Hydrophilic polyurethanes, preparation thereof and fiber sizes containing the same
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United States of America Patent
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Jun 28, 2005
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N/A
app pub date -
Jul 3, 2002
filing date -
Jul 5, 2001
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Abstract
Water-soluble polyurethanes prepared by reacting a polyisocyanate and a polyalkylene oxide polyol at a molar ratio sufficient to form an isocyanate-terminated polymer, and reacting the isocyanate-terminated polymer with an epoxy alcohol to form a water-soluble, epoxy-terminated polyurethane, are disclosed. Also disclosed are aqueous fiber sizing compositions including the water-soluble polyurethanes described.
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