Compositions containing hydrogen peroxide or substances releasing hydrogen peroxide

Abstract

The invention relates to compositions containing a) one or more substances selected from the group of hydrogen peroxide and substances releasing hydrogen peroxide, b) water, d) one or more substances selected from the group consisting of hydroxypyridones and the salts thereof, characterized in that said compositions do not comprise polymers having thickening properties. The compositions are particularly characterized by the advantageous storage stability thereof.

Claims

1. A composition comprising a) at least one substance selected from the group consisting of hydrogen peroxide and hydrogen peroxide-releasing substances, b) water, and d) at least one substance selected from the group consisting of compounds of the formula (I) and salts thereof ##STR00002## in which R1 is H or a C.sub.1-C.sub.4 alkyl radical and R2 is H, an unsubstituted or halogen-substituted, branched or unbranched C.sub.1-C.sub.20 alkyl radical, an unsubstituted or halogen-substituted C.sub.5-C.sub.8 cycloalkyl radical, an unsubstituted or halogen-substituted C.sub.6-C.sub.10 aryl radical or an unsubstituted or halogen-substituted, branched or unbranched C.sub.7-C.sub.20 aralkyl radical, wherein the composition further comprises active antimicrobial ingredients in amounts from 0.001% to 5.0% by weight, based on the total weight of the composition, with the proviso that the composition does not comprise any polymer having thickening properties.

2. The composition as claimed in claim 1, wherein the at least one substance of component a) is selected from the group consisting of hydrogen peroxide, urea peroxide, perborates, persulfates and mixtures thereof.

3. The composition as claimed in claim 1, wherein the substance of component a) is hydrogen peroxide and the hydrogen peroxide is present in the composition in amounts of 0.5 to 20% by weight based on the total weight of the composition.

4. The composition as claimed in claim 1, wherein the at least one compound of component d) is present in the form of an acid or in the form of an alkali metal, alkaline earth metal, or amine salt thereof.

5. The composition as claimed in claim 1, wherein, in the at least one compound of the formula (I) or in the salts thereof, R1 is methyl and R2 is cyclohexyl or 2,4,4-trimethylpentyl.

6. The composition as claimed in claim 1, which comprises the at least one substance of component d) in amounts of 0.1 ppm to 2% by weight, based on the total weight of the composition.

7. The composition as claimed in claim 6, which comprises the at least one substance of component d) in amounts of 0.5 to 100 ppm, based on the total weight of the composition.

8. The composition as claimed in claim 1, which has a pH of 2 to 11.

9. The composition as claimed in claim 8, which has a pH of 7 to 11.

10. An oxidative cleaner formulation comprising at least one composition according to claim 1.

11. A composition for oxidative bleaching of fibers or textiles comprising at least one composition according to claim 1.

Description

TEST EXAMPLES

Example 1

(1) Hydrogen peroxide solution from Solvay (35% by weight in water) or from Merck (35% by weight in water) was diluted with demineralized water to a hydrogen peroxide content of about 6.0% by weight and adjusted to a pH of 9.0 with sodium hydroxide solution (20% by weight). Further solutions were each additized with 8 ppm of 4-methyl-6-(2,4,4-trimethylpentyl)-1-hydroxy-2-pyridone (additive A, dissolved in propylene glycol). The solutions were stored at room temperature (20 C.) and 40 C. for 1 week and the hydrogen peroxide content was measured before and after storage (see Table 1).

(2) TABLE-US-00002 TABLE 1 Results of the measurement of the hydrogen peroxide content Hydrogen Hydrogen Hydrogen peroxide peroxide peroxide content content content after 1 week after 1 week Hydrogen Additive immediate at 20 C. at 40 C. peroxide A [% by wt.] [% by wt.] [% by wt.] Solvay no 6.3 4.8 <0.1 (35% by wt.) Solvay yes 6.0 6.1 5.9 (35% by wt.) Merck no 5.9 3.9 2.0 (35% by wt.) Merck yes 6.1 6.1 5.8 (35% by wt.)

