
US Patent No: 4,273,813
Number of patents in Portfolio can not be more than 2000
Method of providing waterproof coating for masonry walls
Stats
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Jun 16, 1981
Issued date -
May 19, 1980
filing date -
06/150,867
serial no -
Expired
status
Importance
Abstract
A simplified method of waterproofing masonry walls such as basement walls subjected to water from the outer surface by coating the inner surface with an anionic silicone emulsion that dries to produce an elastomeric film is disclosed. The silicone emulsion consists essentially of an anionically stabilized hydroxyl endblocked polydiorganosiloxane, amorphous silica, and an organic tin salt, the emulsion having a pH of 9 or greater. The emulsion coating when dried provides an elastomeric film that bonds to the surface with sufficient force to resist the pressure of any water that may diffuse through the wall from the outer surface. The method of this invention provides a waterproof coating that also resists the effects of cracks in the substrate, temperature extremes, molds, fungus, or mildew, as well as possessing a long useful life.
First Claim
Related Publications
International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,221,688 Silicone emulsion which provides an elastomeric product and methods for preparation | 82 | 1978 | |
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| 4,209,432 Process for rendering building materials hydrophobic | 39 | 1978 | |