FIELD OF THE INVENTION
The present invention relates to a cleaning composition and more particularly to an acid based cleaning composition for cleaning the hard surface, inhibiting the recurrence of scales and maintaining gloss of said surface.
BACKGROUND
Compositions for cleaning and deodorizing sanitary wares such as toilets or urinals have long been sought by consumers, in both residential and commercial environments. Most of the toilets are contaminated by various organic materials that contain or support the growth of micro-organisms. A good cleaning composition should not only clean the visible dirt but also kill or inhibit the growth of the microorganisms. In order to meet the demand for sanitary cleaning compositions or deodorizers, numerous products have been developed and are presently commercially available. A number of toilet cleaners in the form of powder, gel, paste and liquid are available in the market, as well as known in the art.
A number of toilet bowl cleaners are disclosed in patent literatures that endeavor to mitigate the myriad issues associated with the art. United States Patent 6,153,572 discloses a toilet cleaner having an acid value from about 50 to about 90. The patent discloses a concentrated composition that is effective even at high dilutions. United States Patent 6,713,441 discloses a toilet bowl cleaner that includes a hypochlorite generator and an effervescent system. The cleaner was prepared, stored and packaged in a manner that prevents moisture from causing decomposition of the cleaning ingredients. United States Patent 3,897,357 discloses novel toilet bowl cleaner compositions that are capable of inhibiting the growth or multiplication of micro-organisms. United States Patent 4,759,867 discloses hard surface acid cleaners providing quick and effective cleaning results across myriad problematic cleaning areas and methods for preparing the same.
Ideal toilet bowl cleaners are particularly difficult to formulate due to the nature of their application and use. An effective cleaner must have sufficient strength, when diluted in water, to dissolve and remove scale. Moreover, the cleaner should cling to the vertical walls of the bowl for efficient removal of dirt and water scales. Toilet bowl cleaners that contain mineral acids have acid values of 140 or more. Unfortunately, high concentrations of mineral acids corrode and degrade delicate surfaces and irritate the skin of the user. Toilet bowl cleaners that contain organic acids have acid values of 45 or less. However, although organic acid based cleaners create less acidic conditions, they do not adequately attack scale and require a great deal of time and effort to effectively clean a toilet bowl.
Hard water contains dissolved salts of calcium and magnesium. When the water evaporates, it leaves behind a hardened deposit of these salts. Also, after cleaning a surface with water, tiny droplets adhere to the surface. This phenomenon is called as beading and is primarily responsible for the formation of water marks (hardened salt deposits) on a wet surface. On adding suitable surfactants to water, the surface tension of water is reduced. Due to reduced surface tension, water slides down the surface in the form of a sheet, resulting in a dry surface without water droplets, thereby preventing water scale formation. Hence, a good cleaning composition must inhibit beading and promote sheeting of water.
The surfaces of toilet bowls and urinals have a tendency to develop unsightly hard deposits and colored grimes as a result of metabolism of bacteria and molds. Repeated use of the toilet results in the build-up of a deposit derived from urine, fecal matter and hard water, commonly known by various names, such as toilet scale, lime deposit, calcium deposit, mineral deposit, hard water scale, etc. Such hardened mineral scales or toilet scales can be unyielding and only be removed with great difficulty by the acid-containing toilet bowl cleaning compositions that are currently available in the market. While compositions are known in the art, which clean and disinfect toilet bowls, there is nonetheless a need for novel cleaning compositions that can not only inhibit water scale formation but also remove the formed water scales, with ease.
SUMMARY OF THE INVENTION
The present invention relates to a cleaning composition and more particularly to a mineral acid based cleaning composition for cleaning the hard surface, inhibiting the recurrence of scales and maintaining gloss of said surface. The present invention provides a novel cleaning composition that not only removes water scales with ease, but also inhibits its formation.
In accordance with an embodiment of the invention, there is provided a cleaning composition, comprising: (a) an acid; (b) an anti-scale agent; (c) a thickener; (d) a disinfectant; (e) water; (f) fragrance; and (g) an acid stable and water soluble dye.
