Branched amino acid surfactants
AssigneeAdvanSix Resins & Chemicals LLC
InventorsEdward Asirvatham, Andrei Honciuc, Voichita Mihali
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Abstract
The present disclosure provides derivatives of amino acids that have branched alkyl structures and surface-active properties. The amino acid can be naturally-occurring or synthetic, or they may be obtained via a ring-opening reaction of a lactam, such as caprolactam. The amino acid may be functionalized to form a compound that is surface-active and have advantageous surfactant characteristics. The compounds of the present disclosure have low critical micelle concentrations (CMC) as well as superior ability to lower the surface tension of a liquid.
Claims19
A compound of the following formula:
- wherein R1 is selected from the group consisting of hydrogen, an oxygen atom, and a substituted or unsubstituted C1-C6 alkyl, wherein the C1-C6 alkyl comprises a group selected from the group consisting of carboxylates, hydroxyls, sulfonyls, or sulfonates;
- n is an integer from 2 to 5;
- R2 is C5 or C6 alkyl;
- R3 is C3 or C4 alkyl;
- the terminal nitrogen is optionally further substituted with R4, wherein R4 chosen from hydrogen, an oxygen atom, and a substituted or unsubstituted C1-C6 alkyl, wherein the substituted C1-C6 alkyl comprises a group selected from the group consisting of carboxylates, hydroxyls, sulfonyls, or sulfonates;
- and if R4 is present then the compound comprises a counterion selected from the group consisting of chloride, bromide, iodide, and 4-methylbenzenesulfonate.
A compound of the following formula:
- wherein le is selected from the group consisting of an oxygen atom, and a substituted or unsubstituted C1-C6 alkyl, wherein the substituted C1-C6 alkyl comprises a group selected from the group consisting of carboxylates, hydroxyls, sulfonyls, or sulfonates;
- n is an integer from 2 to 5;
- R2 is C5-C12 alkyl;
- R3 is C3-C10 alkyl;
- the terminal nitrogen is optionally further substituted with R4, wherein R4 chosen from an oxygen atom, and a substituted or unsubstituted C1-C6 alkyl, wherein the substituted C1-C6 alkyl comprises a group selected from the group consisting of carboxylates, hydroxyls, sulfonyls, or sulfonates;
- and if R4 is present then the compound comprises a counterion selected from the group consisting of chloride, bromide and iodide.
A liquid composition comprising:
- a medium;
- and
- a surfactant of the following formula:
- wherein R1 is selected from the group consisting of hydrogen, an oxygen atom, and a substituted or unsubstituted C1-C6 alkyl, wherein the substituted C1-C6 alkyl comprises a group selected from the group consisting of carboxylates, hydroxyls, sulfonyls, or sulfonates;
- n is an integer from 2 to 5;
- R2 is C5 or C6 alkyl;
- R3 is C3 or C4 alkyl;
- the terminal nitrogen is optionally further substituted with R4, wherein R4 chosen from hydrogen, an oxygen atom, and a substituted or unsubstituted C1-C6 alkyl, wherein the substituted C1-C6 alkyl comprises a group selected from the group consisting of carboxylates, hydroxyls, sulfonyls, or sulfonates;
- and if R4 is present then the compound comprises a counterion selected from the group consisting of chloride, bromide, iodide, and 4-methylbenzenesulfonate.
A liquid composition comprising:
- a medium;
- and
- a surfactant of the following formula:
- wherein le is selected from the group consisting of an oxygen atom, and a substituted or unsubstituted C1-C6 alkyl, wherein the substituted C1-C6 alkyl comprises a group selected from the group consisting of carboxylates, hydroxyls, sulfonyls, or sulfonates;
- n is an integer from 2 to 5;
- R2 is C5 or C6 alkyl;
- R3 is C3 or C4 alkyl;
- the terminal nitrogen is optionally further substituted with R4, wherein R4 chosen from an oxygen atom, and a substituted or unsubstituted C1-C6 alkyl, wherein the substituted C1-C6 alkyl comprises a group selected from the group consisting of carboxylates, hydroxyls, sulfonyls, or sulfonates;
- and if R4 is present then the compound comprises a counterion selected from the group consisting of chloride, bromide and iodide.
Dependencies are inferred from the claim text.