Fire-break caulking and filling device

{
  "publication_number": "US9908965B2",
  "country": "US",
  "kind": "B2",
  "title": "Fire-break caulking and filling device",
  "abstract": "The invention relates to a caulking or filling device having fire-break properties and made of an elastic material comprising polyurethane foam. The foam is obtained by reacting at least one polyol having a molecular weight of 4000 to 7000 g/mol and an OH index of 20 to 40 (mg KOH/g), and an isocyanate in the form of a prepolymer or quasi-prepolymer comprising between 5 and 25% of free NCO functions. The elastic material comprises at least 50 wt % of flame-retarding agents. The invention also relates to the use of the device for making seals or fillings having fire-stopping characteristics.",
  "claims": [
    "1. Caulking or filling device with fire-break properties comprising an elastic material comprising polyurethane foam, characterized in that said polyurethane foam is obtained by reacting: at least one polyol with a molecular mass of 4000 to 7000 g/mol and an OH index of 20 to 40 mg KOH/g in a mixture of 0.3 to 1.5 weight % of water as an expansion agent, 0.1 to 2 weight % of a catalytic system of the amine type, and at least one cell stabilization agent, wherein a total amount of cell stabilization agent compared to the weight of said elastic material is in a range of 0.3 to 0.5 weight %, and an isocyanate in the form of a prepolymer or a quasi-prepolymer comprising 5 to 25% free NCO functions based on the weight of said isocyanate, and, in that, said elastic material comprises at least 50 weight % of fire retardant agents.",
    "2. Device according to claim 1, wherein said at least one polyol is combined with at least one material selected from the group consisting of a polyol with a molecular mass of 2000 to 5000 g/mol and an OH index of 20 to 50, a polyol with an OH index of approximately 28.5, and an organic oil.",
    "3. Caulking or filling device with fire-break properties comprising an elastic material comprising polyurethane foam, characterized in that said polyurethane foam is obtained by reacting: at least one polyol with a molecular mass of 4000 to 7000 g/mol and an OH index of 20 to 40 mg KOH/g in a mixture of 0.3 to 1.5 weight % of water as an expansion agent, 0.1 to 2 weight % of a catalytic system of the amine type, and at least one cell stabilization agent, wherein a total amount of cell stabilization agent compared to the weight of said elastic material is in a range of 0.3 to 0.5 weight %, and an isocyanate in the form of a prepolymer or a quasi-prepolymer comprising 5 to 25% free NCO functions based on the weight of said isocyanate, and, in that, said elastic material comprises at least 50 weight % of fire retardant agents comprising a solid carbonization agent of the type selected from the group consisting of graphite, a reactive carbonization agent, and a mineral vitrification agent.",
    "4. Device according to claim 3, wherein said solid carbonization agent comprises at least two agents with different granulometric grades.",
    "5. Device according to claim 3, wherein said solid carbonization agent comprises at least a graphite having a 150 to 300 μm grade.",
    "6. Device according to claim 1, wherein the at least one polyol is mixed with 0.6 to 0.9 weight % of water as an expansion agent.",
    "7. Device according to claim 2, wherein said organic oil is incorporated at 5 to 40 weight % compared to the total weight of the at least one polyol.",
    "8. Device according to claim 1, wherein at least one of the following additives is added as a stabilizer of a graphite crust: 2 to 5 weight % of fibrous material with a grade of 75 to 250 μm, and at most 2 weight % of TiO 2.",
    "9. Device according to claim 1, wherein said isocyanate has 5 to 15% free NCO functions based on the weight of said isocyanate.",
    "10. A long rod with an even section for the purpose of introducing it in an opening, as a caulking and/or expansion seal, the long rod being made of the caulking or filling device according to claim 1.",
