Synthesis and repellent properties of vinylidene fluoride-containing polyacrylates
摘要:
Fluorinated polyacrylats with side group containing vinylidene fluoride (VDF) units (CF3(CF2)(n) (CH2CF2)(m), n = 3, 5; m = 1, 2) were successfully synthesized. The water and oil repellency properties of these polymers are similar to those of fluorinated polyacrylate with side group containing long perfluorooctyl group (CF3(CF2)(7)I. The thermal telomerization of CF3(CF2)(5)I and CF3(CF2)(3)I with vinylidene fluoride (VDF) provided CF3(CF2)(5)CH2CF2I (1b) and CF3(CF2)(3)CH2CF2CH2CF2I (1c), respectively. The addition of 1b with ethylene followed by hydrolysis gave CF3(CF2)(5)CH2CF2CH2CH2OH (2b). Treatment of le with ethyl vinyl ether in the presence of Na2S2O4 followed by reduction produced CF3(CF2)(3)CH2CF2CH2CF2CH2CH2OH (2c). Fluoroacrylates 3b-d were prepared by acrylation of the corresponding fluoroalcohols 2b-d. The semi-continuous process emulsion co-polymerization of 3a-d with octadecyl acrylate and 2-hydroxylethyl acrylate initiated by (NH4)(2)S2O8 in the presence of a mixture emulsifiers of polyoxyethylene(10)nonyl phenyl ether (TX-10) and sodium lauryl sulfate provided stable latexes 4a-d, respectively. The water and oil repellency properties of 4b (R-f: CF3(CF2)(5)CH2CF2) and 4c (R-f: CF3(CF2)(3)CH2CF2CH2CF2) containing vinylidene fluoride (VDF) units were similar to those of 4a (R-f: CF3(CF2)(7)) containing long perfluoroalkyl group and much better than those of polymer 4d (Rf: CF3(CF2)(3)) with short perfluoroalkyl chain. Thus, polyacrylates containing vinylidene fluoride units showed promising aspects as the alternatives to the currently used water and oil repellent agents with long perfluoroalkyl chains. (C) 2007 Elsevier B.V. All rights reserved.
Synthesis and repellent properties of vinylidene fluoride-containing polyacrylates
摘要:
Fluorinated polyacrylats with side group containing vinylidene fluoride (VDF) units (CF3(CF2)(n) (CH2CF2)(m), n = 3, 5; m = 1, 2) were successfully synthesized. The water and oil repellency properties of these polymers are similar to those of fluorinated polyacrylate with side group containing long perfluorooctyl group (CF3(CF2)(7)I. The thermal telomerization of CF3(CF2)(5)I and CF3(CF2)(3)I with vinylidene fluoride (VDF) provided CF3(CF2)(5)CH2CF2I (1b) and CF3(CF2)(3)CH2CF2CH2CF2I (1c), respectively. The addition of 1b with ethylene followed by hydrolysis gave CF3(CF2)(5)CH2CF2CH2CH2OH (2b). Treatment of le with ethyl vinyl ether in the presence of Na2S2O4 followed by reduction produced CF3(CF2)(3)CH2CF2CH2CF2CH2CH2OH (2c). Fluoroacrylates 3b-d were prepared by acrylation of the corresponding fluoroalcohols 2b-d. The semi-continuous process emulsion co-polymerization of 3a-d with octadecyl acrylate and 2-hydroxylethyl acrylate initiated by (NH4)(2)S2O8 in the presence of a mixture emulsifiers of polyoxyethylene(10)nonyl phenyl ether (TX-10) and sodium lauryl sulfate provided stable latexes 4a-d, respectively. The water and oil repellency properties of 4b (R-f: CF3(CF2)(5)CH2CF2) and 4c (R-f: CF3(CF2)(3)CH2CF2CH2CF2) containing vinylidene fluoride (VDF) units were similar to those of 4a (R-f: CF3(CF2)(7)) containing long perfluoroalkyl group and much better than those of polymer 4d (Rf: CF3(CF2)(3)) with short perfluoroalkyl chain. Thus, polyacrylates containing vinylidene fluoride units showed promising aspects as the alternatives to the currently used water and oil repellent agents with long perfluoroalkyl chains. (C) 2007 Elsevier B.V. All rights reserved.
