Polyol compositions and rigid polyisocyanurate foams prepared therefrom
OwnerMartijn M. Witteveen, Andrei K. Gantchev +2inventors
InventorsMartijn M. Witteveen, Andrei K. Gantchev, Henri J.M. Gruenbauer, Ronald Van Den Bosch
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Abstract
A polyol composition comprising a high concentration of ethylene oxide having a functionality of from about 2 to about 8, preferably 2; a polyisocyanurate composition having an isocyanate index of from about 180 to about 450 and comprising the reaction product of a polyisocyanate and the polyol composition; a rigid polyisocyanurate foam comprising the polyisocyanurate composition; and a process for making a polyisocyanurate foam which comprises reacting a polyisocyanate with the polyol composition in the presence of a trimerization catalyst.
Claims18
A polyol composition comprising
- (a) from about 15 to about 70 percent by weight of a first polyol comprising an ethylene oxide polyol having a functionality of from about 2 to about 8 and a molecular weight of from about 350 to 800,
- (b) from about 5 to about 70 percent by weight of at least one second polyol selected from aliphatic, cycloaliphatic, aromatic and heterocyclic polyols;
- and
- (c) from 0 to about 80 percent by weight of a polyester polyol, if there is only one second polyol.
A polyisocyanurate composition having an isocyanate index of from about 180 to about 450 and comprising the reaction product of a polyisocyanate and a polyol composition comprising a high concentration of ethylene oxide having a functionality of from about 2 to about 8.
Dependencies are inferred from the claim text.