Abstract: The invention relates to a process for producing polyurethane foams for wound management wherein a composition containing a polyurethane dispersion and inorganic, cationic coagulants is frothed and dried.

Abstract: The invention relates to a process for producing polyurethane foams for wound management. These polyurethane wound dressing foams are prepared by a process comprising frothing and drying of a foam foaming composition, which comprises a polyurethane dispersion and specific coagulants.

Abstract: The invention relates to novel microporous coatings and to a process for the production of microporous coatings. A composition comprising an aqueous, anionically hydrophilised polyurethane dispersion (I) and a cationic coagulant (II) is foamed and dried to provide the microporous coating.

Abstract: The invention relates to a formulation having a plurality of phases containing active ingredients. Said formulation is characterised in that: it contains a first, innermost, finely distributed phase (I) consisting of active ingredients or an active ingredient solution, preferably some of the phase particles being surrounded by a barrier sheath (M); the formulation has a second, intermediate phase (II) that serves as a dispersant for the first, inner phase (I) and can also be dissolved in the active ingredient; and the formulation has a third, outer phase (III) that serves as a dispersant for the second intermediate phase and can, in turn, be dissolved in the active ingredient and/or can be in the form of solid particles that can, in turn, be surrounded by a barrier sheath. In this way, a plurality of biological active ingredients can be produced in the different phases in different concentrations and with a respectively controlled release rate in a single formulation.