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Sprayable seal of building constructions based on coagulable polyurethane dispersions
Sprayable seal of building constructions based on coagulable polyurethane dispersions
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机译:基于可凝结聚氨酯分散体的建筑结构的可喷涂密封
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摘要
Sprayable seal for waterproofing building works, contains (A) a dispersion of polyurethane (PU) and/or PU-urea based mainly on a polyether structure, with a Tg of not above 30 degrees C, a solids content of at least 40% and an emulsifier system integrated into the polymer, and (B) a coagulant-containing component which counteracts the emulsifier system in (A), resulting in precipitation of the dispersion particles with formation of a film. Also claimed is (i) a process for the production of a watertight membrane by mixing (A) and (B) in a nozzle or directly outside the nozzle(s) of a spray machine and applying the resulting mixture to the substrate, and (ii) a process for the production of the polymer in dispersion (A).
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