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.
Claims8
A compound of the following formula:
- wherein R1 is chosen from hydrogen, an oxygen atom, and C1-C6 alkyl, wherein the C1-C6 alkyl may be substituted with carboxylates, hydroxyls, sulfonyls, or sulfonates;
- n is an integer from 2 to 5 (including 2 and 5);
- R2 is C5-C12 alkyl;
- R3 is C3-C10 alkyl;
- the terminal nitrogen is optionally further substituted with R4, wherein R4 is chosen from hydrogen, an oxygen atom, and C1-C6 alkyl, wherein the C1-C6 alkyl may be substituted with carboxylates, hydroxyls, sulfonyls, or sulfonates;
- and an optional counterion may be associated with the compound and, if present, the counterion may be 4-methylbenzenesulfonate.
A liquid composition comprising:
- a medium;
- and a surfactant of the following formula:
- wherein R1 is chosen from hydrogen, an oxygen atom, and C1-C6 alkyl, wherein the C1-C6 alkyl may be substituted with carboxylates, hydroxyls, sulfonyls, or sulfonates;
- n is an integer from 2 to 5 (including 2 and 5);
- R2 is C5-C12 alkyl;
- R3 is C3-C10 alkyl;
- the terminal nitrogen is optionally further substituted with R4, wherein R4 is chosen from hydrogen, an oxygen atom, and C1-C6 alkyl, wherein the C1-C6 alkyl may be substituted with carboxylates, hydroxyls, sulfonyls, or sulfonates;
- and an optional counterion may be associated with the compound and, if present, the counterion may be 4-methylbenzene sulfonate.
Dependencies are inferred from the claim text.