FIRE EXTINGUISHING OR RETARDING MATERIAL

摘要

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.