Aqueous dispersions of carboxylated cellulose esters, and methods of making them
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United States of America Patent
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May 30, 2006
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app pub date -
Mar 11, 2004
filing date -
Mar 11, 2004
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Abstract
Aqueous dispersions of carboxylated cellulose esters are disclosed having a low organic solvent content. These dispersions can be prepared using a volatile hydrophilic organic solvent and a coupling organic solvent having a lower volatility, the volatile hydrophilic solvent being substantially stripped off during preparation to obtain a dispersion useful in a variety of coating compositions, providing satisfactory performance in metallic flake control, flow and leveling properties, and defect reduction.
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