Process for patching canals and ditches with a non-sagging polyurethane composition
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United States of America Patent
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-
Sep 7, 2004
Grant Date -
Nov 28, 2002
app pub date -
Mar 15, 2001
filing date -
Mar 15, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Seams are sealed and surface defects are repaired in a polyurethane/geotextile composite applied over concrete, an earthen canal or a ditch with a non-sagging polyurethane composition. This non-sagging polyurethane composition is a reaction product of a polyisocyanate, a high molecular weight polyhydroxyl compound, and a compound containing at least two amino groups. A low molecular weight diol or triol, a catalyst and a filler are optionally included in the polyurethane-forming reaction mixture.
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Cited Art Landscape
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