A composition comprising a compound of formula (I) or (II):
(A)
w
-P(O)(O
−
M
+
)
3-w
(I) or
wherein
A is R
f
—(CH
2
)
k
−[(CF
2
CF)
y
—(CH
2
CH
2
)
z
]
m
O and contains from about 8 to about 22 carbon atoms;
R
f
is C
n
F
2n+1
;
n and k are each independently 1 to about 6;
y, z, and m are each independently 1, 2, 3, or mixture thereof;
w is 1 or 2 or a mixture thereof; and
M is hydrogen, ammonium ion, an alkali metal ion, or an alkanolammonium ion.
一种组合物,包括以下公式(I)或(II)的化合物:(A)w-P(O)(O−M+)3-w(I)或其中,A是Rf—(
CH2)k−[(
CF2CF)y—( )z]mO,含有大约8到22个碳原子;Rf是CnF2n+1;n和k各自独立地为1到约6;y、z和m各自独立地为1、2、3或其混合物;w为1或2或其混合物;M是氢、
铵离子、碱
金属离子或脂肪族胺离子。