Compositions – Fire-extinguishing – Foam or gas phase containing
Patent
1988-04-27
1989-06-06
Locker, Howard J.
Compositions
Fire-extinguishing
Foam or gas phase containing
102303, 86 50, 252 805, 252307, 252382, 252607, 252610, 252350, 252351, 169 46, C09K 2100, F42B 3300, B01J 1300, A62D 108
Patent
active
048369390
ABSTRACT:
A stable aqueous foam concentrate for use in the generation of a stable aqueous foam having an expansion ratio of between 10:1 to as high as 1000:1 or more includes an anionic surfactant material of a chain length of between C12 to C14, a glycol or mixtures thereof, a fatty alcohol of between C12 and C14 chain length and a copolymer of maleic anhydride. The components, other than the polymer are mixed to form a micellar structure and the polyer is then added to react with at least one of the components of at least some of the micelles. Upon foam formation, the polymer which is covalently bound operates to reduce the water drainage rate to increase the foam stability, the foam being biodegradable.
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Locker Howard J.
Rockwood Systems Corporation
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