POWDERY HYDROPHILIC POLYMER, METHOD FOR PRODUCING THE SAME, AND FLOCCULATING AGENT USING SAME
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United States of America Patent
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Issued Date -
Aug 28, 2014
app pub date -
Jan 13, 2012
filing date -
Aug 29, 2011
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Abandoned
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Abstract
Provided is a powdery hydrophilic polymer by aggregating a hydrophilic polymer comprising a water-in-oil emulsion in a liquid form by emulsion breaking and granulating the aggregate, followed by drying. As an emulsion breaker, ionic surfactants, nonionic surfactants having an HLB value of 11 to 20, or oil-soluble polymer compounds having a hydrophilic group and a hydrophobic group can be used. The powdery hydrophilic polymer obtained by this method exhibits excellent effects as a flocculating agent.
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