In accordance with another embodiment of the invention, the acid is selected from the group consisting of hydrochloric acid, sulphuric acid, sulphamic acid, phosphoric acid, citric acid, formic acid, oxalic acid, lactic acid, glycolic acid, malic acid, chloro acetic acid, propionic acid and combinations thereof and the acid is present in an amount in the range from 1%-65%.
In accordance with another embodiment of the invention, the anti-scale agent is a non-ionic surfactant and present in an amount in the range from 0.1%-1.0%.
In accordance with another embodiment of the invention, the thickener is selected from the group consisting of an amphoteric surfactant, bentonite, montmorillonite, precipitated silica, and combinations thereof, and present in an amount in the range from 0.1%-25%.
In accordance with another embodiment of the invention, the disinfectant is a cationic surfactant, and is present in an amount in the range from 0.1%-2%.
In accordance with another embodiment of the invention, water is present in an amount in the range from 15%-70%, the fragrance is present in an amount in the range from 0.1%-1%, and the acid stable and water soluble dye is present in an amount in the range from 0.01%-0.5%.
In accordance with another embodiment of the invention, the cleaning composition optionally comprises an abrasive, wherein the abrasive is present in an amount in the range from 2%-35%.
In accordance with another embodiment of the invention, the cleaning composition may be in the form of a paste, gel or liquid.
BRIEF DESCRIPTION OF DRAWINGS:
The invention can be described in the terms of the following figures where-
Figure 1A illustrates a tile that was not subjected to any wash cycle.
Figure 1B illustrates a tile that was subjected to 20 wash cycles, exclusively with tap water.
Figure 1C illustrates a tile that was subjected to 20 wash cycles with a commercially available toilet cleaner 1 comprising hydrochloric acid, hydroxyethyl oleylamine, cetyl trimethyl ammonium chloride, methyl salicylate, butylated hydroxy toluene and acid blue 9.
Figure 1D illustrates a tile that was subjected to 20 wash cycles with a commercially available toilet cleaner 2 comprising hydrochloric acid, hydroxyethyl oleylamine, cetyl trimethyl ammonium chloride, fragrance, butylated hydroxy toluene, acid blue 80 and acid red 52.
Figure 1E illustrates a tile that was subjected to 20 wash cycles with a cleaning composition described in Example 6.
Figure 1F illustrates a tile that was subjected to 20 wash cycles with a cleaning composition described in Example 7.

DETAILED DESCRIPTION OF INVENTION
Discussed below are some representative embodiments of the present invention. The invention in its broader aspects is not limited to the specific details and representative methods. The illustrative examples are described in this section in connection with the embodiments and methods provided. The invention according to its various aspects is particularly pointed out and distinctly claimed in the attached claims read in view of this specification.
It is to be noted that, as used in the specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, a reference to a composition containing “a compound” includes a mixture of two or more compounds. It should also be noted that the term “or” is generally employed in its sense including “and/or” unless the content clearly dictates otherwise.
The expression of various quantities in terms of “%” or “% w/w” means the percentage by weight of the total solution or composition unless otherwise specified.
All cited references are incorporated herein by reference in their entireties. Citation of any reference is not an admission regarding any determination as to its availability as prior art to the claimed invention.
The terms "water scale", "lime scale", “scale”, “lime deposit”, “calcium deposit”, “mineral deposit”, “hard water scale” and “water mark” mean essentially the same thing and can be used interchangeably.
The present invention, in its product and process aspects, is described in detail as follows.
The cleaning compositions of the present invention comprise: (a) an acid; (b) an anti-scale agent; (c) a thickener; (d) a disinfectant; (e) water (f) a fragrance; and (g) an acid stable and water soluble dye.
Hard water contains dissolved salts of calcium and magnesium. When this water evaporates, it leaves behind hardened salt deposits on the surface of toilet bowls and bathrooms. Calcium carbonate, which is one of the main constituents of lime scale, decomposes in the presence of an acid to form calcium salt, water, and carbon dioxide. Hence, cleaning compositions contain acid as an important constituent. Non-limiting examples of useful acids include hydrochloric acid, sulphuric acid, sulphamic acid, phosphoric acid, citric acid, formic acid, oxalic acid, lactic acid, glycolic acid, malic acid, chloro acetic acid, propionic acid and so forth, each of which can be used either individually or in combination. The acid is present in an amount in the range from 1%-65%. The concentrations of commercially available hydrochloric acid, sulphuric acid, sulphamic acid and phosphoric acid, used in the present invention are 33%, 98%, 99% and 85% respectively.