A compound of Formula 1
R
f
-A-OP(O)(O
−
M
+
)(O—R
H
) Formula 1
wherein
R
f
is a C
2
to C
6
linear or branched perfluoroalkyl optionally interrupted by one, two or three ether oxygen atoms;
A is (CH
2
CF
2
)
m
(CH
2
)
n
—, (CH
2
)
o
SO
2
N(CH
3
)(CH
2
)
p
—, O(CF
2
)
q
(CH
2
)
r
—, or OCHFCF
2
OE-;
m is 1 to 4; n, o, p, and r are each independently 2 to 20; q is 2;
E is a C
2
to C
20
linear or branched alkyl group optionally interrupted by oxygen, sulfur, or nitrogen atoms; a cyclic alkyl group, or a C
6
to C
10
aryl group;
M is a Group I metal or an ammonium cation (NH
x
R
2
y
)
+
wherein R
2
is a C
1
to C
4
alkyl, x is 1 to 4, y is 0 to 3 and x+y is 4; and
R
H
is a C
1
to C
20
linear, branched, or cyclic alkyl, or a C
6
to C
10
aryl, and its use as a surfactant is disclosed.
Partially fluorinated compositions and surface active agents
申请人:Acosta Erick Jose
公开号:US20080113172A1
公开(公告)日:2008-05-15
Partially fluorinated amino acid derivatives are provided that are useful as organogelators and surface treatment materials to provide oil- and water-repellency properties to substrates. Also provided are composite materials comprising a porous support and a porous nanoweb. The porous nanoweb contains fibrous structures of about 10 nm to about 1000 nm effective average fiber diameter.
Synthesis and repellent properties of vinylidene fluoride-containing polyacrylates
作者:Ji-Qing Huang、Wei-Dong Meng、Feng-Ling Qing
DOI:10.1016/j.jfluchem.2007.08.005
日期:2007.12
Fluorinated polyacrylats with side group containing vinylidene fluoride (VDF) units (CF3(CF2)(n) (CH2CF2)(m), n = 3, 5; m = 1, 2) were successfully synthesized. The water and oil repellency properties of these polymers are similar to those of fluorinated polyacrylate with side group containing long perfluorooctyl group (CF3(CF2)(7)I. The thermal telomerization of CF3(CF2)(5)I and CF3(CF2)(3)I with vinylidene fluoride (VDF) provided CF3(CF2)(5)CH2CF2I (1b) and CF3(CF2)(3)CH2CF2CH2CF2I (1c), respectively. The addition of 1b with ethylene followed by hydrolysis gave CF3(CF2)(5)CH2CF2CH2CH2OH (2b). Treatment of le with ethyl vinyl ether in the presence of Na2S2O4 followed by reduction produced CF3(CF2)(3)CH2CF2CH2CF2CH2CH2OH (2c). Fluoroacrylates 3b-d were prepared by acrylation of the corresponding fluoroalcohols 2b-d. The semi-continuous process emulsion co-polymerization of 3a-d with octadecyl acrylate and 2-hydroxylethyl acrylate initiated by (NH4)(2)S2O8 in the presence of a mixture emulsifiers of polyoxyethylene(10)nonyl phenyl ether (TX-10) and sodium lauryl sulfate provided stable latexes 4a-d, respectively. The water and oil repellency properties of 4b (R-f: CF3(CF2)(5)CH2CF2) and 4c (R-f: CF3(CF2)(3)CH2CF2CH2CF2) containing vinylidene fluoride (VDF) units were similar to those of 4a (R-f: CF3(CF2)(7)) containing long perfluoroalkyl group and much better than those of polymer 4d (Rf: CF3(CF2)(3)) with short perfluoroalkyl chain. Thus, polyacrylates containing vinylidene fluoride units showed promising aspects as the alternatives to the currently used water and oil repellent agents with long perfluoroalkyl chains. (C) 2007 Elsevier B.V. All rights reserved.