Biodegradable foam compositions for extinguishing fires
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United States of America Patent
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Mar 16, 1999
Grant Date -
N/A
app pub date -
Nov 4, 1996
filing date -
Nov 4, 1996
priority date (Note) -
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Abstract
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.
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