LIQUID-APPLIED WATERPROOFING MEMBRANE FOR ROOFS
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United States of America Patent
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Issued Date -
Dec 10, 2015
app pub date -
Jan 21, 2014
filing date -
Jan 22, 2013
priority date (Note) -
Abandoned
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Abstract
The present invention describes a one-part moisture-curing liquid applied waterproofing membrane comprising an MDI-based polyurethane polymer and two different aldimines as blocked amine hardeners in a specific ratio range. The membrane has a low odour, a long shelf life stability, a low viscosity at low solvent content, a sufficiently long open time to allow hand application and cures fast to a solid elastic material. The liquid-applied waterproofing membrane is particularly suitable for roofing applications, possessing high strength, high elongation and good durability under outdoor wheathering conditions in a broad temperature range.
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