Buffered silane emulsions having low volatile organic compounds when cured
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United States of America Patent
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Feb 5, 1991
Issued Date -
N/A
app pub date -
Aug 10, 1989
filing date -
May 2, 1988
priority date (Note) -
Expired
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Abstract
There are provided aqueous emulsions useful for rendering porous substrates water repellent having low volatile organic compound content when cured comprising effective amounts of (a) a hydrolyzable silane having a determinable pH-stable range, (b) an emulsifying agent having an HLB value of from 2 to 20, (c) a buffering compound to maintain the composition within the pH-stable range; and (d) water. Such buffered compositions are stable on long term storage and maintain high effective levels of active silane content even when they include biocides which may accelerate the hydrolysis of aqueous silane-containing compositions.
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