Claims
- 1. A fire-resistant building insulation product consisting essentially of mineral wool and dicalcium phosphate in close proximity to said mineral wool, said dicalcium phosphate being present in an amount sufficient to form a high temperature coating on at least a portion of the mineral wool in close proximity thereto so that when the insulation product is exposed to elevated temperatures normally melting untreated mineral wool, the formed high temperature coating enables the mineral wool portion to withstand such elevated temperatures without melting, whereby the product is rendered fire-resistant.
- 2. A fire-resistant product as in claim 1, wherein said dicalcium phosphate is present in an amount greater than about 0.35 pounds per 100 square feet of said mineral wool.
- 3. A fire-resistant product as in claim 1 or 2, which includes a septum for carrying said dicalcium phosphate, said septum being interposed between layers of said mineral wool.
- 4. A fire-resistant product as in claim 3, wherein said septum is a mineral fiber mat, and wherein said dicalcium phosphate is present in an amount to form a high temperature protective coating on the mineral fibers of said mat.
- 5. A fire-resistant product as in claim 4, wherein said mineral wool layers are of substantially equal thicknesses so that said mat is located substantially at the midplane of said insulation product.
- 6. A fire-resistant building insulation product comprising a batting of glass wool having a fire-resistant layer which consists essentially of dicalcium phosphate in close proximity to said glass wool of said batting, wherein said dicalcium phosphate is present in an amount which provides at least about 0.0008 pounds of elemental phosphorus per square foot of said batting so as to form a high-temperature protective coating on the glass wool in close proximity to said layer when said product is exposed to temperatures greater than about 300.degree. C.
- 7. A product as in claim 6, wherein said layer includes a surface region of said glass wool batting impregnated with said dicalcium phosphate so that said dicalcium phosphate is in contact with at least a portion of said glass wool forming the said batting surface region.
- 8. A product as in claim 6, wherein said layer includes a septum interposed between layers of said glass wool batting, wherein said dicalcium phosphate is carried by said septum.
- 9. A fire-resistant mineral wool insulation product consisting essentially of at least two layers of mineral wool and a septum interposed therebetween, said septum carrying dicalcium phosphate in an amount which provides at least about 0.0008 pounds of elemental phosphorus per square foot of said septum so as to form a high-temperature protective coating on said mineral wool when said fire-resistant mineral wool insulation product is exposed to temperatures greater than about 300.degree. C., whereby said product is fire-protected.
- 10. A product as in claim 9, wherein said septum is a glass fiber mat.
- 11. A product as in claim 10, wherein said mineral wool layers are of substantially equal thicknesses so that said mat is located substantially at the midplane of said product.
- 12. A product as in claim 10, wherein said mat is a nonwoven glass fiber mat.
- 13. A product as in claim 10, wherein said septum is paper.
- 14. A product as in claim 10, wherein said septum is wire mesh screen.
- 15. A fire-resistant glass wool insulation product having a Class I rating and consisting essentially of at least two layers of glass wool batting and a substrate interposed therebetween, said substrate carrying dicalcium phosphate which renders said glass wool batting fire-resistant, wherein the dicalcium phosphate is present in an amount sufficient to provide at least about 0.0008 pounds of elemental phosphorus per square foot of the batting.
- 16. A fire-resistant building insulation product consisting essentially of glass wool and dicalcium phosphate in close proximity to said glass wool, said dicalcium phosphate being present in an amount greater than about 0.35 pounds per 100 square feet of said glass wool, said dicalcium phosphate rendering the glass wool fire-resistant by forming a high temperature phosphate compound in response to said building insulation product being exposed to an elevated temperature sufficient to thermally decompose said dicalcium phosphate, whereby said product is fire-resistant.
- 17. A fire-resistant building insulation product which consisting essentially of a glass fiber substrate, and dicalcium phosphate carried by said substrate and present in an amount greater than about 0.35 pounds per 100 square feet of said substrate.
Parent Case Info
This is a continuation of application Ser. No. 07/416,816, filed on Oct. 4, 1989, now abandoned, which was a continuation-in-part of Ser. No. 07/320,858, filed Mar. 8, 1989, now abandoned, which was a continuation of Ser. No. 07/118,593, filed Nov. 9, 1987, now abandoned.
US Referenced Citations (21)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0284950 |
Oct 1988 |
EPX |
53-49199 |
May 1978 |
JPX |
53-106828 |
Sep 1978 |
JPX |
Non-Patent Literature Citations (1)
Entry |
Ritter II et al., Coated Ceramic Fibers, Research Disclosure 218, p. 235, No. 21835, Jun., 1982. |
Continuations (2)
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Number |
Date |
Country |
Parent |
416816 |
Oct 1989 |
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Parent |
118593 |
Nov 1987 |
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Continuation in Parts (1)
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Number |
Date |
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Parent |
320858 |
Mar 1989 |
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