MXPA06006260A - Method, articles and compositions for cleaning bathroom surfaces - Google Patents

Abstract

The present invention relates to a disposable cleaning article for cleaning a bathroom surfaces which includes a layer of nonwoven substrate and a cleaning composition which can be either in a liquid or paste form. The cleaning article is water activate. The present invention also relates to a method of cleaning a hard surface by adding water to a disposable cleaning article impregnated with a cleaning composition and then wiping the bathroom surface.

Description

METHOD, ARTICLES AND COMPOSITIONS TO CLEAN BATH SURFACES FIELD OF THE INVENTION The present invention relates to a method, articles and compositions for cleaning the bath. In particular, it relates to the use of disposable cleaning wipes containing a cleaning composition in pre-moistened form or of paste that is activated with water to improve the cleaning of soap residue, lime scale and mixtures thereof, and optionally, mold and dirt. of mold found on bathroom surfaces.

BACKGROUND OF THE INVENTION Disposable cleaning cloths and wipes are well known in the industry. These have been manufactured, for various needs such as car care, skin care and kitchen cleaning. Disposable cleaning cloths have two advantages. First, since the cloths include both the substrate and the chemical cleaning composition in a single run, the two components can be designed to maximize cleaning efficiency; this unlike conventional cleaning products for which the cleaning substrate and cleaning product are independently selected and rarely coordinated. Second, disposable wipes are easy to use and discard. Therefore, consumers obtain better results regarding cleaning and they do it with less difficulty. Disposable cleaning cloths known for cleaning hard surfaces are usually pre-wet, and are designed for single use on kitchen and bathroom surfaces. Known disposable disposable cleaning wipes are not adapted to remove soap residue and lime scale, which is a common need in the cleaning of bathroom surfaces such as bathtub and shower cabins. Disposable cleaning wipes known in the industry do not comprise sufficient cleaning actives, nor sufficient solvent and / or water, to clean an entire bathtub or shower cabin. Difficult soils such as soap scum, lime scale and mixtures thereof are not softened sufficiently by the chemical composition of the cloth and are still difficult, even with the use of multiple cloths. It has now been discovered that effective and practical cleaning of these bath surfaces can be achieved by means of single-use disposable wipes, in which the wiping composition present on the wipe is activated with water and released on the surface of the bath. clean. In addition, specific cleaning compositions have been formulated in the form of aqueous solutions or pastes, which are very effective in removing the soap residue, lime scale and mixtures thereof, from bath surfaces, when used in combination with the disposable wipes of the bath. a single use of the invention and in accordance with the method of activation with water described herein.

In addition, specific compositions in paste form have been created that provide excellent cleaning, ease of manufacture of the finished product, and aesthetic advantages of the product. Methods for cleaning hard surfaces involving the addition of water to disposable cleaning cloths in the form of a paste or pre-moistened, are known in certain areas, particularly in the dishwashing area. The publication of the U.S. patent application no. 2002/0132747 of Huyhn et al., Published September 19, 2002, and assigned to The Procter & Gamble Company, describes a process to clean crockery using a two-sided cloth for the kitchen, which can be dry or damp to the touch. The publication of the U.S. patent application no. 2003/0100462 by Suazon et al., Published May 29, 2003 and assigned to The Colgate-Palmolive Company discloses a dishwashing cloth that is practically dry to the touch and that comprises (a) 20% to 95% of a substrate Insoluble in water and (b) 5% to 80% of a cleaning composition impregnated in said water-insoluble substrate; said composition comprises: 20-60% of a sulfonated surfactant, 30-65% of a non-ionic surfactant ethoxylated, 1-10% polyethylene glycol, wherein the composition contains less than 10% water. U.S. Patent Application No. 2003/0100462 further describes a cleaning method by moistening a dish towel with water. The cloths with cleaning composition mentioned above are not suitable for cleaning dirt from the bath, such as soap residue and lime scale and mixtures of these.

