Composition and a method for controlling reaction pressures during the foaming process resulting in an easily flame retarded foam-in place insulation
AssigneesPatrick James. Crehan, Richard J. Fricke
InventorRichard B. Kennedy
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Abstract
A low reactive pressure flame-retardant polyurethane foam made by reacting together a polymeric isocyanate, a polyol, an aqueous solution of a carbohydrate, calcium acid phosphate, sodium aluminum sulfate, sodium bicarbonate, and a flame retardant. A blowing agent may be present.
Claims14
A low reactive pressure flame-retardant polyurethane foam made by reacting together a polymeric isocyanate, a conventional polyol, a surfactant, a blowing agent and an aqueous solution of a carbohydrate, calcium acid phosphate, sodium aluminum sulfate, sodium bicarbonate, and flame retardant.
A method for making a flame-retardant polyurethane foam comprising:
- a. dissolving a carbohydrate, calcium acid phosphate, sodium aluminum sulfate, sodium bicarbonate, surfactant, and a flame retardant selected from the group consisting of sodium chloride, calcium chloride, alkali metal borates, tri-cresyl phosphate, tris(2-chloroethyl phospate), tris(chloropropyl)phosphonate, O,O-diethyl-N,N-bis-(2-hydroxyethyl)aminomethyl phosphate, antimony oxide, alumina, and antimony oxychloride, to form an aqueous solution;
- b. mixing the aqueous solution with a polyether polyol;
- c. adding to the polyol-aqueous solution mixture a polymer isocyanate and mixing.
- d. allowing the mixture to foam.
Dependencies are inferred from the claim text.