| 摘要 |
A composition of formula I [Rf(CH2)m(O)n]x-A wherein Rf is a straight or branched perfluoroalkyl group having from about 2 to about 20 carbon atoms, or a mixture thereof, m is a positive integer equal to or greater than 3, n is 0 or 1, x is 1 to about 3, and A is -P(O)(OR1)y(OM+)3-y-x, -C(O)CH(SO3-M+)CH2C(O)-, -(CH2CH2O)d(CH2CHR2O)eR3, or -SO2B, M+ is an alkali metal ion, NH4+, or NH2(CH2CH2OH)2, B is N(R)2 or N(CH2CH3)(CH2CH2OH), R1 is C1 to C3 alkyl, and R2 is C1 to C4 alkyl, R3 is H or CH3, y is 0 to about 1, d is 0 to about 16, e is 0 to about 16, provided that (d+e) is from about 3 to about 16 is disclosed.
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