Example 2

(3) Hydrogen peroxide solution from Solvay (35% by weight in water) or from Merck (35% by weight in water), a solution of sodium C.sub.14-17 alkyl sec-sulfonates (Hostapur SAS 30) and demineralized water were mixed so as to result in a hydrogen peroxide content of about 6.0% by weight and a content of sodium C.sub.14-17 alkyl sec-sulfonates of 5.0% by weight. Thereafter, sodium hydroxide solution (20% by weight) was used to establish a pH of 9.0. Further solutions were each additized with 7 ppm of 4-methyl-6-(2,4,4-trimethylpentyl)-1-hydroxy-2-pyridone (additive A, dissolved in propylene glycol). The solutions were stored at room temperature and 40 C. for 1 week and the hydrogen peroxide content was measured before and after storage (see Table 2).

(4) TABLE-US-00003 TABLE 2 Results of the measurement of the hydrogen peroxide content Hydrogen Hydrogen Hydrogen peroxide peroxide peroxide content content content after 1 week after 1 week Hydrogen Additive immediate at 20 C. at 40 C. peroxide A [% by wt.] [% by wt.] [% by wt.] Solvay no 6.1 3.7 0.1 (35% by wt.) Solvay yes 6.0 6.1 5.8 (35% by wt.) Merck no 5.9 4.2 1.4 (35% by wt.) Merck yes 6.0 6.1 5.2 (35% by wt.)

(5) The results of examples 1 and 2 show that 4-methyl-6-(2,4,4-trimethylpentyl)-1-hydroxy-2-pyridone can significantly enhance the storage stability of hydrogen peroxide solutions at high pH both at room temperature and at 40 C.

FORMULATION EXAMPLES

Formulation Example 1

Prewash Spray for Laundry

(6) TABLE-US-00004 Ingredient % by wt. hydrogen peroxide (35% by wt., aqueous) 10.0 Decyl Glucoside (50% by wt. aqueous solution) 5.0 Coco Glucoside (50% by wt. aqueous solution) 2.0 Hostapur SAS 60 5.0 (Sodium C14-17 Alkyl Sec Sulfonate) 4-methyl-6-(2,4,4-trimethylpentyl)-1-hydroxy-2- 0.0005 pyridone, monoethanolamine salt propylene glycol 1.0 water ad 100
Production:

(7) 4-Methyl-6-(2,4,4-trimethylpentyl)-1-hydroxy-2-pyridone monoethanolamine salt (Octopirox) is dissolved in propylene glycol. The surfactants are dissolved in water, the hydrogen peroxide solution and the propylene glycol solution are introduced, and the mixture is homogenized. The product is adjusted to pH=4.

Formulation Example 2

Stain Remover

(8) TABLE-US-00005 Ingredient % by wt. hydrogen peroxide (35% by wt., aqueous) 10.0 Sodium C14-17 Olefin Sulfonate 5.0 4-methyl-6-(cyclohexyl)-1-hydroxy-2-pyridone 0.0005 propylene glycol 1.0 water ad 100
Production:

(9) 4-Methyl-6-(cyclohexyl)-1-hydroxy-2-pyridone is dissolved in propylene glycol. The surfactant is dissolved in water, the hydrogen peroxide solution and the propylene glycol solution are introduced, and the mixture is homogenized. The product is adjusted to pH=7.

Formulation Example 3

Stain Remover

(10) TABLE-US-00006 Ingredient % by wt. hydrogen peroxide (35% by wt., aqueous) 12.0 Lauryl Glucoside (50% by wt. aqueous solution) 7.0 4-methyl-6-(2,4,4-trimethylpentyl)-1-hydroxy-2- 0.0005 pyridone propylene glycol 1.0 MEA dodecylbenzenesulfonate 6.0 water ad 100
Production:

(11) 4-Methyl-6-(2,4,4-trimethylpentyl)-1-hydroxy-2-pyridone is dissolved in propylene glycol.

(12) The surfactants are dissolved in water, the hydrogen peroxide solution and the propylene glycol solution are introduced, and the mixture is homogenized. The product is adjusted to pH=4.7.