Liquid detergent formulation with hydrogen peroxide
A stabilized basic aqueous liquid detergent composition is disclosed. The composition comprises hydrogen peroxide, a hydrogen peroxide stabilizer or a mixture of hydrogen peroxide stabilizers, an anionic surfactant or mixture of anionic surfactants, a non-ionic surfactant or mixture of anionic surfactants, and a builder or a mixture of builders. The composition maintains a homogeneous single phase, maintains active oxygen level, and gives a high level of cleaning performance.
1. A stabilized basic aqueous liquid detergent composition comprising:
a) 0.1 wt % to 15% of hydrogen peroxide;
b) about 10 ppm by weight to about 1 wt % of a stannate stabilizer;
c) at least about 10 ppm by weight of a phosphonic acid chelating agent or a mixture of phosphonic acid chelating agents;
d) at least about 10 ppm by weight of an aromatic chelating agent or a mixture of aromatic chelating agents;
e) optionally, a sequestrant or a mixture of sequestrants;
f) 0.1 wt % to 60 wt % of an anionic surfactant or mixture of anionic surfactants;
g) 0.1 wt % to 60 wt % of a non-ionic surfactant or mixture of anionic surfactants;
e) 0.1 wt % to 60 wt % of a builder or a mixture of builders; and
f) water;
in which:
the phosphonic acid chelating agent or agents, the aromatic chelating agent or agents, and the sequestrant or sequestrants together comprise about 20 ppm by weight to 10 wt % of the composition;
the composition comprises less than about 10 ppm of pyrophosphate;
the composition has a pH greater than 7.0; and
the amount of active oxygen lost when the composition is heated at 85±1° C. for 24 hours is 20% or less.
2. The liquid detergent composition of claim 1 in which the composition comprises:
2 wt % to 8 wt % of the hydrogen peroxide;
about 15 ppm to about 2500 ppm of the stannate stabilizer;
at least about 15 ppm of the phosphonic acid chelating agent or a mixture of phosphonic acid chelating agents;
at least about 15 ppm by weight of the aromatic chelating agent or a mixture of aromatic chelating agents; and
the phosphonic acid chelating agent or agents, the aromatic chelating agent or agents, and the sequestrant or sequestrants together comprise about 30 ppm by weight to 7.5 wt % of the composition.
3. The liquid detergent composition of claim 2 in which the composition comprises:
about 1 wt % to 30 wt % of an anionic surfactant or mixture of anionic surfactants;
about 1 wt % to 30 wt % of a non-ionic surfactant or mixture of anionic surfactants; and
about 1 wt % to 30 wt % of a builder or a mixture of builders.
4. The liquid detergent composition of claim 3 in which the composition has a pH of about 8.0 to about 10.5.
5. The liquid detergent composition of claim 4 in which the composition comprises less than about 1 ppm of pyrophosphate.
6. The liquid detergent composition of claim 5 in which:
the phosphonic acid chelating agent is selected from the group consisting of amino tri(methylene phosphonic acid); diethylene triamine penta(methylene phosphonic acid); hexamethylene diamine tetra(methylene phosphonic acid); bis hexamethylene triamine penta methylene phosphonic acid; 1-hydroxyethylidene-1,1-diphosphonic acid, and mixtures thereof; and
the aromatic chelating agent is selected from the group consisting of salicylic acid, 6-hydroxy-picolinic acid, 8-hydroxy-quinoline, and mixtures thereof.
7. The liquid detergent composition of claim 6 in which the composition has a pH of about 8.0 to about 9.5.
8. The liquid detergent composition of claim 1 in which:
about 20 ppm to about 1000 ppm of the stannate stabilizer;
at least about 20 ppm of the phosphonic acid chelating agent or a mixture of phosphonic acid chelating agents;
at least about 20 ppm by weight of the aromatic chelating agent or a mixture of aromatic chelating agents; and
the phosphonic acid chelating agent or agents, the aromatic chelating agent or agents, and the sequestrant or sequestrants together comprise about 40 ppm by weight to 5.0 wt % of the composition.
9. The liquid detergent composition of claim 8 in which the composition has a pH of 8.0 to 9.5.
10. The liquid detergent composition of claim 9 in which the amount of active oxygen lost when the composition is heated at 85±1° C. for 24 hours is 10% or less.
11. The liquid detergent composition of claim 10 in which:
the phosphonic acid chelating agent is selected from the group consisting of amino tri(methylene phosphonic acid); diethylene triamine penta(methylene phosphonic acid); hexamethylene diamine tetra(methylene phosphonic acid); bis hexamethylene triamine penta methylene phosphonic acid; 1-hydroxyethylidene-1,1-diphosphonic acid, and mixtures thereof; and
the aromatic chelating agent is selected from the group consisting of salicylic acid, 6-hydroxy-picolinic acid, 8-hydroxy-quinoline, and mixtures thereof.
