Use of high molecular weight acrylic polymers in fire fighting foams

An aqueous firefighting foam concentrate comprising:

• 1 to 5 wt. % of a water soluble polyacrylamidomethylpropane sulfonic acid having an average molecular weight of 1000 to 2000 kDa;
• 2 to 5 wt. % polysaccharide gum, which includes galactomannan gum and xanthan gum;
• 1-10 wt % anionic surfactant;
• 5-20 wt % alkylpolyglycoside surfactant;
• and
• 5-25 wt % zwitterionic surfactant.

An aqueous firefighting foam concentrate comprising:

• 1 to 5 wt. % of a water soluble polyacrylamidomethylpropane sulfonic acid having an average molecular weight of at least about 1500 kDa;
• 2 to 5 wt. % polysaccharide gum, which includes at least one galactomannan gum and at least one xanthan gum;
• 1-10 wt % anionic surfactant, which comprises alkyl sulfate;
• 5-20 wt % alkylpolyglycoside surfactant;
• 5-25 wt % zwitterionic surfactant, which comprises alkyl iminodialkanoate;
• and
• 5-20 wt % solvent selected from the group consisting of diethylene glycol monoethyl ether, propylene glycol, ethylene glycol, and/or butylcarbitol.