PERFLUOROALKYL-SUBSTITUTED AMINO ACID OLIGOMERS OR POLYMERS AND THEIR USE AS FOAM STABILIZERS IN AQUEOUS FIRE-FIGHTING-FOAM AGENTS AND AS OIL REPELLENT PAPER AND TEXTILE FINISHES

摘要

Perfluoroalkyl-substituted amino acid oligomers or polymers obtainable from (A) an aliphatic diamino acid having 3 to 10 carbon atoms such as lysine, (B) a chain extender such as epichlorohydrin, a dihalide or an aliphatic diepoxide, (C) an amino-reactive allyl compound and (D) a perfluoroalkyl iodide, and optionally, other reactants, are useful as grease-proofing agents for paper and are excellent foam stabilizers for Aqueous Fire-Fighting Foam (AFFF) formulations used on polar solvent fires.