ABSORBENT RESIN PARTICLES FOR WATER-STOPPING TAPE, AND WATER-STOPPING TAPE CONTAINING SAME
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United States of America Patent
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Issued Date -
Aug 30, 2012
app pub date -
Oct 12, 2010
filing date -
Oct 30, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An object of the present invention is to provide absorbent resin particles for a water-stopping tape which are superior in absorption rate even when their average particle size is smaller or when their particle size distribution is wider. The present invention relates to absorbent resin particles for a water-stopping tape comprising a crosslinked polymer (A1) comprising a water-soluble vinyl monomer (a1) and/or a hydrolyzable vinyl monomer (a2) and a crosslinking agent (b) as essential constitutional units, wherein a hydrophobic substance (C) is present inside the absorbent resin particles in an amount of from 0.01 to 10.0% by weight relative to the weight of (A1) and (C) is present on the surface of the absorbent resin particles in an amount of from 0.001 to 1.0% by weight relative to the weight of (A1).
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