合成了新型的氟化磺酸盐表面活性剂,其中全氟烷基链被醚氧(–O–)或亚甲基(–CH 2 –)单元中断。这两类分子都涉及多步合成。氟醚磺酸盐(RfOCF 2 CF 2 CH 2 CH 2 SO 3 H,Rf = C 2 F 5,C 3 F 7)通过四个步骤实现,包括全氟乙烯基醚的氟碘化(RfCF = CF 2),乙基化,氯化和水解。亚甲基间断氟磺酸盐(RfCH 2 CF 2 CH 2还分四个步骤制备CH 2 SO 3 H,Rf = C 4 F 9,C 6 F 13),包括氟代烷基碘的偏二氟乙烯插入,乙烯插入,氯化和水解。所有中间体和最终产物均通过1 H和19 F NMR进行了很好的表征。将这些新型氟化表面活性剂与市售氟磺酸盐(C 6 F 13 CH 2 CH 2 SO 3H)表面活性。这些材料与市售含氟表面活性剂的表面张力相匹配,但由于它们的氟含量较低而更加有效。
A method of providing a surface effect to a medium or substrate comprising contacting the medium or substrate with a compound of formula (I):
wherein
R
a
is linear or branched F(CF
2
)
n
(CH
2
CF
2
)
m
—, or linear or branched F(CF
2
)
r
—O—B—;
B is (C
s
F
2s
) optionally interrupted by 1 to 2 catenary oxygen atoms, each oxygen bonded to two carbon atoms,
n is 2 to 4, m is 1 to 4, r is 1 to 4, s is 1 to 4, provided that (r+s) is a maximum of 7,
A is O or (CH
2
)
k
—COO,
R
1
is hydrogen or a methyl,
R
2
and R
3
are each independently alkyl having 1 to 6 carbon atoms, and
p, q and k are each independently integers from 1 to 10.
A compound of Formula (I), wherein Ra is linear or branched F(CF2)n(CH2CF2)m-, or linear or branched F(CF2)o interrupted by 1 to 6 catenary oxygen atoms, each oxygen bonded to two carbon atoms, m is 1 to 4, n is 2 to 6, o is 2 to 7, A is O or (CH2)k-COO, R1 is hydrogen or a methyl, R2 and R3 are each independently alkyl having 1 to 6 carbon atoms, and p, q and k are each independently integers from 1 to 10, which is suitable for use as a surfactant and in fire fighting formulations.
[EN] FLUOROALKYL ETHER SULFONATE SURFACTANTS<br/>[FR] TENSIOACTIFS DE TYPE FLUOROALKYL-ÉTHER-SULFONATE
申请人:DU PONT
公开号:WO2010056699A1
公开(公告)日:2010-05-20
A compound of Formula (1) wherein Formula (2) linear or branched perfluoroalkyl group, X and X' are each independently H or F, provided that at least one of X or X' is F, each Y is independently H or F, m is an integer from 1 to 4, n is an integer from 1 to 2, and M is H, NH4, Li, Na or K, provided that when CXX' is CHF or CFH, then n is 2.
A compound of Formula (I):
wherein
Ra is linear or branched F(CF2)n(CH2CF2)m—, or linear or branched F(CF2)o interrupted by 1 to 6 catenary oxygen atoms, each oxygen bonded to two carbon atoms,
m is 1 to 4, n is 2 to 6, o is 2 to 7,
A is O or (CH2)k—COO,
R1 is hydrogen or a methyl,
R2 and R3 are each independently alkyl having 1 to 6 carbon atoms, and
p, q and k are each independently integers from 1 to 10,
which is suitable for use as a surfactant and in fire fighting formulations.
A compound of Formula (I):
wherein
R
a
is linear or branched F(CF
2
)
n
(CH
2
CF
2
)
m
—, or linear or branched F(CF
2
)
o
interrupted by 1 to 6 catenary oxygen atoms, each oxygen bonded to two carbon atoms,
m is 1 to 4, n is 2 to 6, o is 2 to 7,
A is O or (CH
2
)
k
—COO,
R
1
is hydrogen or a methyl,
R
2
and R
3
are each independently alkyl having 1 to 6 carbon atoms, and
p, q and k are each independently integers from 1 to 10,
which is suitable for use as a surfactant and in fire fighting formulations.