Hydroxy-functional polyethers containing urea, biuret, thiourea,

Details Hydroxy-functional polyethers containing urea, biuret, thiourea, Hydroxy-functional polyethers containing urea, biuret, thiourea,

1991-10-08

1993-12-21

Kight, III, John

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 60, 528 61, 528 64, 528 65, 528 68, 528 76, 528 77, 528 78, C08G 1810

Patent

active

052722449

ABSTRACT:
Described herein are modified polyahls comprising (a) a backbone portion containing at least one polyalkyleneoxy moiety and one or more internal urea, amide, biuret, thiourea, dithiobiuret, or thioamide moieties, (b) end groups selected from the group consisting of amino, hydroxy amide or hydroxyester amide, wherein at least one end group is hydroxy amide or hydroxyester amide, wherein each internal moiety is separated from each other and from each end group by at lit least one alkylene, cycloalkylene, aralkylene, arylene, or alkyleneoxy moiety with 4-20 carbon atoms, or at least one polyalkyleneoxy moiety containing from 2-50 alkyleneoxy units. Also described are urethane/urea prepolymers and polymers prepared therefrom.

REFERENCES:
patent: 4916201 (1990-04-01), Harris et al.
patent: 4959499 (1990-09-01), Harris

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