Polymeric compositions and their production and uses
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United States of America Patent
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Feb 24, 2009
Grant Date -
May 25, 2006
app pub date -
Jul 31, 2003
filing date -
Aug 2, 2002
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Abstract
A clear personal care or other aqueous gel is formed from dry polymer particles which are free of materials which render the gel cloudy and which are made by reverse phase emulsion polymerisation. The polymerisation process involves distilling water from the emulsion in the presence of sufficient non-aqueous liquid to prevent breakage of the emulsion and then washing the polymer particles with isopropanol or other suitable solvent and evaporating the solvent.
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