Organic compounds -- part of the class 532-570 series – Organic compounds – Carbonate esters
Patent
1987-02-24
1989-08-29
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbonate esters
521159, 525453, 528370, 558260, 558262, 558265, 558266, 558268, 558269, C07C 6996, C08G 6362
Patent
active
048619094
ABSTRACT:
Isocyanate-modified poly(alkylene carbonate) polyahls comprising the residue of at least one polyahl, at least one isocyanate modifier, poly(alkyleneoxy) units, poly(alkylene carbonate) units, and a plurality of active hydrogen end groups are disclosed. Also disclosed are isocyanate-functional prepolymer compositions of these isocyanate-modifed poly(alkylene carbonate) polyahls, which contain the residue of at least one isocyanate-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 isocyanate-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.
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Clarke Vera C.
Lone Werren B.
The Dow Chemical Company
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