Oral care compositions
Described herein are liquid compositions, comprising an ethoxylated amine of a fatty acid, an organic solvent, and an acid.
1. A liquid composition, comprising:
from 10 weight % to 55 weight % of either 2′-(octadecylimino)bisethanol or N,N,N′-tris(2-hydroxyethyl)-N′-alkyl/alkenyl(C14-C18)-1,3-diaminopropane, based on a total weight of the liquid composition;
from 35 weight % to 75 weight % of organic solvent, based on the total weight of the liquid composition; and
from 0.20 weight % to 25 weight % of acid, based on the total weight of the liquid composition;
wherein the organic solvent comprises propylene glycol; and
wherein the acid is one or more acids selected from the group consisting of malic acid, benzoic acid, mandelic acid, lactic acid, acetic acid, succinic acid, tartaric acid, and citric acid.
2. The liquid composition of claim 1 , wherein the composition comprises 2,2′-(octadecylimino)bisethanol.
3. The liquid composition of claim 1 , wherein the composition comprises N,N,N′-tris(2-hydroxyethyl)-N′-alkyl/alkenyl(C14-C18)-1,3-diaminopropane.
4. The liquid composition of claim 2 , wherein the composition comprises 70% or more of 2,2′-(octadecylimino)bisethanol.
5. The liquid composition of claim 2 , wherein the 2,2′-(octadecylimino)bisethanol is produced from plant-derived stearic acid.
6. The liquid composition of claim 2 , wherein the 2,2′-(octadecylimino)bisethanol is produced by reacting stearamine with ethylene oxide at an ethylene oxide:stearamine ratio of 2.0 to 2.20:1.
7. The liquid composition of claim 1 , wherein the organic solvent consists of propylene glycol.
8. The liquid composition of claim 1 , wherein the liquid composition comprises from 30 weight % to 55 weight % of the 2′-(octadecylimino)bis ethanol or N,N,N′-tris(2-hydroxyethyl)-N′-alkyl/alkenyl(C14-C18)-1,3-diaminopropane, optionally, wherein the liquid composition comprises from 35 weight % to 45 weight % of the organic solvent, and, further optionally, wherein the liquid composition comprises from 5 weight % to 15 weight % of the acid.
9. The liquid composition of claim 1 , wherein the acid is one or more of malic acid, mandelic acid, lactic acid, acetic acid, succinic acid, tartaric acid, and citric acid.
10. The liquid composition of claim 1 , wherein the acid is one or more of malic acid, lactic acid, and tartaric acid.
11. The liquid composition of claim 1 , wherein the acid is malic acid or tartaric acid.
12. The liquid composition of claim 1 , wherein the acid is a combination of malic acid and benzoic acid and/or mandelic acid.
13. The liquid composition of claim 1 , wherein the liquid composition is ethanol-free.
14. The liquid composition of claim 1 , consisting essentially of:
2,2′-(octadecylimino)bisethanol;
propylene glycol; and
an acid selected from malic acid, tartaric acid, or mixtures thereof.
15. The liquid composition of claim 1 , wherein the liquid composition is stable and free of precipitates after two weeks of storage at room temperature.
16. The liquid composition of claim 1 , wherein the liquid composition is stable and free of precipitates after three months of storage at room temperature.