Hydrophobically associating copolymers
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United States of America Patent
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Oct 20, 2015
Grant Date -
Oct 23, 2014
app pub date -
Jul 3, 2014
filing date -
May 20, 2009
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Abstract
Water-soluble, hydrophobically associating copolymers which comprise new types of hydrophobically associating monomers. The monomers comprise an ethylenically unsaturated group and a polyether group with block structure comprising a hydrophilic polyalkylene oxide block which consists essentially of ethylene oxide groups, and a terminal, hydrophobic polyalkylene oxide block which consists of alkylene oxides with at least 4, preferably at least 5 carbon atoms.
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