Fire resistant foam composition and method
OwnerWalter Dan Stogner, William T. Frazier +2inventors
InventorsWalter Dan Stogner, William T. Frazier, Mack L. Knotts, Sean K. White
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Abstract
In one embodiment, ground mineral wool is added to conventional polyurethane composition A or B to improve fire or flame resistant properties. In a second embodiment, a larger percentage of ground mineral wool is used in combination with a higher water concentration in order to substantially reduce the hydrocarbon content of the resulting foam. In a third embodiment, a foam composition is substantially re-formulated to reduce polyol concentration. Preliminary testing has suggested that it is possible to create an effective foam-like insulation without requiring the “foam” components to have a high polyol concentration.
Claims19
An additive composition for improving flame or fire retardant properties of polyurethane foam, the additive composition comprising
- a char-promoting component comprising
- a first ceramic, glass, mineral, or slag material having a particle size in the range of 1 to 6730 microns.
The additive composition of claim 6 wherein
- the flame retardant agent is an endothermic decomposition agent.The additive composition of claim 10 wherein
An open cell polyurethane spray foam insulation composition comprising a
- Part A, isocyanate, foam insulation composition;
- a Part B, polyol, foam insulation
- composition;
- and
- ground mineral wool.
A method of using a ground mineral wool material to improve char-creation properties of a flammable material, the method comprising
- producing a powder by grinding a ceramic, glass, mineral, or slag mineral wool to a particle size of 1 to 595 microns;
- adding the powder to Part A or Part B of a isocyanate/polyol foam composition in a concentration range of 2 to 40 weight percent.
Dependencies are inferred from the claim text.