The multipurpose cloths for specific use in the bathroom are also known in the industry. U.S. Pat. no. No. 4,759,865 discloses a pasty detergent composition for bath cleansing compositions, comprising a pasty mass made by dry blending alkylbenzene sulfonic acid followed by neutralization with a caustic solution, active organic acid and filler. The sticky detergent paste serves as both an active cleaning component and as a carrier for organic acids for the removal of limescale and soap residue, and is used as is, without activation with water. Representative of known single-use cloths for hard surfaces is US Pat. no. 6,376,443, which describes a bath cloth comprising a water insoluble substrate and an aqueous cleaning composition with a load factor of up to 2.25 g / g, said cleaning compositions consisting of 0.1% to 5% zwitterionic surfactant, 0.5% a 10% C1-C4 alkanol, 0.5% to 8% of a cosurfactant, 0.1% to 1% of an anti-rain or anti-dust agent and 0.05% to 3.0% of a proton donor at a pH of about 3 to about 7. it is an object of this invention to provide a method for cleaning surfaces of the bath, in particular the soap residue and limescale and mixtures of these in the bathtubs and showers of the bath, with a cleaning cloth that provides sufficient performance to clean an entire bath or shower cabin with a single cleaning cloth, and without needing more than one product for the entire cleaning process. Since the size and number of the surfaces may vary from consumer to consumer or even to the same consumer on different occasions, the invention also allows for limited reuse. Limited reuse provides the ability, if the consumer chooses, to use a single cloth to do a small job, store it and reuse it for another job or until the chemical composition is exhausted. Another object of this invention is to provide superior performance articles for cleaning bath surfaces, containing cleaning wipes comprising at least one nonwoven substrate impregnated with a cleaning composition in paste or aqueous form. It is another object of this invention to provide top cleaning compositions, in particular in the form of pulp, to be used, preferably, with the method and articles of the invention.

