NOVEL THICKENING POLYMER IN THE FORM OF A POWDER
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United States of America Patent
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Issued Date -
Apr 19, 2012
app pub date -
Mar 30, 2010
filing date -
Mar 31, 2009
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Abandoned
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Abstract
Method for preparing an anionic polyelectrolyte including up to 95 mol % of monomer units from 2-methyl 2-[(1-oxo 2-propenyl) amino] 1-propanesulfonic acid that is totally salified in the form of sodium salt, up to 90 mol % of at least one neutral monomer, and optionally up to 10 mol % of at least one monomer of formula (I):
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