Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1994-03-07
1996-01-02
Wu, Shean
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
560158, 560337, 560357, 560358, 252 88, 252 89, C07C26700, C07C26502, D06M 15576
Patent
active
054810272
ABSTRACT:
Urea linkage-containing alkoxypolyoxyalkylene fluorocarbamates prepared by reacting (a) at least one polyisocyanate which contains at least three isocyanate groups with (b) at least one fluorochemical reagent which contains one functional group which has at least one H and at least two C atoms each of which contains at least two F atoms, (c) at least one hydrophilic, water-solvatable reagent which contains a single functional group which has at least one reactive H, (d) at least one reagent which contains one reactive H and which on reaction with an isocyanate group yields functionality which has abeyant chemical reactivity with fibrous substrates and (e) then with water, reactants (b), (c) and (d) being reacted with 55% to 95% of said isocyanate groups, and water with the remainder.
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E. I. Du Pont de Nemours and Company
Wu Shean
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