Water soluble polymer powder formulation having improved dispersing properties
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United States of America Patent
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Apr 26, 2016
Grant Date -
Oct 4, 2012
app pub date -
Mar 5, 2012
filing date -
Mar 7, 2011
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Abstract
The present invention relates generally to water soluble polymer powder formulations, and more particularly, to a cellulose ether formulation which in powder form is suitable for direct addition to water-based systems to produce smooth, lump free solutions. The cellulose ethers are crosslinked with an aldehyde crosslinker and include a dry weak acid which slows hydrolysis of the hermiacetal linkage formed by the crosslinker. The selected acid does not adversely affect solubility stability.
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