    "11. A method for providing an elastic filling having fire-break properties between slabs or shells, comprising: providing adjacent slabs and/or shells having a gap therebetween; and then inserting the caulking or filling device according to claim 1 into the gap between adjacent slabs and/or shells.",
    "12. Device according to claim 3, wherein said at least one polyol is combined with at least one material selected from the group consisting of a polyol with a molecular mass of 2000 to 5000 g/mol and an OH index of 20 to 50, a polyol with an OH index of approximately 28.5, and an organic oil.",
    "13. Device according to claim 12, wherein said organic oil is incorporated at 5 to 40 weight % compared to the total weight of the polyol.",
    "14. Device according to claim 3, wherein said at least one polyol is mixed with 0.6 to 0.9 weight % of water as an expansion agent.",
    "15. Device according to claim 3, wherein at least one of the following additives is added as a stabilizer of a graphite crust: 2 to 5 weight % of fibrous material with a grade of 75 to 250 μm, and at most 2 weight % of TiO 2.",
    "16. Device according to claim 3, wherein said isocyanate has 5 to 15% free NCO functions based on the weight of said isocyanate.",
    "17. A long rod with an even section for the purpose of introducing it in an opening, as a caulking and/or expansion seal, the long rod being made of the caulking or filling device according to claim 3.",
    "18. A method for providing an elastic filling and with fire-break properties between slabs or shells, comprising: providing adjacent slabs and/or shells having a gap therebetween; and then inserting the caulking or filling device according to claim 3 into the gap between adjacent slabs and/or shells.",
    "19. The method according to claim 18, wherein the gap between adjacent slabs and/or shells is smaller than a width of the caulking or filling device.",
    "20. The method according to claim 11, wherein the gap between adjacent slabs and/or shells is smaller than a width of the caulking or filling device."
  ],
  "description_excerpt": "The domain of the present invention concerns passive protection against fires, and in particular means of fire-break caulking and/or filling, in particular for use as means of partition, such as expansion seals or panels.\n\nPartition or expansion seals are placed between concrete or masonry slabs or shells (walls). These seals are produced by placing a polystyrene type plastic plate or board when concrete is poured, which is then removed, once the construction is dry. In the space left empty due to removal of the polystyrene, or the filling materials, seals with break-fire properties are inserted.\n\nThese seals may be of varying sizes, static (partition) or dynamic (expansion J seals). FIG. 1 a to 1 e show different conventional configurations:\n\nCurrent solutions for installation of the seals are illustrated in FIG. 2, wherein the reference 1 designates a roll, reference 2 a cordon of supporting glue, and the reference 3 refers to the concrete construction.\n\nThis process is currently widely used. It comprises several materials which meet all the requirements imposed on fire-beak expansion seals:\n\nOther solutions exist which rely on a foam seal supported with mastic.",
  "cpc": [
    "C08G 18/10",
    "C08G 18/14",
    "C08G 18/4829",
    "C08G 2101/0083",
    "C08G 2110/0083",
    "C08G 2190/00",
    "C08K 3/38",
    "C08K 5/523",
    "C08L 75/04",
    "C09K 21/12",
    "E04B 1/6812"
  ],
  "ipc": [
    "C08J 9/35",
    "C09D 175/08",
    "C08G 18/08",
    "C08G 18/10",
    "C08K 5/523",
    "C09K 21/12"
  ],
  "assignees": [
    "COMPART Sas",
    "IFP Energies Nouvelles IFPEN"
  ],
  "inventors": [
    "Jean Sauttreau",
    "Laurent Bergogne"
  ],
  "filing_date": "2009-03-27",
  "publication_date": "2018-03-06",
  "grant_date": "2018-03-06",
  "priority_date": "2008-03-28",
  "application_number": "US-93468309-A",
  "family_id": "39929607",
  "cited_by_count": 3,
  "citations": [
    "EP0400402A1",
    "US5739173A",
    "US5597885A",
    "US5981612A",
    "US20040020148A1",
    "US6713522B2",
    "US20070094963A1",
    "FR2873300A1"
  ]
}