Biodegradable foam compositions for extinguishing fires

Details Biodegradable foam compositions for extinguishing fires Biodegradable foam compositions for extinguishing fires

A - Human Necessities

62

D

A62D 1/00 (2006.01) A62D 1/02 (2006.01)

Patent

CA 2270537

Biodegradable foam compositions for extinguishing class B fires are disclosed that may be in either a liquid concentrate or a powder concentrate form. The concentrates comprise: (1) a foaming group including a high-foaming surfactant such as an alkyl polyglycoside and a plurality of viscosity-reducing agents, for example, polyethylene glycol; and (2) a stiffening group including a water-soluble polymer such as a natural gum, e.g. xanthan gum, and a viscosity-reducing agent. The powder concentrate further comprises a sorption agent.

Cette invention se rapporte à des mousses biodégradables destinées à l'extinction des incendies de classe B, qui peuvent se présenter sous forme concentrée liquide ou sous forme concentrée pulvérulente. Lesdits concentrés comprennent (1) un groupe moussant contenant un tensioactif à haut pouvoir moussant tel qu'un polyglycoside d'alkyle et une pluralité d'agents réducteurs de viscosité tels que, par exemple, du polyéthylène glycol, et (2) un groupe raidisseur contenant un polymère soluble dans l'eau tel qu'une gomme naturelle, par exemple de la gomme xanthane, et un agent réducteur de viscosité. Le concentré pulvérulent peut également comporter un agent de sorption.

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