| 摘要 |
The use of aqueous isocyanate-free polyurethane dispersions with a solids content of >/= 30 wt. % and a solvent content of </= 10 wt. % in formulations for crack sealing coating systems is disclosed. Said use may be in a) primer, floating screed, floor coatings, spray coatings and/or sealants, on, preferably, primed building surfaces, b) roof coatings or paints and c) sealing of open-cast or subterranean mines. According to the invention, the disclosed polyurethane dispersions are not just more environmentally-friendly and easier to use, but also give a partly improved product property to the corresponding crack sealing coating systems, such as, for example, mechanical properties (tensile strength, stretching under tension, tear elongation), UV resistance and colour stability.
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| 申请人 |
CONICA TECHNIK AG, SCHAFFHAUSEN;SKW BAUCHEMIE GMBH |
发明人 |
HAEBERLE, HANS;TEMME, WERNER;BERGS, RALPH;STEIDL, NORBERT;MAIER, ALOIS |
