POLYACRYLIC ACID (SALT), POLYACRYLIC ACID (SALT)-BASED WATER-ABSORBING RESIN, AND PROCESS FOR PRODUCING SAME
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United States of America Patent
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Issued Date -
Feb 14, 2013
app pub date -
Apr 26, 2011
filing date -
Apr 26, 2010
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Abandoned
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Abstract
Disclosed are a polyacrylate (salt) and a polyacrylate (salt) water-absorbent resin containing a tracer which can be verified back to the manufacturing process of the water-absorbent resin when dealing with various problems with the water-absorbent resin which can occur from the manufacturing process of the water-resistant resin, during the use thereof by a consumer, up until the disposal thereof. The disclosed polyacrylate (salt) and the polyacrylate (salt) water-absorbent resin have a carbon stable isotope ratio (δ13C) of at least −20% when measured by accelerator mass spectrometry.
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