Particularly preferred components in the context of said cleaning compositions are anti-scale agents. In the present invention, non-ionic surfactants can be used as anti-scale agents. They impart a rinse aid property to the cleaning compositions, thereby helping remove water and aiding in quick drying of the bowl and bathroom surfaces. The presence of non-ionic surfactants lowers the surface tension of water. Hence, instead of forming beads, the water spreads into a thin sheet and rolls off the surface of toilet bowls or bathrooms, thereby aiding in quick drying and preventing water scale formation. The anti-scale agent is present in an amount in the range from 0.1%-1.0%.
Non limiting examples of non-ionic surfactants used in the present invention include dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrodienepolysilox, methylcarboxypolysilox, octadecylmethyldichlorosilane, octadecyldimethyl chlorosilane, octadecyltrimethoxysilane, octadecylmethyldimethoxysilane, octadecyldimethylmethoxysilane, methylhydrogensiloxane oligomer, methylhydrogensiloxane polymer, methylhydrogensiloxane copolymer; silanol endblocked siloxane polymer, silanol endblocked siloxane oligomer; silicone resin, Carbinol (hydroxyl) terminated polydimethylsiloxane (CAS No. 67674-67-3) and derivatives, and so forth, each of which can be used either individually or in combination.
One of the important requirements of a good cleaning composition is that it must adhere to the surfaces of the toilet bowl and bathroom. If the composition is in the form of a free-flowing liquid, it flows from the surface into the drain, without removing the scales or the stain. Hence, a cleaning composition should be sufficiently viscous, to enable it to remain on the surface for a specified period, for optimum cleaning action. In order to increase the viscosity of the cleaning compositions, a thickener is added. The thickener is selected from the group consisting of an amphoteric surfactant, bentonite, montmorillonite, precipitated silica, and so forth, each of which can be used individually or in combination and wherein said thickener is present in an amount in the range from 0.1%-25%.
Non-limiting examples of the amphoteric surfactant used in the present invention include tallow amidoalkylamine oxide, hardened tallow amidoalkylamine oxide, rapeseed amidoalkylamine oxide, hardened rapeseed amidoalkylamine oxide, tall oil amidoalkylamine oxide, hardened tall oil amidoalkylamine oxide, coco amidoalkylamine oxide, stearyl amidoalkylamine oxide, oleyl amidoalkylamine oxide, soya amidoalkylamine oxide, tallow amidopropyl dimethylamine oxide, hydrogenated tallow amidopropyl dimethylamine oxide, soya amidopropyl dimethylamine oxide, oleyl amidopropyl dimethylamine oxide, erucyl amidopropyl dimethylamine oxide, rapeseed amidopropyl dimethylamine oxide, hydrogenated rapeseed amidopropyl dimethylamine oxide, tall oil amidopropyl dimethylamine oxide, hydrogenated tall oil amidopropyl dimethylamine oxide, saturated or unsaturated fatty acid amidopropyl dimethylamine oxides, dihydroxy glycinates, phosphate ester of amine oxide, alkoxylated alkyl phenols, oleyl amine ethoxylates and so forth, each of which can be used either individually or in combination.
Disinfectants are defined as antimicrobials that eliminate specific vegetative microorganisms but not necessarily bacterial spores. Disinfectants generally work by destroying the cell membrane or interfering with the metabolism of microorganisms. A good cleaning composition must not only remove visible stains and marks but also kill or inhibit microorganisms, such as bacteria, viruses, fungi and algae. The disinfectant is present in an amount in the range from 0.1%-2.0% and may be a zwitterionic or cationic surfactant.
