Non-aqueous poly(urethane-urea)

Details Non-aqueous poly(urethane-urea) Non-aqueous poly(urethane-urea)

1985-04-29

1986-05-20

Welsh, Maurice J.

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 61, 528 64, C08G 1810

Patent

active

045902542

ABSTRACT:
Disclosed herein is a poly(urethane-urea) which is prepared by reverse-addition of an isocyanate-terminated prepolymer to an organic medium containing an alcoholic solvent and a chain extender comprising at least two isocyanate-reactive active hydrogen groups consisting essentially of amino groups.

REFERENCES:
patent: 4001180 (1977-01-01), Doyle et al.
patent: 4089822 (1978-05-01), Vial et al.
patent: 4393186 (1983-07-01), Damico et al.
patent: 4412022 (1983-10-01), Hirai et al.
patent: 4546167 (1985-10-01), Chang

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