| 摘要 |
<p>The invention relates to a method for producing composite bodies from moulded mineral bodies and layers of foamed polyurethane. The moulded mineral body can be coated with a foamable polyurethane composition consisting of a polyol mixture, water and/or carboxylic acids, catalysts, amines, foam stabilisers, wetting and dispersing agents, and a polyisocyanate, in a closed mould. Said mould must not be pre-heated; during the foaming process, the composition is only subjected to the inherent pressure produced during said process. In another form of embodiment, the foam body is produced separately and is then glued to the moulded mineral body.</p> |