12. The liquid detergent composition of claim 11 in which:
about 50 ppm to about 500 ppm of the stannate stabilizer;
at least about 40 ppm of the phosphonic acid chelating agent or a mixture of phosphonic acid chelating agents;
at least about 40 ppm by weight of the aromatic chelating agent or a mixture of aromatic chelating agents; and
the phosphonic acid chelating agent or agents, the aromatic chelating agent or agents, and the sequestrant or sequestrants together comprise about 80 ppm by weight to 2.5 wt % of the composition.
13. The liquid detergent composition of claim 12 in which the composition comprises about 1 wt % to 30 wt % of an anionic surfactant or mixture of anionic surfactants; about 1 wt % to 30 wt % of a non-ionic surfactant or mixture of anionic surfactants; and about 1 wt % to 30 wt % of a builder or a mixture of builders.
14. The liquid detergent composition of claim 13 in which the composition comprises:
about 60 ppm to about 200 ppm of the stannate stabilizer; and
the amount of active oxygen lost when the composition is heated at 85±1° C. for 24 hours is 8% or less.
15. The liquid detergent composition of claim 14 in which the amount of active oxygen lost when the composition is heated at 85±1° C. for 24 hours is 5% or less.
16. The liquid detergent composition of claim 1 in which the amount of active oxygen lost when the composition is heated at 85±1° C. for 24 hours is 5% or less.
17. A method of cleaning a substrate, the method comprising the steps of:
(1) applying a stabilized basic aqueous liquid detergent composition to a substrate, the composition comprising:
a) 0.1 wt % to 15% of hydrogen peroxide;
b) about 10 ppm by weight to about 1 wt % of a stannate stabilizer;
c) at least about 10 ppm by weight of a phosphonic acid chelating agent or a mixture of phosphonic acid chelating agents;
d) at least about 10 ppm by weight of an aromatic chelating agent or a mixture of aromatic chelating agents;
e) optionally, a sequestrant or a mixture of sequestrants;
f) 0.1 wt % to 60 wt % of an anionic surfactant or mixture of anionic surfactants;
g) 0.1 wt % to 60 wt % of a non-ionic surfactant or mixture of anionic surfactants;
e) 0.1 wt % to 60 wt % of a builder or a mixture of builders; and
f) water;
in which:
the phosphonic acid chelating agent or agents, the aromatic chelating agent or agents, and the sequestrant or sequestrants together comprise about 20 ppm by weight to 10 wt % of the composition;
the composition comprises less than about 10 ppm of pyrophosphate;
the composition has a pH greater than 7.0; and
the amount of active oxygen lost when the composition is heated at 85±1° C. for 24 hours is 20% or less;
(2) removing the composition from the substrate.
18. The method of claim 17 in which the substrate is a fabric.
19. The method of claim 18 in which in which the composition has a pH of about 8.0 to about 9.5.
20. The method of claim 19 in which:
the composition comprises about 1 wt % to 30 wt % of an anionic surfactant or mixture of anionic surfactants; about 1 wt % to 30 wt % of a non-ionic surfactant or mixture of anionic surfactants; about 1 wt % to 30 wt % of a builder or a mixture of builders; about 50 ppm to about 500 ppm of the stannate stabilizer, at least about 40 ppm of the phosphonic acid chelating agent or a mixture of phosphonic acid chelating agents, and at least about 40 ppm by weight of the aromatic chelating agent or a mixture of aromatic chelating agents; and
the phosphonic acid chelating agent or agents, the aromatic chelating agent or agents, and the sequestrant or sequestrants together comprise about 80 ppm by weight to 2.5 wt % of the composition.
21. The method of claim 20 in which:
the phosphonic acid chelating agent is selected from the group consisting of amino tri(methylene phosphonic acid); diethylene triamine penta(methylene phosphonic acid); hexamethylene diamine tetra(methylene phosphonic acid); bis hexamethylene triamine penta methylene phosphonic acid; 1-hydroxyethylidene-1,1-diphosphonic acid, and mixtures thereof; and the aromatic chelating agent is selected from the group consisting of salicylic acid, 6-hydroxy-picolinic acid, 8-hydroxy-quinoline, and mixtures thereof.
22. The method of claim 21 in which the composition comprises less than about 1 ppm of pyrophosphate.
23. The method of claim 22 in which the composition comprises about 60 ppm to about 200 ppm of the stannate stabilizer; at least about 40 ppm of the phosphonic acid chelating agent or a mixture of phosphonic acid chelating agents; at least about 40 ppm by weight of the aromatic chelating agent or a mixture of aromatic chelating agents; and the phosphonic acid chelating agent or agents, the aromatic chelating agent or agents, and the sequestrant or sequestrants together comprise about 80 ppm by weight to 2.5 wt % of the composition.
24. The method of claim 23 in which the amount of active oxygen lost when the composition is heated at 85±1° C. for 24 hours is 5% or less.
25. The method of claim 17 in which the amount of active oxygen lost when the composition is heated at 85±1° C. for 24 hours is 5% or less.