DETERGENT COMPOSITIONS

Abstract

A detergent composition for the non-oxidative cleaning of substrate stains, the composition comprising: (b) gluconic acid or salt thereof; (b) an aminocarboxylate; and (c) from 3 to 80% (by weight based on the total weight of the composition) of one or more detersive surfactants.

Claims

1. A detergent composition for the non-oxidative cleaning of substrate stains, the composition comprising: (b) gluconic acid or salt thereof; (b) an aminocarboxylate; and (c) from 3 to 80% (by weight based on the total weight of the composition) of one or more detersive surfactants.

2. A detergent composition according to claim 1, wherein the gluconic acid is D-gluconic acid.

3. A detergent composition according to claim 1, wherein the aminocarboxylate comprises gluconic acid diacetic acid (GLDA).

4. A detergent composition according claim 1, wherein the aminocarboxylate comprises methylglycine diacetic acid (MGDA).

5. A detergent composition according to claim 1, wherein the aminocarboxylate is present in the range of from 0.1-15% wt (by weight based on the total weight of the composition).

6. A detergent composition according to claim 1, wherein the organic acid is present at 0.1-15% wt (by weight based on the total weight of the composition).

7. A composition according to claim 1, further comprising one or more polymeric cleaning boosters.

8. A composition according to claim 1, wherein the composition further comprises an enzyme.

9. A composition according to claim 1 having a pH in the range of 5 to 9, when measured on dilution of the composition to 1% (by weight based on the total weight of the composition) using demineralised water.

10. A method of making a liquid detergent composition, the method comprising the step of incorporating into a liquid detergent composition the following: (a) gluconic acid or salt thereof; (b) an aminocarboxylate; and (c) from 3 to 80% (by weight based on the total weight of the composition) of one or more detersive surfactants.

11. A method for the treatment of a substrate comprising the step of contacting a substrate with a composition of claim 1.

12.-13. (canceled)

Description

EXAMPLES

[0180] All weight percentages are by weight based on total weight unless otherwise specified. Compositions according to the invention are indicated by a number; and comparative examples (not according to the invention) are indicated by a letter.

Protocol for Evaluating Sequestrant Performance for Laundry Detergent Liquid Formulation Colour Stability

[0181] 50 ml of the formulations shown in Table 1 are prepared and stored in screw capped glass jars (60 ml volume, 3.5 cm diameter). Formulations are placed in an oven at 45 C. and stored (in the dark) for 4 weeks. Visual observations of formulation colour stability are made in 60 ml glass jars (3.5 cm diameter) by comparison with freshly prepared samples of the same compositions.

[0182] Colour changes are also quantified spectrophotometrically. UV-Vis absorbance measurements are made using a Cary 400 UV-VIS spectrophotometer using a 1 cm pathlength cuvette at a wavelength of 400 nm.

TABLE-US-00002 TABLE 1 Laundry liquid formulations used in colour stability studies (%) (%) (%) (%) (%) (%) (%) (%) (%) Ingredient A B C D E F G H I Antifoam 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 Fluorescer 0.200 0.200 0.200 0.200 0.200 0.200 0.200 0.200 0.200 Monoethanolamine 5.500 5.500 5.500 5.500 5.500 5.500 5.500 5.500 5.500 LAS acid 9.940 9.940 9.940 9.940 9.940 9.940 9.940 9.940 9.940 Citric acid 2.500 2.500 2.500 2.500 2.500 2.500 2.500 2.500 2.500 Anionic surfactant 7.450 7.450 7.450 7.450 7.450 7.450 7.450 7.450 7.450 Particulate soil 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 cleaning polymer Polyester soil 0.540 0.540 0.540 0.540 0.540 0.540 0.540 0.540 0.540 release polymer Alkyl ether sulfate 7.450 7.450 7.450 7.450 7.450 7.450 7.450 7.450 7.450 ammonium salt Preservative 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.500 Potassium sulfite 0.200 0.200 0.200 0.200 0.200 0.200 0.200 0.200 0.200 Fragrance 1.180 1.180 1.180 1.180 1.180 1.180 1.180 1.180 1.180 Enzymes 1.620 1.620 1.620 1.620 1.620 1.620 1.620 1.620 1.620 D-Gluconic acid 0 1.0 1.0 1.75 0 0 2.5 0 0 MGDA 0 0.75 0 0 1.75 0 0 2.5 0 GLDA 0 0 0.75 0 0 1.75 0 0 2.5 Water To To To To To To To To To 100% 100% 100% 100% 100% 100% 100% 100% 100%

[0183] Formulation colour changes on elevated temperature storage are evaluated after preparation and after aging, for 4 weeks in the dark at 45 C.