HIGH-GLOSS POLYURETHANE COATINGS PREPARED FROM ALLOPHANATE/POLYISOCYANATE HARDENER COMPOSITIONS
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United States of America Patent
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Issued Date -
Jul 1, 2010
app pub date -
Sep 21, 2007
filing date -
Sep 22, 2006
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Abandoned
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Abstract
Hydrophilic hardener compositions include at least one hydrophobic polyisocyanate, the hydrophobic polyisocyanate containing one or more allophanate functional groups, and the allophanate functional groups being present in the hardener compositions in an amount at least equal to 6 mol % relative to the total number of moles of isocyanate monomers converted in the preparation of the hardener composition, and are useful for the preparation in aqueous phase of high-gloss polyurethane coating formulations.
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