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;
a de-foaming agent, wherein the de-foaming agent is a diol, a triol, or a combination thereof; and
a fatty alcohol ethoxylate (RO—(CH 2 CH 2 O) n —H).
2 . The composition of claim 1 , wherein the alkyl isethionate is selected from the group consisting of sodium lauroyl methyl isethionate, ammonium cocoyl isethionate, sodium cocoyl isethionate, sodium hydrogenated cocoyl methyl isethionate, sodium lauroyl isethionate, sodium myristoyl isethionate, sodium oleoyl isethionate, sodium oleoyl methyl isethionate, sodium palm kerneloyl isethionate, sodium stearoyl methyl isethionate, sodium isethionate, dibromopropamidine diisethionate, hexamidine diisethionate, sodium methyl isethionate, and combinations thereof.
3 . The composition of claim 1 , which further includes a soluble chloride or carbonate salt, or a combination thereof.
4 . The composition of claim 1 , wherein the weight-percentage of de-foaming agent can be proportional to the weight-percentage of alkyl isethionate, where the ratio of fatty acyl isethionate to de-foaming agent can be in the range of about 50:1 to about 1:2.
5 . The composition of claim 1 , further comprising a coconut fatty acid.
6 . The composition of claim 1 , further comprising a cleaning enzyme.
7 . The composition of claim 1 , further comprising deionized water.
8 . The composition of claim 7 , further comprising citric acid, wherein the laundry detergent composition has a pH of less than 7.0.
9 . The composition of claim 1 , further comprising at least one of a thickener, a preservative, a colorant, a fragrance, and a stabilizer.
10 . The composition of claim 9 , further comprising at least one additional non-isethionate surfactant.
11 . A laundry detergent composition, comprising:
an alkyl isethionate;
one or more de-foaming agent(s) in the range of about 1 wt. % to about 3% wt. % of the composition; and
a fatty alcohol ethoxylate (RO—(CH 2 CH 2 O) n —H).
12 . The composition of claim 11 , wherein the ratio of alkyl isethionate to de-foaming agent is in the range of about 50:1 to about 1:1.
13 . The composition of claim 11 , 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 selected from the group consisting of glycerin, propane 1,3-diol, potassium carbonate, and calcium chloride.
14 . The composition of claim 11 , further comprising a cleaning enzyme selected from the group consisting of protease, amylase, pectinase, lipase, and combinations thereof.
15 . The composition of claim 11 , 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.
16 . The composition of claim 11 , 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.
17 . The composition of claim 11 , further comprising one or more alkyl polyglycosides (APGs), one or more detergent builders, and one or more anti-redeposition agents.
18 . 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, and a propanediol to the heated deionized water in the vessel.
19 . The method of claim 18 , wherein the fatty alcohol ethoxylate, alkyl isethionate, and propanediol are added sequentially.
20 . The method of claim 18 , further comprising cooling the composition to about 35° C., and adding a cleaning enzyme and citric acid after cooling.