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.
A polymer having at least one carbamate linkage prepared by: (i) reacting (a) at least one diisocyanate, polyisocyanate, or mixture thereof, and (b) at least one fluorinated compound selected from the formula (I):
R
f
(CH
2
)
x
[(CF
2
CF
2
)
y
(CH
2
CH
2
)
z
]
m
(R
1
)
r
—XH (I)
wherein
R
f
is a perfluoroalkyl group having 1 to about 6 carbon atoms;
subscript x is 1 to about 6;
subscripts y, z and m are each independently 1, 2 or 3, or a mixture thereof;
subscript r is 0 or 1;
the total number of carbons in said formula (I) excluding (R
1
)
r
—XH ranges from about 8 to about 22;
X is —O—, —NR—, —S—, —S(CH
2
)
t
O—, or —S(CH
2
)
t
NR—;
subscript t is from 1 to about 10;
R is H or C
1-4
alkyl;
R
1
is certain divalent radicals;
n is 2 to 4;
s is 1 to about 50;
R
2
, R
3
, and R
4
are each independently hydrogen or a C
1
-C
6
alkyl group; and
(ii) optionally reacting with (c) water, a linking agent, or a mixture thereof.