Mixed fluoroalkyl-alkyl surfactants
AssigneeE.I. du Pont de Nemours and Company
InventorsErick Jose Acosta, Charles Kenneth Taylor
Life of this patent
Estimating the term…
Abstract
A compound of Formula 1 Rf-A-OP(O)(O−M+)(O—RH) Formula 1 wherein Rf is a C2 to C6 linear or branched perfluoroalkyl optionally interrupted by one, two or three ether oxygen atoms; A is (CH2CF2)m(CH2)n—, (CH2)oSO2N(CH3)(CH2)p—, O(CF2)q(CH2)r—, or OCHFCF2OE-; m is 1 to 4; n, o, p, and r are each independently 2 to 20; q is 2; E is a C2 to C20 linear or branched alkyl group optionally interrupted by oxygen, sulfur, or nitrogen atoms; a cyclic alkyl group, or a C6 to C10 aryl group; M is a Group I metal or an ammonium cation (NHxR2y)+ wherein R2 is a C1 to C4 alkyl, x is 1 to 4, y is 0 to 3 and x+y is 4; and RH is a C1 to C20 linear, branched, or cyclic alkyl, or a C6 to C10 aryl, and its use as a surfactant is disclosed.
Claims14
A compound of Formula 1
- Rf-A-OP(O)(O−M+)(O—RH) Formula 1
- wherein
- Rf is a C2 to C6 linear or branched perfluoroalkyl optionally interrupted by one, two or three ether oxygen atoms;
- A is (CH2CF2)m(CH2)n—, (CH2)oSO2N(CH3)(CH2)p—, O(CF2)q(CH2)r—, or OCHFCF2OE-;
- m is 1 to 4;
- n, o, p, and r are each independently 2 to 20;
- q is 2;
- E is a C2 to C20 linear or branched alkyl group optionally interrupted by oxygen, sulfur, or nitrogen atoms;
- a cyclic alkyl group, or a C6 to C10 aryl group;
- M is a Group I metal or an ammonium cation (NHxR2y)+ wherein R2 is a C1 to C4 alkyl, x is 1 to 4, y is 0 to 3 and x+y is 4;
- and
- RH is a C1 to C20 linear, branched, or cyclic alkyl;
- wherein the compound of Formula 1 is a surfactant for aqueous, halocarbon, or hydrocarbon liquid medium.
A method of lowering the surface tension of an aqueous medium comprising contacting the medium with a composition of Formula 1
- Rf-A-OP(O)(O−M+)(O—RH) Formula 1
- wherein
- Rf is a C2 to C6 linear or branched perfluoroalkyl optionally interrupted by one, two or three ether oxygen atoms;
- A is (CH2CF2)m(CH2)n—, (CH2)oSO2N(CH3)(CH2)p—, O(CF2)q(CH2)r—, or OCHFCF2OE-;
- m is 1 to 4;
- n, o, p, and r are each independently 2 to 20;
- q is 2;
- E is a C2 to C20 linear or branched alkyl group optionally interrupted by oxygen, sulfur, or nitrogen atoms;
- a cyclic alkyl group, or a C6 to C10 aryl group;
- M is a Group I metal or an ammonium cation (NHxR2y)+ wherein R2 is a C1 to C4 alkyl, x is 1 to 4, y is 0 to 3 and x+y is 4;
- and
- RH is a C1 to C20 linear, branched, or cyclic alkyl;
- wherein the compound of Formula 1 is a surfactant for aqueous, halocarbon, or hydrocarbon liquid medium.
A method of providing leveling, open time extension, and resistance to blocking to a coated substrate comprising adding to a coating base prior to deposition on the substrate a compound of Formula 1
- Rf-A-OP(O)(O−M+)(O—RH) Formula 1
- wherein
- Rf is a C2 to C6 linear or branched perfluoroalkyl optionally interrupted by one, two or three ether oxygen atoms;
- A is (CH2CF2)m(CH2)n—, (CH2)oSO2N(CH3)(CH2)p—, O(CF2)q(CH2)r—, or OCHFCF2OE-;
- m is 1 to 4;
- n, o, p, and r are each independently 2 to 20;
- q is 2;
- E is a C2 to C20 linear or branched alkyl group optionally interrupted by oxygen, sulfur, or nitrogen atoms;
- a cyclic alkyl group, or a C6 to C10 aryl group;
- M is a Group I metal or an ammonium cation (NHxR2y)+ wherein R2 is a C1 to C4 alkyl, x is 1 to 4, y is 0 to 3 and x+y is 4;
- and
- RH is a C1 to C20 linear, branched, or cyclic alkyl;
- wherein the compound of Formula 1 is a surfactant for aqueous, halocarbon, or hydrocarbon liquid medium.
Dependencies are inferred from the claim text.