Water-dispersable polyurethanes

Details Water-dispersable polyurethanes Water-dispersable polyurethanes

1996-09-23

1998-02-03

Gorr, Rachel

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 71, 528 76, 25218222, 524873, 524874, C08G 1848

Patent

active

057145610

ABSTRACT:
Water-dispersible polyurethane prepolymers comprising one or more organic diisocyanates; a difunctional compound having a molecular weight of from about 250 to about 10,000 which is difunctionally reactive with the organic diisocyanate and which is free of side chain polyoxyalkylene units; and a dispersion diol which is difunctionally reactive with the organic diisocyanate and which contains side chain polyoxyalkylene units. Methods of preparation of the prepolymers and their use in aqueous polyurethane dispersions are also described.

REFERENCES:
patent: 3294724 (1966-12-01), Axelrood
patent: 3412054 (1968-11-01), Milligan
patent: 3479310 (1969-11-01), Dieterich
patent: 3905929 (1975-09-01), Noll
patent: 4092286 (1978-05-01), Noll
patent: 4237264 (1980-12-01), Noll
patent: 4764553 (1988-08-01), Masbach et al.

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