The invention relates to a firestop material consisting of a polymer foam, notably a polyurethane foam, containing flame-retardant means. This firestop material is characterized in that the flame-retardant means consist of means designed to form a charred layer on the foam surface, under the effect of a rise in the temperature of the material resulting from a fire, and are supplemented by at least one inorganic type flame retardant. The invention furthermore relates to a chemical composition intended, after expansion and drying, to form such a firestop material, and to a use of such a firestop material.

Provided are fire-fighting foam concentrate compositions incorporating multiple dye indicator agents, fire-fighting foams formed from said compositions, and to methods for evaluating fire-fighting foam concentrates. The compositions are useful as a complex anti-counterfeiting system and also allow for the differentiation of different types of authentic concentrates.

The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a fluoroolefin and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents.

An alternative is needed for replacing aqueous film forming foams (AFFF) containing fluorine. The ethyleneamine salt of a chemical precursor solution has been made that is a surfactant with both foaming properties and flame retardant properties. The chemical precursor solution is formed by reacting a complex alkyl compound with sulfuric or polyphosphoric acid. The resultant foam made with this surfactant is applied with a large footprint to overcome poor spreading coefficient and is successful in extinguishing fuel fires.

An aqueous concentrate, which can be diluted with an aqueous diluent to form a foam precursor composition, is provided. The foam precursor composition may be aerated to form a firefighting foam. The present aqueous firefighting composition includes a surfactant component, which includes one or more of an anionic surfactant, a zwitterionic surfactant and a nonionic surfactant; a rheology additive, which includes clay; and at least about 30 wt. % water.

The present specification discloses nontoxic fire extinguishing agent compositions, devices, methods and uses of same that are safe for both users and the environment. In particular examples, the nontoxic fire extinguishing agent comprises a microbial supernatant.

Aqueous film forming firefighting composition concentrates are provided that contain an effective amount of a monomeric zwitterionic or anionic C.sub.6 perfluoroalkyl surfactant having a molecule weight less than 800 daltons, The compositions also contain an effective amount of a foam stabilizing agent, and an effective amount of at least one non-fluorinated surfactant. The composition has less than 0.8% F, and is substantially free of any surfactant containing a perfluoroalkyl group containing more than 6 carbon atoms. The composition meets Military Specification MIL-F-24385F.

A receptacle for use with lithium ion charging stations. The receptacle contains an admixture for use in suppressing a cellular telephone battery fire. The admixture is a hydrated super absorbent polymer having substantially superior fire suppression properties. When used with lithium ion batteries, once a battery is arcing or an excess buildup of heat occurs, the walls of the receptacle will rupture and the admixture will cover the specific area causing a thermal event. These particular properties and ratios of the admixture will enable a fire to be extinguished. The receptacle may include heat or pressure sensors.

A firefighting extinguishing composition and method of making a firefighting extinguishing composition is provided. The firefighting extinguishing composition includes a suspension system comprising water and at least one suspending agent. The firefighting extinguishing composition also includes a first polysaccharide that is soluble in the suspension system. The firefighting extinguishing composition also includes a second polysaccharide that is insoluble in the suspension system but soluble in water alone. The firefighting extinguishing compositions can be used in many firefighting applications, including structural fires, packaging fires, material fires, tire fires, coal fires, peat fires, wild fires, bush fires, forest fires, and other similarly naturally occurring and industrially based fires.

The invention relates to fire extinguishing foams or concentrates thereof, these comprising a carbohydrate-containing siloxane surfactant.