than 1 mN/ micro m, specific identity loss energy less than 500 mJ/cm3, a degree of dispersion at least equivalent to that of the starting powder (measured under the same conditions) and properties such that the whole granules are no longer detectable when compacted to a shaped article under a pressure of ca. 10 MPa. USE - (I)/(I') are specifically derived from ceramic, metallic and/or polymeric material, carbon black and/or foodstuff starting materials, and especially for use as instant granules, inhalation granules or pressable granules (claimed). Typically (I)/(I') are useful in the high-grade or conventional ceramic, foodstuff, catalyst, pharmaceutical and chemical sectors. ADVANTAGE - (I)/(I') have good, homogeneously distributed properties, especially as regards redispersibility and pressability to finely divided solids