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US 12,344,700 B2Granted
Storage stable HFO- or HCFO-containing polyol compositions for making flame-resistant rigid polyurethane foams
AssigneeDow Global Technologies LLC
InventorsPaolo Golini, Berrin Degirmenci
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Abstract
Formulated polyol compositions include a non-halogenated polyol, a halogenated polyol, a phosphorus-containing flame retardant, an HFO and/or HCFO blowing agent and certain urethane catalysts. The compositions exhibit excellent storage stability. Foams made from the formulated polyol compositions have unexpectedly improved fire performance, as indicated by certain fire tests.
Claims4
A formulated polyol composition comprising:
- a) at least one non-halogenated polyol having a hydroxyl functionality of 2 to 8 and a hydroxyl number of 200 to 500;
- b) at least one brominated polyol;
- c) at least one phosphorus-containing flame retardant;
- d) at least one HFO and/or HCFO blowing agent;
- e) at least one foam-stabilizing surfactant and
- f) a urethane catalyst consisting of a dialkylimidazole compound and or or more of 2,2′-dimorpholinodiethylether and N,N-dimethylcyclohexylamine.
3 more elements
Dependencies are inferred from the claim text.