The antimicrobial action of cationic surfactants is well known in the art as a sequence of events: attraction of the cations by the negatively charged cell surface; adsorption to the cell wall through the hydrophobic headgroup; deformation of the cell wall and cell membrane; reaction with the lipoproteins that compose the cell membrane; penetration of the molecule into the cell; thereby destroying the integrity of the microorganism and exposing the intracellular components (M. R. J. Salton, “Lytic agents, cell permeability, and monolayer penetrability,” The Journal of General Physiology, vol. 52, no. 1, pp. 227–252, 1968). The non-limiting examples of cationic surfactants include methyl, dimethyl, and trimethyl ammonium cations; quarternary ammonium cations, such as tetramethyl-ammonium and dimethyl pyridinium cations; quaternary ammonium cations derived from alkylamines, such as ethylamine, diethylamine, triethylamine; and so forth, each of which can be used either individually or in combination.
Water is present in an amount in the range from 15%-70%, the fragrance is present in an amount in the range from 0.1%-1%, the acid stable and water-soluble dye is selected from the group consisting of Acid blue 9, acid blue 25, acid blue 62, acid blue 80, acid blue 182, acid blue 93, acid red 52, acid yellow 3 and combinations thereof, and the acid stable and water soluble dye is present in an amount in the range from 0.01%-0.5%.
The abrasive component of the cleaning compositions is most useful for the purpose of physically scouring the stains and lime scales from a surface. The abrasive agent is present in an amount in the range from 2%-35%. Non-limiting examples of the abrasive include aluminosilicate, aluminas, perlite, pumice, gypsum and silicates, hydrated alumina, feldspar, polyurethane, polystyrene, polypropylene, polycarbonate, polyethylene terthalate, nylon, polymethylmethacrylate, sodium tripolyphosphate, sodium tetraborate, potassium sulphate, diatomite and so forth, each of which can be used either individually or in combination.
The present invention is more particularly described in the following non-limiting examples that are intended as illustrations only since numerous modifications and variations within the scope of the present invention will be apparent to a skilled artisan. Unless otherwise noted, all parts, percentages, and ratios reported in the following examples are on a weight basis, and all reagents used in the examples were obtained or made available from the chemical suppliers.
Example 1
A cleaning composition in the form of a paste was prepared by a procedure given herein below. Table 1 shows the constituents and their amounts to be used in the cleaning composition. The unit of each value is percent by weight.
Water was weighed and added to a vessel. The other constituents were added in the following order. Oleyl Amine Ethoxylate was weighed and added to the vessel with stirring for 10 minutes. Hydrochloric acid (33%) was weighed and added to the vessel with continuous stirring for 10 minutes. Silica and Diatomite were weighed and added to the reaction vessel with continuous stirring for 10 minutes. Alkyl Trimethyl Ammonium Chloride was weighed and added to the reaction mixture. The mixture was stirred for another 10 minutes to form a uniform mixture. Carbinol (hydroxyl) terminated polydimethylsiloxane (CAS No. 67674-67-3) was weighed and added to the vessel and allowed to mix thoroughly with the other constituents. Acid Blue 80 was dispersed in water, and the dispersion was added to the vessel. Stirring was continued for another 5 minutes. Finally, perfume was weighed and added to the above mixture, and stirring was continued for another 5 minutes.

Table 1. Constituents of a cleaning composition in the form of a paste.
Sr. No Constituents Amount present in the composition (% w/w)
1 Hydrochloric Acid (33%) 47.50
2 Diatomite (abrasive) 4.00
3 Precipitated Silica (thickener) 16.00
4 Carbinol (hydroxyl) terminated polydimethylsiloxane (CAS No. 67674-67-3) (anti-scale agent) 0.30
5 Oleyl amine ethoxylates (thickener) 3.00
6 Alkyl Trimethyl Ammonium Chloride (28%-30%) (disinfectant) 1.00
7 Perfume/Fragrance 1.00
8 Acid Blue 80 (dye) 0.05
9 Water 28.15

Example 2
A cleaning composition in the form of a paste was prepared by a procedure given in Example 1. Table 2 shows the constituents and their amounts to be used in the cleaning composition. The unit of each value is percent by weight.

Table 2. Constituents of a cleaning composition in the form of a paste.
