Use of aqueous polyurethane dispersions in formulations for crack sealing coating systems
First Claim
1. Use of aqueous, isocyanate-free polyurethane dispersions with a solids content of ≧
- 30% by weight and a solvent content of ≦
10% by weight in formulations for crack-sealing coating systems, which are selected from;
a) primer, floating screed, cover layers, spray coatings and/or sealings on preferably primed building surfaces, b) roof coatings or paints, and c) sealings of building structures in overground and underground construction.
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Accused Products
Abstract
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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Citations
19 Claims
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1. Use of aqueous, isocyanate-free polyurethane dispersions with a solids content of ≧
- 30% by weight and a solvent content of ≦
10% by weight in formulations for crack-sealing coating systems, which are selected from;
a) primer, floating screed, cover layers, spray coatings and/or sealings on preferably primed building surfaces, b) roof coatings or paints, and c) sealings of building structures in overground and underground construction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
- 30% by weight and a solvent content of ≦
Specification