Water absorbing agent and production method thereof
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United States of America Patent
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Sep 30, 2014
Grant Date -
Feb 7, 2008
app pub date -
Apr 28, 2005
filing date -
May 7, 2004
priority date (Note) -
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Abstract
A water absorbing agent and a method for producing the water absorbing agent are disclosed. Water absorbent resin particles having an internal cross-linked structure obtained by polymerizing a water-soluble unsaturated monomer, organic acid, and water-soluble multivalent metal salt are mixed, so that it is possible to provide a water absorbing agent which suppresses permeation of metal components into the water absorbent resin particles and enables the metal components to evenly adhere to an entire surface of the water absorbent resin in a dot manner.
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