Alcohol resistant aqueous film forming firefighting foam
AssigneeChubb National Foam, Inc.
InventorsEdward C. Norman, Anne C. Regina
Life of this patent
Estimating the term…
Abstract
AFFF and ARAFFF firefighting foam concentrates which include alkyl polyglycoside surfactants are provided. These surfactants enhance the performance of the perfluoroalkyl surfactants.
Claims32
A foamable firefighting concentrate composition comprising:
- perfluoroalkyl surfactants, a solvent and an effective amount of alkyl polyglycoside sufficient to permit a reduction in the concentration of the perfluoroalkyl surfactant without loss of firefighting performance by the composition, said alkyl polyglycoside present in an amount from between about 1.0 to 10.0% by weight.
The composition of claim 23 wherein the perfluoroalkyl surfactants are present in an amount from between about 0.5 to 3% by weight.
An aqueous film forming concentrate composition for dilution with water and suitable for foaming with air to produce a firefighting foam, said composition consisting essentially of the following components in the indicated percentages by weight:
- ______________________________________ Perfluoralkyl surfactant(s) 0.5-3.0% Alkyl polyglycoside surfactant(s) 1.0-10.0% Glycol 0-10.0% Glycol ether 4.0-20.0% Magnesium sulfate 0-1.0% Anionic surfactant(s) 0.0-6.0% Nonionic surfactant(s) 0.0-2.0% Sequestering agent(s) 0-1.0% Buffering agent(s) 0-2.0% Corrosion inhibitor(s) 0-2.0% Water Balance ______________________________________
An aqueous film forming concentrate composition for dilution with water suitable for foaming with air to produce a firefighting foam, said composition consisting essentially of the following components in the indicated percentage by weight:
- ______________________________________ Perfluoroalkyl surfactant(s) 0.8-2.0% Alkyl polyglycoside surfactant(s) 1.0-10.0% Glycol 0-5.0% Glycol ether 2.0-5.0% Magnesium sulfate 0-1.0% Anionic surfactant(s) 2.0-5.0% Sequestering agent(s) 0.1-1.0% Buffering agent 0-2.0% Preservative(s) 0-1.5% Heteropolysaccharide polymer 0.5-1.5% Water Balance ______________________________________
An aqueous film forming concentrate composition for dilution with water suitable for foaming with air to produce a firefighting foam, said composition consisting essentially of the following components in the indicated percentage by weight:
- ______________________________________ Perfluoroalkyl surfactant(s) 0.8-2.0% Alkyl polyglycoside surfactant(s) 1.0-10.0% Glycol ether 2.0-5.0% Glycol 0-5.0% Magnesium sulfate 0.0-2.0% Heteropolysaccharide polymer 1.0-2.0% Anionic surfactant(s) 0-5.0% Buffering agent(s) 0-2.0% Sequestering agent(s) 0.1-1.0% Water ______________________________________
A foamable, firefighting concentrate composition comprising by weight:
- ______________________________________ Glycol Ether 2.0-5.0% Heteropolysaccharide polymer 0.5-1.5% Perfluoroalkyl surfactant 0.8-2.0% Alkylpolyglycoside 1.0-10.0% Anionic surfactant 0.0-5.0% Water qs ______________________________________
A foamable, firefighting concentrate composition comprising by weight:
- ______________________________________ Glycol Ether 2.0-5.0% Heteropolysaccharide polymer 1.0-2.0% Perfluoroalkyl surfactant 0.5-3.0% Alkylpolyglycoside 1.0-10.0% Anionic surfactant 0.0-5.0% Water qs ______________________________________
A foamable, firefighting concentrate composition comprising by weight:
- ______________________________________ Glycol Ether 0.0-10.0% Glycol Ether 4.0-20.0% Perfluoroalkyl surfactant 0.5-3.0% Alkylpolyglycoside 1.0-10.0% Anionic surfactant 0.0-6.0% Water qs ______________________________________
Dependencies are inferred from the claim text.