Composition for cleaning surfaces

Abstract

The present invention relates to a composition for cleaning surfaces and/or for detecting organic substances in a solution or on a surface, comprising a) at least one salt of the permanganic acid, ferric acid and/or chromic acid, b) at least one organic phosphonate and c) at least one persulphate,
wherein the at least one organic phosphonate has a general formula (I) ##STR00001##
wherein R.sup.1 is an organic moiety, X.sup.1 is OH or OM.sub.1 and X.sup.2 is OH or OM.sub.2, wherein M.sub.1 and M.sub.2 represent an alkali metal ion or ammonium ion, wherein the organic moiety R.sup.1 is a mono-substituted or multiple-substituted or unsubstituted C.sub.1-C.sub.12 alkyl moiety, C.sub.3-C.sub.10 cycloalkyl moiety or C.sub.6-C.sub.14 aryl moiety, wherein the organic moiety may be attached to 1 to 3 further phosphonate groups of the general formula (I).

Claims

1. A composition for cleaning surfaces and/or for detecting organic substances in a solution or on a surface, consisting essentially of: a) at least one alkali salt selected from the group consisting of potassium permanganate, potassium ferrate, potassium dichromate and combinations thereof b) at least one organic phosphonate, c) at least one persulphate, and d) at least one alkali hydroxide, wherein the at least one organic phosphonate is selected from the group consisting of 1-hydroxy ethane-(1,1-diphosphonic acid), 2-phosphono-butane-1,2,4-tricarboxylic acid, and a salt thereof.

2. The composition according to claim 1, wherein the at least one persulphate is a salt of peroxo-disulphuric acid or of peroxo-mono-sulphuric acid.

3. The composition according to claim 1, wherein the at least one persulphate is selected from the group consisting of sodium peroxo-disulphate, potassium peroxo-disulphate, ammonium peroxo-disulphate, potassium peroxo-monosulphate, and combinations thereof.

4. A composition for cleaning surfaces and/or for detecting organic substances in a solution or on a surface, consisting essentially of: a) at least one alkali salt selected from the group consisting of potassium permanganate, potassium ferrate, potassium dichromate and combinations thereof b) at least one organic phosphonate, c) at least one persulphate, d) at least one alkali hydroxide, and e) at least one calcium salt, wherein the at least one organic phosphonate is selected from the group consisting of 1-hydroxy ethane-(1,1-diphosphonic acid), 2-phosphono-butane-1,2,4-tricarboxylic acid, and a salt thereof.

5. The composition according to claim 1, wherein the composition comprises the at least one potassium permanganate, potassium ferrate, or potassium dichromate at a weight ratio to the at least one organic phosphonate of 1:50 to 1:500.

6. The composition according to claim 1, wherein the composition is an aqueous composition.

7. The composition according to claim 6, wherein the composition comprises more than 50% by weight, water.

8. The composition according to claim 6, wherein the aqueous composition further comprises 0.1% by weight to 2% by weight, of at least one further oxidizing agent.

9. The composition according to claim 6, wherein the aqueous composition comprises 0.01% by weight to 1% by weight, of the at least one organic phosphonate.

10. The composition according to claim 4, wherein the composition comprises 0.1% by weight to 3% by weight, of the at least one calcium salt.

11. The composition according to claim 1, wherein the composition is substantially free of water.

12. The composition according to claim 1, wherein the composition comprises less than 20% by weight, water.

13. The composition according to claim 1, wherein the at least one alkali hydroxide is NaOH, KOH or LiOH.

14. The composition according to claim 6, wherein the aqueous composition comprises 0.1% by weight to 5% by weight, of the at least one alkali hydroxide.

Description

EXAMPLES

Example 1

Stability of Potassium Permanganate Containing Compositions

(1) Compositions and Experimental Design:

(2) In order to investigate the stability of permanganate in potassium manganate containing compositions, there were prepared various compositions:

(3) Composition A:

