Alcohol resistant film-forming fluoroprotein foam concentrates
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United States of America Patent
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Oct 20, 1998
Grant Date -
N/A
app pub date -
Jul 26, 1996
filing date -
Jul 27, 1995
priority date (Note) -
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Abstract
The present invention relates to firefighting foam concentrates including a protein hydrolysate in association with: (a) at least one fluorinated cotelomer which has a perfluoroalkyl radical and a polymerized chain consisting of units of an anionic hydrophilic monomer and of a nonionic hydrophilic monomer, and (b) at least one fluorinated surface-active agent whose aqueous solution at a concentration 1 g/l has at 20.degree. C. a surface tension lower than 25 mN/m. These film-forming emulsifiers are effective both against hydrocarbon fires and against polar-liquid fires.
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