Compositions for polar solvent fire fighting containing perfluoroalkyl terminated co-oligomer concentrates and polysaccharides

摘要: Co-oligmers of the formula R f --E m --(S) n --[M 1 ] x 2 y --H and mixtures thereof, wherein is a perfluoroalkyl group, E linkage M represents non-ionic hydrophilic monomer unit, an anionic are optionally 0 or 1, represent number units present in novel co-oligomers, sum being between 5 200, y/(x+y) 0.01 0.98; useful as additives polar-solvent fire-fighting compositions when used conjunction with polysaccharides other adjuvants. They improve dynamic foam stability vapor suppressing ability foam, thereby reducing flammability polar solvent contaminated foams consequently improving extinguishment burnback resistance.