Poly(ureaurethane)s, articles and coatings prepared therefrom and methods of making the same
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United States of America Patent
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Oct 14, 2014
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Dec 14, 2006
filing date -
Sep 1, 2004
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Abstract
The present invention provides poly(ureaurethane)s including a reaction product of components including: (a) at least one isocyanate functional urea prepolymer including a reaction product of (1) at least one polyisocyanate having at least three isocyanate functional groups selected from the group consisting of polyisocyanate trimers and branched polyisocyanates; and (2) water; and (b) at least one branched polyol having 4 to 18 carbon atoms and at least 3 hydroxyl groups, wherein the branched polyol is selected from the group consisting of glycerol, tetramethylolmethane, trimethylolethane, trimethylolpropane, erythritol, pentaerythritol, dipentaerythritol, tripentaerythritol, sorbitan, alkoxylated derivatives thereof and mixtures thereof, wherein the equivalent ratio of NCO:water ranges from about 10:1 to about 2:1; compositions, coatings and articles made therefrom and methods of making the same.
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