BRIEF DESCRIPTION OF THE INVENTION In a main embodiment, the present invention relates to: A method for cleaning bathroom surfaces, in particular bathtub and shower cabins with a single-use disposable cleaning cloth, comprising the steps of: • Providing a disposable cloth that contain a cleaning composition in the form of paste or water; • contact said cloth with water to activate the cloth; • contact the activated cloth with the surface of the bathroom to be cleaned; • optionally, but preferably, rinse the surface with water. The method in the present is directed, in particular, to the cleaning of soap residue, lime scale and mixtures thereof. In a preferred embodiment, the method can also provide antibacterial, antiviral and antifungal benefits. In a second main embodiment, the present invention relates to an article for cleaning bathroom surfaces; the article comprises a disposable cleaning cloth comprising at least one nonwoven substrate having a basis weight of about 20 g / m2 to about 200 g / m2, and a cleaning composition comprising at least about 5% surfactants and at least about 3% of one or more organic or inorganic acids and mixtures thereof, wherein said weight of the cleaning composition per area in said nonwoven substrate is from about 0.005 g / cm2 to about 0.60 g / cm2. , more preferably from about 0.015 g / cm2 to about 0.30 g / cm2, and most preferably from about 0.025 g / cm2 to about 0.20 g / cm2. The articles herein may consist of said cleaning cloths, or may further comprise an implement to which the cloth is removably fastened during the cleaning operation.; said implement comprises a head to which the cloth is fastened and optionally, a handle and / or a post. The cloths to be used in the method and articles herein are preferably a laminate of at least 2 non-woven substrates forming two sides, at least one of which is a useful side for cleaning, and the composition is applied to preference on the cleaning side, preferably in a uniform pattern. The cleaning composition to be used in the method and article herein is preferably selected from the group of: • pastes and aqueous compositions containing at least about 5% surfactant and at least about 3% of one or more organic or inorganic acids and mixtures thereof, wherein the pH of a 10% solution of said pastes and aqueous compositions is from about 0.5 to about 6; • pastes and aqueous compositions containing at least about 5% surfactant and at least about 3% of one or more sequestrants, wherein the pH of a 10% solution of said pastes and aqueous compositions is from about 6 to about 12; wherein said composition preferably comprises at least about 3% of one or more hydrotropes and / or at least about 1% of one or more organic cleaning solvents. In a third main embodiment, the present invention relates to a cleaning composition for bath surfaces, in particular for soap residues, lime scale, and preferably mold, in the form of paste; said dough comprises: • At least about 5% of surfactants, at least about 3% of one or more organic or inorganic acids and mixtures thereof, and further comprising at least about 3% of one or more hydrotropes and / or at least 1% of an organic solvent, wherein the pH of a 10% solution of said composition is from about 0.5 to about 6; or • at least about 5% surfactants, at least about 3% of one or more sequestrants, and further comprises at least about 3% of one or more hydrotropes and / or at least 1% of an organic solvent in wherein the pH of a 10% solution of said composition is from about 6 to about 12. The surfactants are preferably present at levels of from about 7.5% to 80%, more preferably from about 10% to about 70%, most preferably from about 15% to about 50%, and at least one surfactant is preferably selected from the group comprising anionic sulphonate surfactants. The hydrotropes are selected from the group comprising toluene sulfonate salts, xylene and eumeno, C6-C12 diphenyl ether disulfonate salts, C4-C6 alcohol ethoxylates, C4-C6 glycosides, 2-ethyl-1-hexyl sulfate salts , salts of mono- and di-2-ethyl-1-hexyl sulfosuccinate, and alkyl ethoxylates C8-C22 having an HLB greater than about 12, and mixtures thereof. In the acid compositions herein, the acids are preferably present at levels of about 10% to about 40% and are preferably selected from the group comprising adipic acid, citric acid, glutaric acid, glycolic acid, acid maleic acid, phosphoric acid, succinic acid, sulfamic acid and mixtures thereof. In the neutral or alkaline composition herein, the sequestrants are preferably present at levels of about 10% to about 50% and are preferably selected from the group comprising the sodium, potassium, ammonium and alkanolammonium salts or the partial salts of nitrilotriacetic acid, methylglycinediacetic acid and ethylenediaminetetraacetic acid. Organic solvents are present at levels of at least about 5%, and are preferably glycol ether solvents selected from the group comprising dipropylene glycol n-butyl ether, dipropylene glycol n-propyl ether, tripropylene glycol n-butyl ether, ether n-propyl of tripropylene glycol, n-hexyl ether of ethylene glycol, diethylene glycol n-hexyl ether, and mixtures thereof. The cleansing compositions also preferably contain at least one surfactant selected from the group of betaines, zwitterionic and amphoteric surfactants and mixtures thereof. The cleaning compositions preferably contain about 3% to 20% of one or more bleach or bleach precursors selected from the group consisting of hydrogen peroxide, sodium percarbonate, sodium perborate, and the sodium and potassium salts of persulfate , hypochlorite, hypobromite and mixtures of these. Definitions The relevant parts of all the cited documents are incorporated herein by reference; the mention of any document should not be construed as an admission that it constitutes a prior industry with respect to the present invention. It should be understood that each maximum numerical limitation given in this specification will include each of the numerical limitations below, as if those lower numerical limitations had been explicitly annotated in the present. All minimum numerical limits cited in this specification shall include all major numerical limits as if such numerical major limits had been explicitly quoted herein. All numerical ranges cited in this specification shall include all minor intervals that fall within the larger numerical ranges as if all minor numerical intervals had been explicitly quoted in the present. All parts, proportions and percentages used herein, in the specification, examples, and claims are given by weight and all numerical limits are used with the normal degree of accuracy provided by the industry, unless otherwise specified. All the pH measurements in the pastes and the aqueous cleaning compositions are carried out by removing said cleaning compositions from the cloth, and making a 10% solution of the cleaning composition before carrying out a pH measurement. This is required in particular for the paste compositions, since the pH can not be measured easily or accurately in a concentrated chemical composition. As used herein, a 'paste' is a chemical composition comprising from 0% to about 40% water, with a minimum viscosity of 50 Pascal seconds (Pa.s) at a shear rate of 1 s-1. . It is noted that the solvent content may exceed about 40%, but if so, at most 40% of the composition may be water. Water can be obtained from any source; Water specifications are described in more detail in the section describing an 'aqueous composition' below. At one end, the pulp is a powder or solid containing only trace amounts of water, more preferably at least about 1% water, still more preferably at least about 2% water, and most preferably, at least about 3% water. At another extreme, the pastes may have a water content as high as about 40%, more preferably from about 5% to about 30%, more preferably from about 6% to about 25%, even more preferably about 7. % to about 20% and most preferably from about 7% to about 15% water. The exact water content will depend on the level of other solvents in the pulp and the desired rheological properties of the pulp. The viscosity of the paste is in general inversely proportional to the liquid content (at 25 ° C) in the composition, including water and other solvents. Preferably, the viscosity of the pulp is at least about 75 Pa.s, more preferably at least about 100 Pa.s, most preferably at least about 150 Pa.s at a shear rate of 1.0 s. 1. Preferably, the viscosity of the pulp is at most about 10,000 Pa.s, more preferably at most about 5,000 Pa.s and most preferably at most about 1000 Pa.s at a shear rate of 1.0 s.sup.-1. The preferred ranges of viscosity will depend on the specific components of the paste composition. Any range consisting of a minimum viscosity level and a maximum viscosity level defined above can be used. As used herein, an 'aqueous composition' is a composition comprising at least about 20% water, more preferably at least 30% water, even more preferably at least 40% water, with the highest preference for at least 50% water. The water source can be any of those known in the industry. The water hardness can vary between 0 gpg to 50 gpg. Preferably, the water in the pre-moistened cloth is highly purified or is at least soft water, with a hardness ranging from 0 gpg to 3 gpg. The purification of water, if used, can be obtained by any means known in the industry, including distillation, deionization and demineralization. The aqueous cleaning composition can be in the form of, for example, an isotropic liquid, a turbid liquid (almost isotropic), an emulsion, microemulsion, or alternatively, in the form of a gel or transparent thickened solution, translucent and optionally opacified. The aqueous compositions can also have any viscosity. By 'bathtub cabins and bathroom shower' or 'cabin areas', it refers to all the inanimate surfaces that are normally associated with a bath or shower installation of a modern home. Cockpit and shower cabins usually have dimensions of no more than about 3 meters in length and no more than 3 meters in width and include a combination of one or more of the following: bathtubs, shower heads, fixed or sliding entry doors, curtains, walls, tiles, stoneware, and various accessories to deliver hot and cold water to the bath or shower area.

