Aqueous dispersions of polyurethane-addition polymer hybrid particles especially for use in coating compositions
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United States of America Patent
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May 19, 2009
Grant Date -
Nov 17, 2005
app pub date -
Jun 9, 2005
filing date -
Dec 17, 2002
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Expired
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Abstract
An aqueous dispersion of polyurethane-addition polymer hybrid particles, where the isocyanates used to make the polyurethane polymer portion of the particles comprise a mixture of aromatic polyisocyanate and aliphatic polyisocyanate wherein the aromatic isocyanate is free of sterically hindered isocyanate moieties. The dispersions are suitable for use in coatings, including varnishes, paints, inks and adhesives.
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