Sr. No Constituents Amount present in the composition (% w/w)
1 Hydrochloric Acid (33%) 30.00
2 Diatomite (abrasive) 4.00
3 Precipitated Silica (thickener) 12.00
4 Carbinol (hydroxyl) terminated polydimethylsiloxane (CAS No. 67674-67-3) (anti-scale agent) 0.15
5 Oleyl amine ethoxylates (thickener) 0.50
6 Alkyl Trimethyl Ammonium Chloride (28%-30%) (disinfectant) 0.50
7 Perfume/Fragrance 0.20
8 Acid Blue 80 (dye) 0.02
9 Water 52.63

Example 3
In another embodiment, cleaning composition in the form of a paste was prepared by a procedure given in Example 1. Table 3 shows the constituents and their amounts to be used in the cleaning composition. The unit of each value is percent by weight.

Table 3. Constituents of a cleaning composition in the form of a paste.
Sr. No Constituents Amount present in the composition (% w/w)
1 Hydrochloric Acid (33%) 53.00
2 Diatomite (abrasive) 3.00
3 Precipitated Silica (thickener) 20.00
4 Carbinol (hydroxyl) terminated polydimethylsiloxane (CAS No. 67674-67-3) (anti-scale agent) 0.45
5 Oleyl amine ethoxylates (thickener) 5.00
6 Alkyl Trimethyl Ammonium Chloride (28%-30%) (disinfectant) 1.50
7 Perfume/Fragrance 1.50
8 Acid Blue 80 (dye) 0.10
9 Water 15.45

Example 4
According to another embodiment a cleaning composition in the form of a gel/liquid was prepared by a procedure given herein below. Table 4 shows the constituents and their amounts to be used in the cleaning composition. The unit of each value is percent by weight.
Water was weighed and added to a vessel. The other constituents were added in the following order. Oleyl Amine Ethoxylate was weighed and added to the vessel with stirring for 10 minutes. Hydrochloric acid (33%) was weighed and added to the vessel with continuous stirring for 10 minutes. Alkyl Trimethyl Ammonium Chloride was weighed and added to the reaction mixture. The mixture was stirred for another 10 minutes to form a uniform mixture. Carbinol (hydroxyl) terminated polydimethylsiloxane (CAS No. 67674-67-3) was weighed and added to the vessel and allowed to mix thoroughly with the other constituents. Acid Blue 80 was dispersed in water, and the dispersion was added to the vessel. Stirring was continued for another 5 minutes. Finally, perfume was weighed and added to the above mixture, and stirring was continued for another 5 minutes.
Table 4. Constituents of a cleaning composition in the form of a liquid/gel.
Sr. No Constituents Amount present in the composition (% w/w)
1 Hydrochloric Acid (33%) 47.50
2 Carbinol (hydroxyl) terminated polydimethylsiloxane (CAS No. 67674-67-3) (anti-scale agent) 0.35
3 Oleyl amine ethoxylates (thickener) 2.30
4 Alkyl Trimethyl Ammonium Chloride (28%-30%) (disinfectant) 0.50
5 Perfume/Fragrance 0.20
6 Acid Blue 80 (dye) 0.05
7 Water 49.10

Example 5
A cleaning composition in the form of a gel/liquid was prepared by a procedure given in Example 4. Table 5 shows the constituents and their amounts to be used in the cleaning composition. The unit of each value is percent by weight.
Table 5. Constituents of a cleaning composition in the form of a liquid/gel.
Sr. No Constituents Amount present in the composition (% w/w)
1 Hydrochloric Acid (33%) 35.00
2 Carbinol (hydroxyl) terminated polydimethylsiloxane (CAS No. 67674-67-3) (anti-scale agent) 0.10
3 Oleyl amine ethoxylates (thickener) 0.50
4 Alkyl Trimethyl Ammonium Chloride (28%-30%) (disinfectant) 0.50
5 Perfume/Fragrance 0.20
6 Acid Blue 80 (dye) 0.02
7 Water 63.68

Example 6
A cleaning composition in the form of a gel/liquid was prepared by a procedure given in Example 4. Table 6 shows the constituents and their amounts to be used in the cleaning composition. The unit of each value is percent by weight.
Table 6. Constituents of a cleaning composition in the form of a liquid/gel.
