Hydrophilic polyurethanes, preparation thereof and fiber...

Details Hydrophilic polyurethanes, preparation thereof and fiber... Hydrophilic polyurethanes, preparation thereof and fiber...

2005-06-28

2005-06-28

Gulakowski, Randy (Department: 1712)

Coating processes

With post-treatment of coating or coating material

Heating or drying

C427S541000, C427S177000, C427S178000, C523S402000, C528S073000

Reexamination Certificate

active

06911237

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.

REFERENCES:
patent: 4474906 (1984-10-01), Nakama et al.
patent: 4918119 (1990-04-01), Seltmann et al.
patent: 5034435 (1991-07-01), Squiller et al.
patent: 5298576 (1994-03-01), Sumida et al.
patent: 5686541 (1997-11-01), Wang et al.
patent: 10273515 (1998-10-01), None
Machine Translation, JP 10273515, Yoshida et al., Oct. 13, 1998.

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