Compositions for polar solvent fire fighting containing perfluor

Details Compositions for polar solvent fire fighting containing perfluor Compositions for polar solvent fire fighting containing perfluor

1992-02-06

1993-06-08

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 57, 524 58, 252 2, 252 3, 252 805, C08L 500, A62D 100

Patent

active

052180212

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

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Chemical Abstract No. 68-40612q.
Chem. Abst. 96:125645c.
Chem. Abst. 113:214907b.

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