Aqueous resin preparations and a process for stabilizing rock and plugging cavities
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United States of America Patent
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Apr 6, 1993
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Nov 6, 1991
filing date -
Mar 11, 1989
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Abstract
The invention relates to aqueous preparations of acid-catalyzed melamine resins and/or urea-formaldehyde condensates which contain an addition of zeolite NaA and/or hydroxysodalite to increase their usefulness. The preparations in question are particularly suitable for use in the stabilization of rock and/or plugging of cavities, for example in tunneling and mining. Accordingly, the invention also relates to a process for stabilizing rock, for example in tunneling and mining, by injection of corresponding preparations together with an acidic catalyst.
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