Process for water-repellent impregnation of masonry
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United States of America Patent
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Oct 5, 1993
Grant Date -
N/A
app pub date -
Jun 1, 1992
filing date -
Jun 13, 1991
priority date (Note) -
Expired
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Abstract
A process for rendering masonry water-repellent which comprises treating masonry which is alkaline, with a highly dispersed water-diluted impregnating composition which comprises (A1) an organoalkoxysilane and/or (A2) an organosiloxane containing alkoxy groups and (B) a water-soluble organic or inorganic acid salt of an organopolysiloxane, which in addition to other organosiloxane units contains siloxane units which carry monovalent SiC-bonded radicals containing basic nitrogen in amounts of at least 0.5% by weight, based on the weight of the organopolysiloxane. The treated masonry is particularly resistant to rising dampness.
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