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...
Patent
1988-09-02
1990-08-14
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 76, 528 85, 525452, 525459, 525467, C08G 1832, C08G 1838
Patent
active
049488627
ABSTRACT:
Modified poly(alkylene carbonate) polyahls comprising the residue of at least one polyahl, at least one modifier, poly(alkyleneoxy) units, poly(alkylene carbonate) units, and a plurality of active hydrogen end groups are disclosed. The modified polyahls have an average molecular weight higher than any known polyahls containing at least the same weight percent modifier and the same poly(alkyleneoxy) and poly(alkylene carbonate) residues. Also disclosed are isocyanate-functional prepolymer compositions of these modified poly(alkylene carbonate) polyahls, which contain the residue of at least one modified poly(alkylene carbonate) polyahl of this invention and excess organic polyisocyanate units. Urethane/urea polymers formed by the reactions of the isocyanate-functional prepolymers with polyahls are also disclosed. Also disclosed are urethane/urea polymers comprising the residue of at least one modified poly(alkylene carbonate) polyahl of this invention, the residue of a polyisocyanate and the residue of at least one other polyahl selected from the group consisting of polyamines and polyfunctional hydroxyl compounds. The novel compositions of this invention are useful in urethane/urea polymer applications such as foams, elastomers, plastics, adhesives, coatings and the like.
REFERENCES:
patent: 3133113 (1964-05-01), Malkemus
patent: 3248414 (1966-04-01), Stevens
patent: 3324070 (1967-06-01), Hostettler et al.
patent: 3379693 (1968-04-01), Hostettler et al.
patent: 3567763 (1971-03-01), Emmons
patent: 4105641 (1978-08-01), Buysch et al.
patent: 4108842 (1978-08-01), Konig et al.
patent: 4191705 (1980-03-01), Lindner et al.
patent: 4267120 (1981-05-01), Cuscurida et al.
patent: 4394491 (1983-07-01), Hoffman
patent: 4435527 (1984-03-01), Cuscurida
patent: 4476293 (1984-10-01), Robinson
patent: 4795810 (1989-01-01), Harris
W. Siefken, Justus Liebigs Annalen der Chemie, 562, 75-136.
Kight III John
Sridharan Anang
The Dow Chemical Company
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