Abstract: Systems and methods provide a polyurethane foam. One method may obtainable the polyurethane foam by mechanical foaming with a starting mixture comprising a polyurethane dispersion, the polyurethane being composed of at least one polyisocyanate component and at least one polyol component, and at least one surfactant. The polyol component or at least one of the polyol components may comprise at least one comonomer having flame retardancy effect and containing two hydroxyl groups. The adhesive tapes produced therefrom may adhesively bond components in vehicles, aircraft or trains, or in electronic devices.