CLEANING COMPOSITION COMPRISING A BLEACH CATALYST AND CARBOXYMETHYLCELLULOSE

Abstract

Disclosed is a cleaning composition containing a metal-containing bleach catalyst, a carboxymethylcellulose (CMC) and further commonly used cleaning composition ingredients such as a builder, a surfactant, polymers/cobuilders, and an enzyme. Preferably, the cleaning composition does not contain a bleach activator such as tetraacetylethylenediamine (TAED). Preferably, the metal-containing bleach catalyst contained in the cleaning composition is a cobalt (Co) containing bleach catalyst or a manganese (Mn) containing bleach catalyst. In the cleaning composition, the carboxymethylcellulose is preferably present in an amount of at least 0.02% (w/w), preferably at least 0.05% (w/w) relative to total amount of the cleaning composition.

Claims

1. A cleaning composition comprising a metal-containing bleach catalyst and carboxymethylcellulose (CMC).

2. The cleaning composition according to claim 1, wherein the composition doesn't comprise a bleach activator.

3. The cleaning composition according to claim 1, further comprising at least one type of a builder, at least one type of a surfactant, at least one polymers/cobuilders and at least one enzyme.

4. The cleaning composition according to claim 1, wherein the at least one metal-containing bleach catalyst is a cobalt (Co) containing bleach catalyst or a manganese (Mn) containing bleach catalyst.

5. The cleaning composition according to claim 1, wherein the beach catalyst is present in an amount of at least 0.002 wt.-%, preferably at least 0.004 wt.-%, more preferably from 0.008 to 0.23 wt.-%, more preferably from 0.012 to 0.15 wt.-%, even more preferably from 0.016 to 0.12 wt.-%, most preferably from 0.016 to 0.08 wt.-% relative to total amount of the cleaning composition.

6. The cleaning composition according to claim 1, wherein the carboxymethylcellulose is present in an amount of at least 0.02% (w/w), preferably at least 0.05% (w/w) relative to total amount of the cleaning composition, preferably in a range of 0.05 to 5% (w/w), more preferred in a range of 0.1 to 4%, even more preferred in a range of 0.15 to 3% (w/w) relative to total amount of the cleaning composition.

7. The cleaning composition according to claim 1, wherein the carboxymethylcellulose has an average degree of substitution (ds) of at least 0.1, preferably between 0.1 to 2.5, preferably between 0.2 and 2.0, more preferably between 0.3 and 1.5 and most preferably between 0.4 and 1.0.

8. The cleaning composition according to claim 1, comprising the bleach catalyst and the carboxymethylcellulose in a form of a co-granulate.

9. The cleaning composition according to claim 3, comprising the bleach catalyst and the at least one enzyme(s) in a form of a co-granulate.

10. The cleaning composition according to claim 3, wherein the at least one enzyme is selected from the group consisting of amylases, lipases, glucooxidases, pectinases, proteases, cellulases, mannanase, peroxidase, oxidase, xylanase, pullulanase, glucanase, cutinase, hemicellulases, glucoamylases, phospholipases, esterases, keratanases, reductases, phenoloxidases, lipoxygenases, ligninases, tannases, pentosanases, malanases, arabinosidases, hyaluronidase, chondroitinase laccase and a mixture thereof.

11. The cleaning composition according to claim 1, wherein the cleaning composition is a dishwashing composition.

12. The cleaning composition according to claim 1, wherein the cleaning composition comprises the bleach catalyst and the carboxymethylcellulose, 0.1-90 wt.-% builder, 0.1-10 wt.-% nonionic surfactant, preferably a low-foaming non-ionic surfactant, 1-40 wt.-% of sodium percarbonate or sodium perborate, and 0.1-20 wt.-% polymer relative to total amount of the cleaning composition.

13. A method for cleaning tableware in an automatic dishwashing appliance, said method comprising treating soiled tableware in an automatic dishwasher with the cleaning composition according to claim 1 or a solution comprising said cleaning composition according to claim 1.

14. A method for cleaning tableware, comprising: adding the cleaning composition according to claim 1 into an automatic dishwashing appliance, and contacting the cleaning composition to soiled tableware in the automatic dishwashing appliance.

15. The cleaning composition according to claim 3, further comprising non-ionic and/or anionic surfactants.

16. The cleaning composition according to claim 1, wherein the metal-containing bleach catalyst is Mn.sup.IV.sub.2(-O).sub.3(1,4,7-trimethyl-1,4,7-triazacyclononane).sub.2-(PF.sub.6).sub.2 (MnTACN).

17. The cleaning composition according to claim 3, wherein the at least one enzyme is selected from the group consisting of proteases, lipases, cellulases, amylases and a mixture thereof.

18. The cleaning composition according to claim 3, wherein the at least one enzyme is a protease.

19. The cleaning composition according to claim 1, wherein the cleaning composition is an automatic dishwashing composition.

Description

EXAMPLES

[0152] To compare the remainder of solid material in waste water or the filter system of modern automatic dishwashing machines, commonly used cleaning compositions (not yet comprising metal bleach catalyst, CMC and TAED) are supplemented either with a bleach catalyst and CMC as shown below, or with a granulate particle according to the co-pending European patent application with the application number 14 176 133.8.

[0153] The basic cleaning formulation used in these tests represents standard modern cleaning compositions without any bleach catalyst, CMC and bleach activator, supplemented by the further ingredients as shown below in the tables. Thus, the ingredients bleach catalyst or enzyme-bleach catalyst granulate and CMC are supplemented by the addition of a standard cleaning composition resulting in 19 g in total.

[0154] The basic cleaning composition (in the below tables basic ADD) comprised the following ingredients: sodium tripolyphosphate, sodium carbonate, disilicate, sodium percarbonate, acrylic acid/sulphonated copolymer, acrylic based polymer, phosphonate, carboxy methyl innulin, modified fatty alcohol polyglycolether, amylase granulate, protease granulate, zinc salt, benzotriazole, dye, poly ethylene glycol and perfume.

[0155] Cleaning compositions were used in an automatic dishwasher (Miele G 1222 SC (GSL)) at a cleaning temperature of 65 C. using water with a hardness of 21 dH. Each dosage used as cleaning composition was 19 g per wash with a ballast soil of 25 g. The solid material in waste water was considered by visual inspection of the fine filter of the dishwashing machine after the below defined number of wash cycles.

[0156] Composition of Ballast Soil:

TABLE-US-00001 Tomato Ketchup 100.0 g Mustard 100.0 g Gravy 100.0 g Potato starch 20.0 g Benzoic acid 4.0 g Milk 200.0 g Tab water 818.0 g Egg-yolk 240.0 g Margarine 400.0 g

Example 1

[0157] Amounts in the tables are given in %, if not otherwise defined

[0158] 100 repetitions (wash cycles) in GSL1222

TABLE-US-00002 Composition A B C Basic ADD 100 96.3 100 MnTACN 0 0 6.6 mg TAED (100% act.) 0 3.4 0 CMC 0 0.3 0 TOTAL 100 100 100 Residues on filter Yes No Yes

[0159] 30 repetitions (wash cycles) in GSL1222

TABLE-US-00003 Composition D E F G H I Basic ADD 100 99.9 99.7 99.1 100 100 MnTACN 4 mg 4 mg 4 mg 4 mg 0 0 CMC 0 0.1 0.3 0.9 0 0.3 TAED (100% act) 0 0 0 0 3.2 3.2 TOTAL 100 100 100 100 103.2 103.5 Residues on filter Yes No No No Yes No