Sr. No Constituents Amount present in the composition (% w/w)
1 Hydrochloric Acid (33%) 51.00
2 Carbinol (hydroxyl) terminated polydimethylsiloxane (CAS No. 67674-67-3) (anti-scale agent) 0.50
3 Oleyl amine ethoxylates (thickener) 0.50
4 Alkyl Trimethyl Ammonium Chloride (28%-30%) (disinfectant) 1.50
5 Perfume/Fragrance 0.50
6 Acid Blue 80 (dye) 0.10
7 Water 45.90

Example 7
A cleaning composition in the form of a gel/liquid was prepared by a procedure given in Example 4. Table 7 shows the constituents and their amounts to be used in the cleaning composition. The unit of each value is percent by weight.
Table 7. Constituents of a cleaning composition in the form of a liquid/gel.
Sr. No Constituents Amount present in the composition (% w/w)
1 Hydrochloric Acid (33%) 47.50
2 Carbinol (hydroxyl) terminated polydimethylsiloxane (CAS No. 67674-67-3) (anti-scale agent) 1.00
3 Oleyl amine ethoxylates (thickener) 2.30
4 Alkyl Trimethyl Ammonium Chloride (28%-30%) (disinfectant) 0.50
5 Perfume/Fragrance 0.10
6 Acid Blue 80 (dye) 0.05
7 Water 48.55

Example 8
Evaluation of the anti-scaling property of the cleaning composition of present invention
The study design and methods used for the evaluation of the anti-scaling efficacy of the cleaning composition of the present invention are described hereinafter.
The anti-scaling compositions of the present invention, viz., Example 6 and Example 7, were compared with toilet cleaner 1 (hydrochloric acid, hydroxyethyl oleylamine, cetyl trimethyl ammonium chloride, methyl salicylate, butylated hydroxy toluene and acid blue 9) and toilet cleaner 2 (hydrochloric acid, hydroxyethyl oleylamine, cetyl trimethyl ammonium chloride, fragrance, butylated hydroxy toluene, acid blue 80 and acid red 52), that are commercially available. Comparative study for evaluating the anti-scaling efficacy of the anti-scaling composition of the present invention was carried out on a dark colored glazed ceramic tile.
In order to evaluate the anti-scaling efficacy, 5 g of a cleaning composition was applied on the glazed surface of a tile. The tile was uniformly smeared, including the edges, with said composition. The composition was allowed to remain on the surface for 15 minutes at room temperature. Thereafter, the tile was rinsed with tap water till no residual material was visible on the tile. The tile was placed inclined against a wall and allowed to dry, completing one wash cycle. The cycle was repeated up to 20 times, and the tile was photographed and observed for scale formation.
The effect of water on the tile was evaluated by performing 20 wash cycles using only tap water without any cleaning composition.
Figure 1A depicts a tile that has not been exposed to any wash cycle. Hence, no water marks are visible on it. The tile that was exposed to 20 wash cycles, exclusively with tap water, showed excessive build up of water scales (Figure 1B). The use of the commercially available cleaning compositions, viz., toilet cleaner 1 and toilet cleaner 2, left visible water marks on the surface of the tiles (Figures 1C and 1D). A tile treated with the composition of Example 6 and Example 7 developed negligible water marks after 20 wash cycles (Figure 1E and 1F).
The results clearly indicate that the cleaning compositions of the present invention are more effective at preventing water scales than other commercially available cleaning compositions, after 20 wash cycles.
While particular embodiments of the cleaning composition of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is thereof intended to cover in the appended claims such changes and modifications that are within the scope of the invention.

CLAIMS:
We claim:
1. A cleaning composition, comprising: an acid; an anti-scale agent; a thickener; a disinfectant; water; a fragrance; and an acid stable and water soluble dye.
2. The cleaning composition as claimed in claim 1, wherein the acid is present in an amount in the range from1%-65%.
3. The cleaning composition as claimed in claim 2, wherein the acid is selected from the group consisting of hydrochloric acid, sulphuric acid, sulphamic acid, phosphoric acid, citric acid, formic acid, oxalic acid, lactic acid, glycolic acid, malic acid, chloro acetic acid, propionic acid and combinations thereof.
4. The cleaning composition as claimed in claim 1, wherein the anti-scale agent is a non-ionic surfactant, and present in an amount in the range from 0.1%-1.0%.
