Hydrophilic polyurethane impregnated rubber for sealing water leaks
US6541106B1 · kind B1 · utility
24Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2000 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | Sep 12, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249958
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A material provided for sealing leaks in water conveyance systems includes a porous hydrophilic rubber impregnated with a water reactive polyurethane resin. When the material comes into contact with water, the rubber and polyurethane swell and this results in increased adhesion and improved sealing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.