Nonaqueous method of dispersing a water soluble polymer
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United States of America Patent
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Oct 18, 2016
Grant Date -
Nov 27, 2014
app pub date -
Dec 11, 2012
filing date -
Dec 22, 2011
priority date (Note) -
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Abstract
Described are methods of dispersing and hydrating a water soluble polymer, comprising forming a nonaqueous slurry of polypropylene glycol, water soluble polymer, and hydrophobically modified ethoxylated urethane, provided that the slurry contains less than five percent water; and then contacting the nonaqueous slurry with water to disperse and hydrate the water soluble polymer.
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