Gypsum Panel Having Enhanced Fire Resistance
AssigneeGold Bond Building Products, LLC
InventorsXing Yang, Ratnasabapathy Gurunathan Iyer, Veda Evans, Eli Stav
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Abstract
The present invention is directed to a gypsum panel with enhanced fire resistance properties and a method of making such gypsum panel. In one embodiment, the gypsum panel comprises a gypsum core, a fire resistance composition, a first facing material, and a second facing material. The fire resistance composition may include phosphorus, nitrogen, boron, or a combination thereof. The weight ratio of phosphorus to nitrogen may be 40-95:0-50. The weight ratio of phosphorus to boron may be 40-95:0-10. The methods of the present invention are directed to making the aforementioned gypsum panels.
Claims21
A gypsum panel comprising:
- a gypsum core, the gypsum core comprising gypsum;
- a fire resistance composition, the fire resistance composition comprising a phosphorus containing additive, the fire resistance composition comprising nitrogen, boron, or a combination thereof, wherein the weight ratio of phosphorus to nitrogen in the fire resistance composition is 40-95:0-50, wherein the weight ratio of phosphorus to boron in the fire resistance composition is 40-95:0-10;
- and
- a first facing material and a second facing material sandwiching the gypsum core.
A gypsum panel comprising:
- a gypsum core, the gypsum core comprising gypsum;
- a fire resistance composition, the fire resistance composition comprising a phosphorus containing additive and a boron containing additive, wherein the weight ratio of phosphorus to boron in the fire resistance composition is 50-95:1-10;
- and
- a first facing material and a second facing material sandwiching the gypsum core.
A method for making a gypsum panel comprising:
- providing a first facing material;
- depositing a gypsum slurry comprising stucco and water onto the first facing material;
- providing a second facing material on the gypsum slurry;
- allowing the stucco to convert to calcium sulfate dihydrate;
- and
- wherein the gypsum panel comprises a fire resistance composition, the fire resistance composition comprising a phosphorus containing additive, the fire resistance composition comprising nitrogen, boron, or a combination thereof, wherein the weight ratio of phosphorus to nitrogen in the fire resistance composition is 40-95:0-50, wherein the weight ratio of phosphorus to boron in the fire resistance composition is 40-95:0-10.
Dependencies are inferred from the claim text.