(4) 0.04 g potassium permanganate 2 g 1-hydroxyethane-(1,1-diphosphonic acid) (HEDP) 996.4 g water
Composition B: 0.04 g potassium permanganate 2 g 2-phosphono-butane-1,2,4-tricarboxylic acid (PBTC) 996.4 g water
Composition C: 0.04 g potassium permanganate 2 amino-tris (methylene phosphonic acid) (ATMP) 996.4 g water
Composition D: 0.04 g potassium permanganate 2 g diethylene triamine penta (methylene phosphonic acid) (DTPMP) 996.4 g water
Composition E: 0.04 g potassium permanganate 2 g ethylene diamine tetra (methylene phosphonic acid) (EDTMP) 996.4 g water
Composition F: 0.04 g potassium permanganate 2 g 1-hydroxyethane-(1,1-diphosphonic acid) (HEDP) 5 g NaOH 991.4 g water
Composition G: 0.04 g potassium permanganate 2 g 2-phosphono butane-1,2,4-tricarboxylic acid (PBTC) 5 g NaOH 991.4 g water
Composition H: 0.04 g potassium permanganate 2 amino-tris (methylene phosphonic acid) (ATMP) 5 g NaOH 991.4 g water
Composition I: 0.04 g potassium permanganate 2 g diethylene triamine penta (methylene phosphonic acid) (DTPMP) 5 g NaOH 991.4 g water
Composition J: 0.04 g potassium permanganate 2 g ethylene diamine tetra (methylene phosphonic acid) (EDTMP) 5 g NaOH 991.4 g water
Composition K: 0.04 g potassium permanganate 2 g 1-hydroxyethane-(1,1-diphosphonic acid) (HEDP) 5 g NaOH 5 g sodium peroxo-disulphate 986.4 g water
Composition L: 0.04 g potassium permanganate 2 g 2-phosphono-butane-1,2,4-tricarboxylic acid (PBTC) 5 g NaOH 5 g sodium peroxo-disulphate 986.4 g water
Composition M: 0.04 g potassium permanganate 2 amino-tris (methylene phosphonic acid) (ATMP) 5 g NaOH 5 g sodium peroxo-disulphate 986.4 g water
Composition N: 0.04 g potassium permanganate 2 g diethylene triamine penta (methylene phosphonic acid) (DTPMP) 5 g NaOH 5 g sodium peroxo-disulphate 986.4 g water
Composition O: 0.04 g potassium permanganate 2 g ethylene diamine tetra (methylene phosphonic acid) (EDTMP) 5 g NaOH 5 g sodium peroxo-disulphate 986.4 g water
Comparative Composition 1: 0.04 g potassium permanganate 2 g 1-hydroxyethane-(1,1-diphosphonic acid) (HEDP) 5 g NaOH 5 g hydrogen peroxide 986.4 g water
Comparative Composition 2: 0.04 g potassium permanganate 2 g 2-phosphono-butane-1,2,4-tricarboxylic acid (PBTC) 5 g NaOH 5 g hydrogen peroxide 986.4 g water
Comparative Composition 3: 0.04 g potassium permanganate 2 amino-tris (methylene phosphonic acid) (ATMP) 5 g NaOH 5 g hydrogen peroxide 986.4 g water
Comparative Composition 4: 0.04 g potassium permanganate 2 g diethylene triamine penta (methylene phosphonic acid) (DTPMP) 5 g NaOH 5 g hydrogen peroxide 986.4 g water
Comparative Composition 5: 0.04 g potassium permanganate 2 g ethylene diamine tetra (methylene phosphonic acid) (EDTMP) 5 g NaOH 5 g hydrogen peroxide 986.4 g water

(5) The components of the compositions A to O and of the comparative compositions 1 to 5 were mixed and dissolved in water. Subsequently, the compositions were incubated at 40 C. for a total of 60 minutes in a closed vessel. Within the first 30 minutes, there was measured, respectively after 5 minutes of incubation, the absorption of the aqueous compositions at 425 nm and at 580 nm (absorption maximum of permanganate). The absorption decrease of the measured compositions at 580 nm shows the reduction of potassium permanganate in the solution. After 30 minutes, the measurement interval was extended to 10 minutes. The faster the decrease of the absorption of the compositions and, hence, the reduction of the potassium permanganate therein is realized, the more unsuitable are these to be used in the determination of the presence of organic compounds in samples. The absorption at minute 0 of each composition was set with 100%, with the result of the absorption measurements at the respective time points being correlated with those at minute 0.

