Liquid-applied waterproofing membrane comprising oxazolidine and aldimine
US10415250B2 · kind B2 · utility
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9References
18Claims
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Key dates
| Filing date | Jan 21, 2014 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Feb 27, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2419/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention describes a one-part moisture-curing liquid-applied waterproofing membrane including a polyurethane polymer and both an aldimine and an oxazolidine as blocked amine hardeners in a specific ratio range. The membrane has a low odor, 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 can be suitable for roofing applications, possessing high strength, high elongation and good durability under outdoor weathering conditions in a broad temperature range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.