US 10,870,984 B2 · Spray foams containing non-halogenated fire retardants

Abstract

A spray foam formulation used to form a spray foam insulation layer in a wall structure is described. The formulation may include the reaction product of a polyisocyanate compound and a polyol compound; a fire retardant chosen from at least one of a non-halogenated fire retardant; and a reactive halogen-containing fire retardant, and a carbohydrate. The spray foam insulation layer has an insulative R value of 3.0 to 7.2 per inch, and a density of between about 0.3 to about 4.5 pcf. Further, spray foam insulation made from the spray foam formulation may have fire retardant characteristics that are equivalent to or better than a similar spray insulation foam insulation using non-reactive halogenated fire retardants such as tris(1-chloro-2-propyl)phosphate (TCPP).

Claims23

Dependent claims

A spray foam formulation used in an insulation layer in a wall structure, the spray foam formulation comprising:

a reaction product of a polyisocyanate compound and a polyol compound, wherein the polyol compound comprises at least one of a polyester polyol, a polyether polyol, or a Manich polyol;
a fire retardant comprising a reactive halogen-containing fire retardant;
10 wt. % to 26 wt. % water based on a total weight of the spray foam formulation;
and
an unreacted carbohydrate,
wherein the insulation layer has an insulative R value of 3.0 to 7.2 per inch, and a density of between about 0.3 to about 4.5 pcf, and
wherein the insulation layer exhibits an Appendix X modified NFPA 286 standard and an ASTM E-84 performance equivalent with or better than an identical insulation layer except for having a non-reactive halogenated fire retardant tris(1-chloro-2-propyl)phosphate (TCPP).

4 more elements

Dependencies are inferred from the claim text.

Spray foams containing non-halogenated fire retardants

Life of this patent

Spray foams containing non-halogenated fire retardants

Life of this patent

Abstract

Claims23