COMPOSITION

Abstract

A liquid detergent composition comprising manganese 1,4,7-triazacyclononane (MnTACN) and derivatives thereof and a polar solvent, wherein the composition is contained in a water-soluble film.

Claims

1. A liquid detergent composition comprising manganese 1,4,7-triazacyclononane (MnTACN) and derivatives thereof and a polar solvent, wherein the composition is contained in a water-soluble film.

2. A composition according to claim 1, wherein the polar solvent is aprotic.

3. A composition according to claim 1 or 2, wherein the polar solvent is selected from one or more of N-Acetylcaprolactam, propylenecarbonate, -valerolactone, cyrene, acetonitrile, -caprolactone, -caprolactam, dimethylsuphoxide, ethylene carbonate, -butyrolactone, -butyrolactone, N-methylpyrrolidone, methyl sulpholane, sulpholane, 2,3-butylene carbonate, nitromethane, 2-pyrrolidone, butadiene sulfone, cyclobutanone, cyclopentanone, ethylene sulphite, glycerol carbonate acetate, N-acetyl piperidine, and/or N-acetyl pyrrolidone.

4. A composition according to any of the preceding claims, wherein the MnTACN is present in a concentration of from 0.1 to 30 mg/mL, based on the total volume of the composition.

5. A composition according to any of the preceding claims, wherein the MnTACN is present in an amount of from 0.1 to 5% by weight, based on the total weight of the composition.

6. A composition according to any of the preceding claims, wherein the polar solvent is present in an amount from 45 to 99.9% by weight, preferably from 70 to 99.5% by weight, based on the total weight of the composition.

7. A composition according to any of the preceding claims; wherein the composition further comprises one or more of a dye and/or material care agent(s).

8. A composition according to any of the preceding claims, wherein the composition contains less than 1% by weight of percarbonate.

9. A composition according to any of the preceding claims, wherein the composition contains less than 1% by weight of water.

10. A composition according to any of the preceding claims, wherein the composition is transparent.

11. A composition according to any of the preceding claims, wherein the water-soluble film is a polyvinyl alcohol (PVOH) film.

12. A composition according to any of the preceding claims, wherein the composition weighs from 0.1 to 3 g, preferably from 0.15 to 1 g.

13. A composition according to any of the preceding claims, wherein the composition is contained within a multi-chamber detergent pouch.

14. A method of making a composition according to any of claims 1 to 13.

15. Use of a composition according to any claims 1 to 13 in an automatic dishwashing process.

Description

EXAMPLES

[0033] Dissolution Trials

[0034] A range of solvents and solvent mixtures were tested to assess their ability to dissolve MnTACN. The solvent compositions as defined in Table 1 were tested by combining 1% by weight MnTACN solution (concentration of 10 mg/mL) with 99% by weight of the solvent compositions.

[0035] Solubility of the red-brown MnTACN complex is indicated by homogeneous colourisation of the solvent and the results are shown in Table 1.

TABLE-US-00001 TABLE 1 MnTACN Solubility Screening Solvent/Solvent mixture Composition (99% by weight of composition) Result 1 Acetic acid Complex not sufficiently soluble 2 2-Methyl tetrahydrofuran Complex not soluble 3 Triethyl 2-acetylcitrate Complex not sufficiently soluble 4 Propylene carbonate Complex soluble 5 N-Acetylcaprolactam Complex soluble 6 N-Acetylcaprolactam:alkoxylated Complex not sufficiently fatty alcohol (1:1) soluble, slightly cloudy 7 N-Acetylcaprolactam:dipropylene Complex not sufficiently glycol (1:1) soluble, slightly cloudy 8 N-Acetylcaprolactam:alkyl Complex not sufficiently polyglucoside (1:1) soluble, slightly cloudy 9 N-Acetylcaprolactam:propylene Complex soluble carbonate (1:1) 10 y-Valerolactone Complex soluble 11 Dimethyl carbonate Complex not soluble 12 Cyrene Complex soluble 13 Ethyl lactate Complex not sufficiently soluble, slightly cloudy 17 2-Hydroxy-N,N-dimethylpropanamide Complex soluble 18 1-methoxy-2-propanol Complex not sufficiently soluble 19 Valerolactone + BHT Complex soluble

[0036] Stability Trials

[0037] Storage stability trials were conducted with the candidates that displayed a suitable solubilising properties above.

[0038] The stability of the solubilized complex was assessed in a glass vial, with the results shown in Table 2.

TABLE-US-00002 TABLE 2 Vial Storage Test Composition 2 week's storage at 5 C. 2 week's storage at 40 C. 4 No change No change 5 No change No Change 9 No change No change 10 No change Slight Darkening 12 No change Brighter/Lighter 13 No change Darkening 17 No change No Change 19 No change No change

[0039] The solutions were placed in PVOH containers to review stability and check any plasticizing effect of the solvent. The results are shown in Table 3.

TABLE-US-00003 TABLE 3 PVOH Storage Test Composition 2 week's storage at 5 C. 2 week's storage at 40 C. 4 No change No change 5 No change Slight Darkening 9 No change Slight Darkening 10 No change Deformed 17 No change Deflation/Leaking, orange discoloration 19 No change Yellow discoloration

[0040] There is therefore provided a solvent system that successfully solubilises MnTACN, is stable in a water-soluble film and provides an additional effect on the wider detergent system.

[0041] The invention is defined by the claims.