| 摘要 |
A fire-extinguishing composition comprising a fluorine-containing surfactant of the formula: <CHEM> wherein Rf is a polyfluoroalkyl group having from 3 to 20 carbon atoms, X is a bivalent connecting group containing an ether-type oxygen atom, R is an alkylene group, Y is <CHEM> wherein Z<(-)> is an anionic group-containing alkyl group, R<1> is a hydrogen atom, an alkyl group or a hydroxyalkyl group, or forms together with R<2> an alkylene group, R<2> is a hydrogen atom, an alkyl group or a hydroxyalkyl group, or forms together with R<1> an alkylene group, and R<3> is a hydrogen atom, an alkyl group or a hydroxyalkyl group. |
