Aqueous dispersions of fluorinated polyurethanes and their use for textile coatings
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United States of America Patent
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Jan 8, 1991
Issued Date -
N/A
app pub date -
Jan 22, 1990
filing date -
Dec 30, 1986
priority date (Note) -
Expired
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Abstract
Aqueous dispersions of fluorinated polyurethanes obtained by the reaction of an organic diisocyanate with a mixture of diols containing ionizable groups and macroglycols comprising polyols and at least 1% by weight of one or more hydroxy- and/or carboxy-capped fluoropolyethers. Said fluorinated polyurethanes are salified, to transform the ionizable groups into hydrophilic cations and/or anions, and are then dispersed in water to be used in textile coatings.
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