The invention relates to a flexible watertight polyurethane foam obtained by reacting a polyol component comprising at least one hydrophobic polyol and a polyisocyanate component in the presence of a foaming agent. The invention is characterized in that it has a compression strength of less than or equal to 12kPa for 50 % compression. The density of the inventive foam is advantageously less than or equal to 150kg/m2, preferably 60kg/m2. The foam can be obtained by method for the production of couched foam or by moulding. The inventive foam can be used as a watertight joint.
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机译：本发明涉及一种柔性的不透水性聚氨酯泡沫，其通过在发泡剂的存在下使包含至少一种疏水性多元醇的多元醇组分与多异氰酸酯组分反应而获得。本发明的特征在于，对于50％的压缩率，其压缩强度小于或等于12kPa。本发明泡沫的密度有利地小于或等于150kg / m 2，优选为60kg / m 2。所述泡沫可以通过用于生产榻榻米泡沫的方法或通过模制获得。本发明的泡沫可用作防水接头。
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