5. The cleaning composition as claimed in claim 4, wherein the non-ionic surfactant is selected from the group consisting of dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrodienepolysilox, methylcarboxypolysilox, octadecylmethyldichlorosilane, octadecyldimethyl chlorosilane, octadecyltrimethoxysilane, octadecylmethyldimethoxysilane, octadecyldimethylmethoxysilane, methylhydrogensiloxane oligomer, methylhydrogensiloxane polymer, methylhydrogensiloxane copolymer; silanol endblocked siloxane polymer, silanol endblocked siloxane oligomer; silicone resin, carbinol (hydroxyl) terminated polydimethylsiloxane (CAS No. 67674-67-3) and derivatives, and combinations thereof.
6. The cleaning composition as claimed in claim 1, wherein the thickener is present in an amount in the range from 0.1%-25%.
7. The cleaning composition as claimed in claim 6, wherein the thickener is selected from the group consisting of an amphoteric surfactant, bentonite, montmorillonite, precipitated silica and combinations thereof.
8. The cleaning composition as claimed in claim 7, wherein the amphoteric surfactant is selected from the group consisting of tallow amidoalkylamine oxide, hardened tallow amidoalkylamine oxide, rapeseed amidoalkylamine oxide, hardened rapeseed amidoalkylamine oxide, tall oil amidoalkylamine oxide, hardened tall oil amidoalkylamine oxide, coco amidoalkylamine oxide, stearyl amidoalkylamine oxide, oleyl amidoalkylamine oxide, soya amidoalkylamine oxide, tallow amidopropyl dimethylamine oxide, hydrogenated tallow amidopropyl dimethylamine oxide, soya amidopropyl dimethylamine oxide, oleyl amidopropyl dimethylamine oxide, erucyl amidopropyl dimethylamine oxide, rapeseed amidopropyl dimethylamine oxide, hydrogenated rapeseed amidopropyl dimethylamine oxide, tall oil amidopropyl dimethylamine oxide, hydrogenated tall oil amidopropyl dimethylamine oxide, saturated or unsaturated fatty acid amidopropyl dimethylamine oxides, dihydroxy glycinates, phosphate ester of amine oxide, alkoxylated alkyl phenols, oleyl amine ethoxylates and combinations thereof.
9. The cleaning composition as claimed in claim 1, wherein the disinfectant is a cationic surfactant and present in an amount in the range from 0.1%-2%.
10. The cleaning composition as claimed in claim 9, wherein the cationic surfactant is selected from a group consisting of methyl, dimethyl, and trimethyl ammonium cations; quarternary ammonium cations, such as tetramethyl-ammonium and dimethyl pyridinium cations; quaternary ammonium cations derived from alkylamines, such as ethylamine, diethylamine, triethylamine; and combinations thereof.
11. The cleaning composition as claimed in claim 1, wherein water is present in an amount in the range from 15%-70%, the fragrance is present in an amount in the range from 0.1%-1%, and the acid stable and water soluble dye is present in an amount in the range from 0.01%-0.5%.
12. The cleaning composition as claimed in claim 11, wherein the acid stable and water-soluble dye is selected from the group consisting of Acid blue 9, acid blue 25, acid blue 62, acid blue 80, acid blue 182, acid blue 93, acid red 52, acid yellow 3 and combinations thereof.
13. The cleaning composition as claimed in claim 1, wherein the composition optionally comprises an abrasive and is in the form of a paste.
14. The cleaning composition as claimed in claim 13, wherein the abrasive is present in an amount in the range from 2%-35%.
15. The cleaning composition as claimed in claim 14, wherein the abrasive is selected from the group consisting of aluminosilicate, aluminas, perlite, pumice, gypsum and silicates, hydrated alumina, feldspar, polyurethane, polystyrene, polypropylene, polycarbonate, polyethylene terthalate, nylon, polymethylmethacrylate, sodium tripolyphosphate, sodium tetraborate, potassium sulphate, diatomite and combinations thereof.
16. The cleaning composition as claimed in claims 1 to 12, wherein the composition is in the form of a gel or a liquid and the thickener is an amphoteric surfactant.