AQUEOUS POLYURETHANE DISPERSION DERIVED FROM TERTIARY ALKENYL GLYCIDYL ESTERS
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United States of America Patent
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Aug 27, 2015
app pub date -
Sep 3, 2013
filing date -
Sep 13, 2012
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Abstract
This invention relates to a Waterborne Polyurethane Dispersions (WPU) derived from the reaction products of tertiary alkyl glycidyl esters based hydroxyl terminal polyester polyols with polyisocyanates and chain extended with poly-functional amines and dispersed in water have shown the surprising inherent ability for self-coalescence. Furthermore the cured films have shown improved hardness and abrasion resistance over these benchmarks with a significant reduction in coalescing solvent needed to accomplish film formation.
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