Fluoroalkyl acid amide surfactants
View Patent ↗Compounds of formula (I) and formula (III): wherein A is —F or —CF 3 ; R f is independently C 1 -C 6 perfluorinated linear or branched alkyl optionally interrupted by one or more oxygens; R o is a linear or branched aliphatic group of about 10 to about 100 carbon atoms, interrupted by about 5 to about 50 ether oxygens, wherein the ratio of ether oxygen to carbon atoms is about 1:2 to about 1:3; and wherein each carbon atom has at most one ether oxygen atom bonded to it, and covalent bonding between ether oxygen atoms is absent; m is an integer of 1 to 3; Y −m is an anionic radical selected from the group consisting of halide, C 1 -C 6 carboxylate, carbonate, hydrocarbonate, sulfate, hydrosulfate, C 1 -C 6 sulfonate, phosphate, hydrophosphate, and dihydrophosphate. Further embodiments include methods of lowering surface tension of a medium comprising contacting the medium with a composition of formula (I), (III), or a mixture thereof.
1. A compound of formula (I):
wherein
A is —F or —CF 3 ;
R f is independently C 1 -C 6 perfluorinated linear or branched alkyl optionally interrupted by one or more oxygens;
R o is a linear or branched aliphatic group of about 10 to about 100 carbon atoms, interrupted by about 5 to about 50 ether oxygens, wherein the ratio of ether oxygen to carbon atoms is about 1:2 to about 1:3; and wherein each carbon atom has at most one ether oxygen atom bonded to it, and covalent bonding between ether oxygen atoms is absent.
2. The compound of claim 1 wherein R o has a molecular weight of about 200 to about 2200 when each valency is occupied by an —NH 2 group and a solubility in water of 1 wt % or higher.
3. The compound of claim 1 wherein R o is a hydrophilic water-solvatable polyoxyalkylene radical of formula (IVa), (IVb), (IVc), or a mixture thereof:
wherein n is a positive integer, and n1 and n2 are each independently a positive integer or zero; said polyoxyalkylene radical having a weight average molecular weight up to about 2200.
4. The compound of claim 1 wherein R f is a C 1 -C 3 perfluorinated linear hydrocarbon.
5. A compound of formula (III)
wherein
m is an integer of 1 to 3
A is —F or —CF 3 ;
R f is independently C 1 -C 6 perfluorinated linear or branched alkyl optionally interrupted by one or more oxygens;
Y −m is an anionic radical selected from the group consisting of halide, C 1 -C 6 carboxylate, carbonate, hydrocarbonate, sulfate, hydrosulfate, C 1 -C 6 sulfonate, phosphate, hydrophosphate, and dihydrophosphate;
R o is a linear or branched aliphatic group of about 10 to about 100 carbon atoms, interrupted by about 5 to about 50 ether oxygens, wherein the ratio of ether oxygen to carbon atoms is about 1:2 to about 1:3; and wherein each carbon atom has at most one ether oxygen atom bonded to it, and covalent bonding between ether oxygen atoms is absent.
6. The compound of claim 5 wherein R o has a molecular weight, when each valency is occupied by an —NH 2 group, of between about 200 to about 2200, and a solubility in water of 1 wt % or higher.
7. The compound of claim 5 wherein R o is a hydrophilic water-solvatable polyoxyalkylene radical of formula (IVa), (IVb), (IVc), or a mixture thereof:
wherein n is a positive integer, and n1 and n2 are each independently a positive integer or zero; said polyoxyalkylene radical having a weight average molecular weight up to about 2200.
8. The compound of claim 5 wherein R f is a C 1 -C 3 perfluorinated linear hydrocarbon.
9. A method of lowering surface tension of a medium comprising contacting the medium with a composition comprising a compound of formula (I)
wherein
A is —F or —CF 3 ;
R f is independently C 1 -C 6 perfluorinated linear or branched alkyl optionally interrupted by one or more oxygens;
R o is a linear or branched aliphatic group of about 10 to about 100 carbon atoms, interrupted by about 5 to about 50 ether oxygens, wherein the ratio of ether oxygen to carbon atoms is about 1:2 to about 1:3; and wherein each carbon atom has at most one ether oxygen atom bonded to it, and covalent bonding between ether oxygen atoms is absent.
10. The method of claim 9 wherein R o has a molecular weight, when each valency is occupied by an —NH 2 group, of between about 200 to about 2200, and a solubility in water of 1 wt % or higher; and R f is a C 1 -C 3 perfluorinated linear hydrocarbon.
11. The method of claim 9 wherein R o is a hydrophilic water-solvatable polyoxyalkylene radical of formula (IVa), (IVb), (IVc), or a mixture thereof:
wherein n is a positive integer, and n1 and n2 are each independently a positive integer or zero; said polyoxyalkylene radical having a weight average molecular weight up to about 2200.
12. The method of claim 9 wherein the medium is a coating composition, latex, polymer, floor finish, ink, emulsifying agent, foaming agent, release agent, repellency agent, flow modifier, film evaporation inhibitor, wetting agent, penetrating agent, cleaner, grinding agent, electroplating agent, corrosion inhibitor, etchant solution, soldering agent, dispersion aid, microbial agent, pulping aid, rinsing aid, polishing agent, personal care composition, drying agent, antistatic agent, floor polish, or bonding agent.
13. A method of lowering surface tension of a medium comprising contacting the medium with a composition comprising a compound of formula (III)
wherein
A is —F or —CF 3 ;
Y −m is an anionic radical selected from the group consisting of halide, C 1 -C 6 carboxylate, carbonate, hydrocarbonate, sulfate, hydrosulfate, C 1 -C 6 sulfonate, phosphate, hydrophosphate, and dihydrophosphate;
R f is independently C 1 -C 6 perfluorinated linear or branched alkyl optionally interrupted by one or more oxygens;
R o is a linear or branched aliphatic group of about 10 to about 100 carbon atoms, interrupted by about 5 to about 50 ether oxygens, wherein the ratio of ether oxygen to carbon atoms is about 1:2 to about 1:3; and wherein each carbon atom has at most one ether oxygen atom bonded to it, and covalent bonding between ether oxygen atoms is absent.
14. The method of claim 13 wherein R o has a molecular weight, when each valency is occupied by an —NH 2 group, of between about 200 to about 2200, and a solubility in water of 1 wt % or higher; and R f is a C 1 -C 3 perfluorinated linear hydrocarbon.
15. The method of claim 13 wherein R o is a hydrophilic water-solvatable polyoxyalkylene radical of formula (IVa), (IVb), (IVc), or a mixture thereof:
wherein n is a positive integer, and n1 and n2 are each independently a positive integer or zero; said polyoxyalkylene radical having a weight average molecular weight up to about 2200.
16. The method of claim 13 wherein the medium is a coating composition, latex, polymer, floor finish, ink, emulsifying agent, foaming agent, release agent, repellency agent, flow modifier, film evaporation inhibitor, wetting agent, penetrating agent, cleaner, grinding agent, electroplating agent, corrosion inhibitor, etchant solution, soldering agent, dispersion aid, microbial agent, pulping aid, rinsing aid, polishing agent, personal care composition, drying agent, antistatic agent, floor polish, or bonding agent.