Method of providing a foam barrier between a substrate and the atmosphere and compositions therefor
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United States of America Patent
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Mar 17, 1992
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N/A
app pub date -
Sep 29, 1989
filing date -
Sep 29, 1989
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Expired
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Abstract
Aqueous thixotropic foam-producing chemical compositions are presented which are comprised of an anionic sulfonate or sulfate surfactant, a fatty acid having 10-30 carbon atoms, an acrylic-based thixotropic thickener, an acrylic acid polymer processing aide and a base present in a concentration sufficiently high to neutralize all of the acid components of the mixture and adjust the pH to above 7.5. The thixotropic foam-producing compositions are useful for producing thixotropic foams which have the ability to resist slumping on sloped surfaces. Also disclosed is a process for mixing highly viscous, low density chemical foaming compositions with water without causing foaming of the resulting mixture.
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