Laundry detergent compositions
A laundry detergent composition including an alkyl isethionate and a de-foaming agent.
1. A laundry detergent composition, comprising:
an alkyl isethionate selected from the group consisting of sodium lauroyl methyl isethionate, ammonium cocoyl isethionate, sodium hydrogenated cocoyl methyl isethionate, sodium lauroyl isethionate, sodium myristoyl isethionate, sodium oleoyl isethionate, sodium oleoyl methyl isethionate, and combinations thereof;
a de-foaming agent, wherein the de-foaming agent is a diol, a triol, or a combination thereof; and
a coconut fatty acid.
2. The composition of claim 1 , further comprising a soluble chloride, salt a carbonate salt, or a combination thereof.
3. The composition of claim 1 , wherein the weight-percentage of de-foaming agent is proportional to the weight-percentage of alkyl isethionate, where the ratio of fatty acyl isethionate to de-foaming agent is in the range of about 50:1 to about 1:2.
4. The composition of claim 1 , further comprising a fatty alcohol ethoxylate (RO—(CH 2 CH 2 O) n —H).
5. The composition of claim 4 , further comprising a cleaning enzyme.
6. The composition of claim 1 , further comprising deionized water.
7. The composition of claim 6 , further comprising citric acid, wherein the laundry detergent composition has a pH of less than 7.0.
8. The composition of claim 7 , further comprising at least one of a thickener, a preservative, a colorant, a fragrance, and a stabilizer.
9. The composition of claim 8 , further comprising at least one additional non-isethionate surfactant.
10. A laundry detergent composition, comprising:
an alkyl isethionate in the range of about 0.1 wt. % to about 99.5 wt. %;
one or more de-foaming agent(s) in the range of about 1 wt. % to about 3 wt. % of the composition, wherein the de-foaming agent is a diol, a triol, or a combination thereof; and
a coconut fatty acid.
11. The composition of claim 10 , wherein the ratio of alkyl isethionate to de-foaming agent is in the range of about 50:1 to about 1:1.
12. The composition of claim 10 , wherein the alkyl isethionate is sodium lauroyl methyl isethionate in the range of about 5 wt. % to about 25 wt. %; and the de-foaming agent is glycerin in the range of about 0.1 wt. % to about 10 wt. %, and propane 1,3-diol in the range of about 0.01 wt. % to about 5 wt. % of the composition.
13. The composition of claim 12 , further comprising a cleaning enzyme selected from the group consisting of protease, amylase, pectinase, lipase, and combinations thereof.
14. The composition of claim 10 , further comprising a weak organic acid in a concentration to provide a pH in the range of 4.0 to about 6.0 to the composition.
15. The composition of claim 10 , wherein the composition has a viscosity in the range of about 1000 centipoises (cps) to about 10,000 cps when measured at a temperature of 25° C.
16. The composition of claim 10 , further comprising one or more alkyl polyglycosides (APGs), one or more detergent builders, and one or more anti-redeposition agents.
17. A method of preparing a laundry detergent composition, comprising:
heating deionized water to about 60° C. in a mixing vessel; and
adding a fatty alcohol ethoxylate, an alkyl isethionate, glycerol, a coconut fatty acid, a propanediol, and calcium chloride to the heated deionized water in the vessel.
18. The method of claim 17 , wherein the fatty alcohol ethoxylate, alkyl isethionate, glycerol, coconut fatty acid, propanediol, and calcium chloride are added sequentially.
19. The method of claim 17 , further comprising cooling the composition to about 35° C., and adding a cleaning enzyme and citric acid after cooling.