By 'soap residue' it refers to the dirt that results from the reaction of the dirt of the body with the hardness of the water. The soap residue is highly insoluble in water and comprises, among other major components, calcium salts of fatty acids. The soap residue is rarely found only in bathroom cabins; and it is usually found in combination with lime scale dirt. By 'scale incrustations', it refers to the dirt that results from the evaporation of water with a hardness above 0 grains per gallon (gpg). Hardness, refers to the combination of known mineral salts that are present in most of the waters used in bathtubs or showers; Mineral salts include significant levels of magnesium and calcium salts and lower levels of transition metal salts. Cockpit and shower cabins, in particular those that include glass doors, are easily soiled by water droplets containing hardness, which cling tenaciously to glass and enamel surfaces, and dry out leaving water spots difficult to remove. By 'single use disposable cloth', it refers to a cleaning cloth designed for the total cleaning of a very dirty bathtub or shower cabin; The cloth is discarded, preferably, when completing the cleaning work. 'Single use' means that the cleaning chemical composition on or on the cloth is sufficient but not excessive to clean a large dirty bathtub or shower cabin. It is possible to use disposable "single use" cloths to clean two bathtubs or showers, perhaps even three, if the bath or shower cabins are smaller or not very dirty. Some users can still choose to store and store the cleaning cloth product after a single use, preferably a single light use, for a subsequent cleaning operation at another time. 'Single use' also takes into account some users who choose to store and store the cleaning cloth product after a smaller job for a later cleaning operation of the bathroom at another time to obtain greater value from the cloth. This is defined as 'limited reuse'. However, the 'disposable disposable cloth' product form discourages multiple uses beyond those described above, due to limitations in the amount of chemical composition or dilution of active ingredients, or due to limitations physical on the substrate. The 'cloths' comprise at least one non-woven fabric and a chemical cleaning composition on the surface of the cloth (usually pastes) or impregnated on the cloth (aqueous compositions). For 'disposable cloths', the integrity, or effectiveness, or aesthetic appeal of the cloth is quickly reduced with repeated use, signaling the need to be thrown away. Intrinsic physical or aesthetic deterioration in performance will discourage further use of the cloth or the application of additional aqueous paste or chemistry to the substrate after its initial use, limiting the useful life of the cloth. As used herein, the term 'cleaning cloth' refers to a 'single use disposable cloth' for cleaning dirt, including soap residue, hard water and mixtures of these in bathtubs or showers.