(6) Results:

(7) TABLE-US-00001 TABLE A Absorption of the compositions A to E at 580 nm, wherein the absorption values at minute 0 were set with 100% and the further measurement results of the examination were correlated accordingly (mean value of three independent measurements). Measurement time Composition point [min] A B C D E 0 100% 100% 100% 100% 100% 5 98.7% 99.1% 91.9% 93.5% 92.2% 10 95.3% 97.2% 82.2% 87.0% 85.1% 15 93.1% 94.7% 70.7% 72.2% 69.3% 20 91.9% 92.8% 63.1% 62.8% 63.6% 25 87.1% 87.9% 55.8% 53.7% 56.8% 30 85.0% 84.3% 50.2% 48.3% 47.9% 40 82.6% 82.1% 41.0% 42.4% 41.5% 50 81.1% 80.3% 35.9% 36.8% 37.1% 60 79.9% 78.1% 31.2% 30.9% 29.3%

(8) As there were present alkali hydroxides in many cleaning solutions, which provide a more efficient cleaning, there was investigated whether the presence of NaOH has an impact on the reduction of potassium permanganate.

(9) TABLE-US-00002 TABLE B Absorption of the compositions F to J at 580 nm, wherein the absorption values at minute 0 were set with 100% and the further measurement results of the examination were correlated accordingly (mean value of three independent measurements). Measurement time Composition point [min] F G H I J 0 100% 100% 100% 100% 100% 5 99.1% 98.2% 93.2% 91.2% 94.4% 10 96.8% 97.1% 87.4% 86.3% 89.2% 15 94.1% 93.2% 80.1% 72.8% 71.3% 20 92.4% 91.6% 72.8% 62.9% 66.4% 25 89.3% 88.9% 65.0% 53.4% 57.6% 30 87.2% 86.6% 59.7% 48.6% 46.5% 40 85.6% 85.4% 46.5% 42.5% 43.4% 50 83.7% 82.7% 38.4% 36.2% 35.7% 60 80.8% 79.9% 31.3% 30.1% 30.8%

(10) Cleaning solutions or compositions, respectively, may further include further oxidizing agents with inorganic peroxidases and persulphates. There was further analysed the impact of such oxidizing agents on the stability of potassium permanganate.

(11) TABLE-US-00003 TABLE C Absorption of the compositions K to O at 580 nm, wherein the absorption values at minute 0 were set with 100% and the further measurement results of the examination were correlated accordingly (mean value of three independent measurements). Measurement time Composition point [min] K L M N O 0 100% 100% 100% 100% 100% 5 97.2% 99.7% 90.4% 91.7% 92.6% 10 96.4% 96.6% 79.6% 86.6% 89.3% 15 93.9% 95.4% 71.3% 78.9% 75.9% 20 92.7% 94.3% 66.5% 67.0% 64.7% 25 89.0% 91.9% 59.3% 56.3% 52.6% 30 86.3% 87.8% 52.1% 49.4% 46.5% 40 85.1% 84.0% 43.1% 43.9% 43.5% 50 84.3% 82.5% 36.7% 32.5% 31.1% 60 82.8% 79.2% 30.6% 28.6% 26.0%

(12) The results of the absorption measurements clearly and impressively show that a particular group of organic phosphonates is able to provide relatively stable potassium manganate solutions. The use of organic phosphonates having organic groups with heteroatoms led to the potassium permanganate being reduced more rapidly.

(13) TABLE-US-00004 TABLE D Absorption of the comparative compositions 1 to 5 at 580 nm, wherein the absorption values at minute 0 were set with 100% and the further measurement results of the examination were correlated accordingly (mean value of three independent measurements). Measurement time Composition point [min] 1 2 3 4 5 0 100% 100% 100% 100% 100% 5 90.1% 91.2% 70.4% 73.1% 72.8% 10 87.2% 89.8% 67.5% 69.4% 69.1% 15 86.1% 88.2% 63.2% 65.7% 67.0% 20 84.9% 85.7% 61.4% 62.9% 61.9% 25 81.7% 80.2% 58.9% 56.4% 58.5% 30 77.1% 76.3% 54.2% 50.5% 53.6% 40 74.2% 74.7% 49.9% 46.3% 48.8% 50 71.6% 70.5% 38.7% 39.2% 36.7% 60 65.8% 67.1% 32.1% 33.5% 31.1%

(14) The results of the absorption measurements confirm that the use of an alternative oxidizing agent instead of persulphate (i.e. hydrogen peroxide) leads to a reduced stability of the potassium permanganate. This means that the use of persulphates led, compared to the use of other oxidizing agents, to a stabilization of the permanganate.