Abstract: New solid drug dispersions are described in which a drug is present in amorphous form and dispersed within the particles of an organic carrier selected from cross-linked polymers and/or complexing agents. These dispersions are obtainable by mixing the drug and the carrier and applying an oscillating electromagnetic field in the microwave region according to a specific heating cycle wherein the drug-carrier mixture is heated at a temperature higher than the melting point of the drug for at least 5 minutes.

Abstract: New solid drug dispersions are described in which the drug is present in amorphous form and massively dispersed (in bulk) inside the particles of an organic carrier selected from cross-linked polymers and/or a complexing agents. These dispersions are obtainable by mixing together the drug and the carrier and applying an oscillating electromagnetic field to the mixture, to a frequency belonging to the microwave region; the microwaves are applied according to a specific heating cycle wherein the drug-carrier mixture is heated at a temperature higher than the melting point of the drug for at least 5 minutes. With respect to the known techniques, the present invention allows to increase in the amount of drug incorporated into the carrier in amorphous form, and to increase the physical stability of the amorphous phase.

Abstract: The invention relates to a process for preparing microcapsules in a liquid vehicle, allowing to microencapsulate both water soluble and water insoluble substances, using either ionic or non-ionic systems, in which the membrane enclosing the core of the microcapsules is formed by a polymer selected from the group of the phthalates, and more particularly by hydroxypropylmethylcellulose phthalate.