By 'cleaning implement' refers to a multi-purpose, durable and reusable cleaning tool that helps in the cleaning of hard surfaces. The implement is not a cleaner and does not include a cleaner; instead, the implement is attached to the disposable head by means of the implement head, a single-use disposable cloth comprising a cleansing chemical composition ready to be activated by water. The head of the implement is in direct contact with the single-use disposable cloth during the cleaning process. A cleaning implement may also optionally include a handle and / or a post attached to the implement head to assist the user in directing the cleaning work further away from the hard surface to be cleaned.

DETAILED DESCRIPTION OF THE INVENTION Method: In a first principal embodiment, the present invention relates to a method for cleaning surfaces of the bath, in particular bath and shower surfaces, comprising the steps of Providing a disposable cloth containing a cleaning composition in the form of paste or aqueous; contacting said cloth with water to activate the cloth; contact the cloth with the surface of the bathroom to be cleaned; and optionally, but preferably, rinsing the surface with water. In one embodiment, the above method of cleaning a surface of the bath is carried out by also holding the disposable cloth to a cleaning implement. The cloth is attached to the implement before contacting the cloth with water. The present method is adapted in particular to clean soap residue, lime scale, and mixtures thereof. In a preferred embodiment, the method can be further directed to antibacterial and antifungal benefits. However, those skilled in the industry will understand that despite the particular effectiveness of the method discussed above, and the wiping cloths (described below) for cleaning bathroom surfaces, the same method and wipes can also be used to clean any other type of cleaning. surface, in particular hard surfaces. It will be understood that any of the disposable wipes and cleaning compositions described hereafter can be used in the method of cleaning a previously described bath surface. Activation with water: In the present, the cloths must be activated with water, in accordance with the present method. Activation with water comprises adding water to the aqueous or paste-containing cleaning wipes, or adding water to the hard surfaces to be cleaned, followed by contacting the wiping cloth with water to said hard surfaces. As an alternative, the activation with water can be obtained by means of a dosing device, preferably a dosing device detachably fastened to the head, a handle and / or a cleaning implement post, as described in the 'rinsing' section of the exposure . The essential feature is that the cleaning cloth is contacted with water. Activation with water can be used once or more during the cleaning process; preferably, activation with water is used several times. Most preferably, the cloth is first activated and then used for cleaning, then reactivated as necessary to complete the cleaning work or until the contents of the pre-moistened cloth or the cloth with paste are exhausted. Warm or hot water is used advantageously in the process of activation with water; the water has a temperature of preferably from about 30 ° C to about 45 ° C, more preferably from about 35 ° C to about 40 ° C, most preferably about 37 ° C, for rapid dissolution of the aqueous composition or It contains paste and high cleaning effectiveness of the chemical composition activated by water and maximum safety for the skin of the user. The water is preferably substantially free of bacteria and water hardness, preferably less than about 10 grains per 3.78 L [10 grains per gallon (gpg)]. The amount of water used to activate the product will vary from one user to another and depends in part on the amount of the pre-charged chemical composition and the size and mass of the cleaning cloth. However, it is preferred that the cleaning side that can include a nonwoven material of the cleaning cloth be saturated with sufficient water to clearly see the formation of foams at the cloth-air contact point before use.

