초록 ▼

A foam concentrate or fire fighting composition for extinguishing and/or retarding fires is provided that meets UL162, Class B performance criteria for at least one of AFFF agents, AR-AFFF agents and fluoroprotein (FP) agents. The concentrate is used to form the fire fighting composition when mixed

A foam concentrate or fire fighting composition for extinguishing and/or retarding fires is provided that meets UL162, Class B performance criteria for at least one of AFFF agents, AR-AFFF agents and fluoroprotein (FP) agents. The concentrate is used to form the fire fighting composition when mixed with water. The concentrate or fire fighting composition includes a high molecular weight fluoropolymer and water and may have a fluorine content wherein less than about 0.008% fluorine by weight of the fire fighting composition is provided from any fluorochemical surfactant. Further, the composition may meet the UL162, Class B performance criteria without forming a stable seal on cyclohexane.

대표청구항 ▼

I claim: 1. A method of extinguishing or retarding a fire comprising: providing a fire fighting composition comprising water, a hydrocarbon surfactant and a high molecular weight fluoropolymer having an average molecular weight of at least 3000 g/mol so that the composition does not form a stable s

I claim: 1. A method of extinguishing or retarding a fire comprising: providing a fire fighting composition comprising water, a hydrocarbon surfactant and a high molecular weight fluoropolymer having an average molecular weight of at least 3000 g/mol so that the composition does not form a stable seal on cyclohexane and meets UL 162, Class B performance criteria for at least one of AFFF agents, AR-AFFF agents and fluoroprotein (FP) agents; and applying the composition to an area where extinguishment or retardation of the fire is desired. 2. The method of claim 1, wherein: the composition contains less than 0.008% by weight fluorine provided by any fluorochemical surfactant. 3. The method of claim 1, further comprising: applying the composition to the area in combination with a dry fire fighting agent. 4. The method of claim 1, wherein: the composition contains a fluorochemical surfactant. 5. The method of claim 1, wherein: the composition contains a fluorochemical surfactant in an amount of from 0.001 to 0.008% fluorine by weight of the fire fighting composition. 6. The method of claim 1, wherein: the composition the fire fighting composition meets UL 162, Class B performance criteria for at least two of AFFF agents, AR-AFFF agents and FP agents. 7. The method of claim 1, wherein: the fire fighting composition meets UL 162, Class B performance criteria for AFFF agents, AR-AFFF agents and fluoroprotein (FP) agents. 8. The method of claim 1, wherein: the high molecular weight fluoropolymer has an average molecular weight of at least 5000 g/mol. 9. The method of claim 1, wherein: the fluoropolymer provides a foam life of at least 30 minutes without fluorochemical surfactants. 10. The method of claim 1, wherein: the fire fighting composition has a spreading coefficient (SC) against cyclohexane of from about-4 or more. 11. The method of claim 1, wherein: the fluoropolymer provides the composition with from about 0. 0003% or more fluorine by weight of the composition. 12. The method of claim 1, wherein: the fluoropolymer provides the composition with from about 0. 045% or less fluorine by weight of the composition. 13. The method of claim 1, wherein: the fluoropolymer provides the composition with from about 0. 0003% to about 0.045% fluorine by weight of the composition. 14. The method of claim 1, wherein: the high molecular weight fluoropolymer has an average molecular weight of at least 10,000 g/mol. 15. A method of extinguishing or retarding a fire comprising: providing a foam concentrate comprising water, a hydrocarbon surfactant and a high molecular weight fluoropolymer having an average molecular weight of at least 3000 g/mol; mixing the foam concentrate with water to provide a fire fighting composition that does not form a stable seal on cyclohexane and meets UL 162, Class B performance criteria for at least one of AFFF agents, AR-AFFF agents and fluoroprotein (FP) agents; and applying the composition to an area where extinguishment or retardation of the fire is desired. 16. The method of claim 15, wherein: the foam concentrate is used in an amount of from about 1% to about 10% by weight of the composition. 17. The method of claim 15, wherein: the composition contains less than 0.008% by weight fluorine provided by any fluorochemical surfactant. 18. The method of claim 15, further comprising: applying the composition to the area in combination with a dry fire fighting agent. 19. The method of claim 15, wherein: the fire fighting composition meets UL 162, Class B performance criteria for AFFF agents. 20. The method of claim 15, wherein: the concentrate contains a fluorochemical surfactant. 21. The method of claim 15, wherein: wherein the concentrate has a fluorine content provided from the fluorochemical surfactant that provides the fire fighting composition with from 0.001 to 0.008% fluorine by weight of the fire fighting composition. 22. The method of claim 15, wherein: the fire fighting composition meets UL 162, Class B performance criteria for at least two of AFFF agents, AR-AFFF agents and FP agents. 23. The method of claim 15, wherein: the fire fighting composition meets UL 162, Class B performance criteria for AFFF agents, AR-AFFF agents and fluoroprotein (FP) agents. 24. The method of claim 15, wherein: the fluoropolymer provides a foam life of at least 30 minutes without fluorochemical surfactants. 25. The method of claim 15, wherein: the fire fighting composition has a spreading coefficient (SC) against cyclohexane of from about-4 or more. 26. The method of claim 15, wherein: the high molecular fluoropolymer having an average molecular weight of at least 5000 g/mol. 27. The method of claim 15, wherein: the fluoropolymer provides the composition with from about 0. 0003% or more fluorine by weight of the composition. 28. The method of claim 15, wherein: the fluoropolymer provides the composition with from about 0. 045% or less fluorine by weight of the composition. 29. The method of claim 15, wherein: the fluoropolymer provides the composition with from about 0. 0003% to about 0.045% fluorine by weight of the composition. 30. The method of claim 15, wherein: the high molecular weight fluoropolymer has an average molecular weight of at least 10,000 g/mol. 31. A method of extinguishing or retarding a fire comprising: providing a fire fighting composition comprising water, a hydrocarbon surfactant and a high molecular weight fluoropolymer having an average molecular weight of at least 5000 g/mol so that the composition has from about 0.0003% or more fluorine by weight of the composition from the fluoropolymer and does not form a stable seal on cyclohexane and meets UL 162, Class B performance criteria for AFFF agents and optionally at least one of AR-AFFF agents and fluoroprotein (FP) agents; and applying the composition to an area where extinguishment or retardation of the fire is desired.