Coated water-swellable material comprising hydrogel forming polymers
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United States of America Patent
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Sep 14, 2010
Grant Date -
Jul 9, 2009
app pub date -
Mar 17, 2009
filing date -
Aug 6, 2003
priority date (Note) -
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Abstract
This invention is directed to coated water-swellable materials, typically solid, particulate, water-swellable materials, i.e. materials that comprise hydrogel-forming polymers, whereof at least a part is coated with a coating, which substantially does not break when the polymers swell, as set out in the method herein. Said coating is present at a level of at least 1% by weight of the water-swellable material.The coating comprises preferably an elastomeric polymeric material. The invention also relates products, e.g., disposable absorbent articles, comprising such coated water-swellable material.
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