Any means can be used to contact the cleaning cloth with water. Normally, activation with water is achieved by exposing the cleaning cloth directly to a source of water readily available in the area of the bath or shower cabin, such as a bathtub tap or shower head. Water can also be obtained from other places and transferred to the cloth or surface to be cleaned by means of, for example, syringes, garden hoses, atomizer bottles, beverage containers, buckets, and the like. In a preferred embodiment of the method of the present invention, an area of the floor of the bath or shower is partially filled with warm to hot water (preferably 30 ° C-45 ° C) from the bath or shower faucet, and the cloth Cleaner is immersed in the puddle of water as needed for activation with water. During the activation process with water, the cloth can be manipulated directly by the user, or can be detachably fastened to an implement; said implement comprises an optional head or handle and / or a pole. The activation with water by means of the implement allows the user to keep in control of the cleaning process without getting wet or exposed to warm / warm water, or chemicals on the cleaning cloth. Cleaning: Once the cleaning cloth is activated with water, it is ready to be used for cleaning. Cleaning consists in contacting the activated cloth with water with the surface of the bathroom to be cleaned, in particular the dirty bathtub or shower. This can be achieved in any way as desired by the user of the product. Hand use may be preferred, particularly for hard-to-reach areas, and for cleaning accessories such as bathtub and shower faucets that occupy small areas in bathtub or shower cabins that are very contoured. To clean bathtub and shower cabins, it is advantageous to treat the dirtiest areas first, and then work the least dirty surfaces before rinsing the treated bathtub / shower cabin. This cleaning method prolongs the residence time in the most difficult soils, leading to improved softening and elimination of dirt. The most difficult to clean surfaces will vary from one home to another and from one bathroom to another, and will depend on the actual installation of the bathtub / hard, the quality of the components in the installation of the bath / shower, the age of those components , and the use and wear. For example sliding or fixed glass doors that are sometimes part of the bath / shower cabin can get dirty with lime scale stains that are difficult to remove. As such, the cleaning of dirty glass doors is preferably executed early in the cleaning process. In general, the water-activated cleaning cloth is first applied to the lower dirty part of the bathtub, the 'ring' around the bathtub, or the lower portion of the shower to remove the stubborn incrustations of hard water and soap residue in the bath. these areas. Optional rinsing step: Rinsing can be achieved by any means known in the industry. The shower heads can be moved at an angle and the water can be opened to rinse. The showers are also equipped with detachable hoses and / or shower heads that make it easy to reach and rinse all corners of the bath or shower enclosure. The rinsing can also be obtained by spraying water on the cleaned surface by hand or by using a dosing mechanism such as a glass, glass container, pot, squeeze bottle, or any other device for holding and dispensing water. As an alternative, rinsing can be achieved by mechanical means, including pressure activated garden hoses, devices activated by a trigger (eg Super Soaker) and the like or electronic means such as battery operated sprinklers. Alternatively, the implement may optionally include a rinsing dispensing device that is preferably removable as described hereinafter. The cleaning cloth itself can act as a rinse aid, particularly if the chemical content in the cloth has been exhausted. In one embodiment, the cleaning cloth comprises an external surface comprising synthetic fibers on which, or near which, a cleaning paste can be charged, and a second exposed outer surface composed mainly of cellulose-based fibers, which can be used for rinse. At the time of rinsing, the cloth is turned outward, and the cellulose side is used for rinsing, alone or in combination with a rinsing dispensing system with water, a rubber rinser or combinations thereof. The rinsing temperature is not critical to the process and can be varied according to the user's preference.

In another embodiment, the excess remaining cleaning actives on the bath or shower after the treatment with the water activated cloth, can be removed by means of a rubber squeegee, with or without the use of rinse water, the cloth or the dispensing device rinse. The rubber squeegee can be used as a separate tool or can be attached, permanently or more preferably removably, to the implement. For example, the rubber rinser can be attached to the head, a handle and / or a tool post by means of a plastic clip. After cleaning the bottom of the bathtub, the dirty ring of the bathtub and / or lower areas of the shower, the cloth is preferably used to clean other normally less dirty areas in the bath / shower area, including the flat upper portions of the bath, the tiles above the bath if present, the connecting lines if present, the walls and fittings. Throughout the cleaning process, the cleaning cloth is preferably reactivated, as necessary, to release the assets until the cloth is practically depleted of active or the cleaning work has been completed. To better visualize treated and untreated areas, the cleaning chemistry is designed, preferably, to generate significant levels of foam. This allows users to better estimate the performance of the product. To help visualize the use of the product and the consumption of the product, a dye or ink is also incorporated as part of the cleaning cloth chemistry. The loss of color of the cleaning cloth indicates that the cleaning composition has run out. The ability to point to the end point by using a pH-sensitive dye can also be improved. Especially for the significantly acidic and alkaline compositions, the colorant may be selected to change color or to completely lose color as the pH of the cloths changes upon depletion of the chemical composition. Article In one embodiment, the article for cleaning the surfaces of the bathroom can be adapted particularly and efficiently to clean the soap residue and the stains by limescale in the bath and shower. The article includes a disposable cleaning cloth comprising at least one nonwoven substrate having a basis weight of from about 20 g / m2 to about 200 g / m2, and a density of at least 0.15 g / cm3 and a composition cleaner comprising at least about 5% surfactant and at least about 3% of one or more organic or inorganic acids or at least about 3% of one or more sequestrants. It is a particular feature of the articles herein that the cleaning composition is applied on said nonwoven substrate, at a certain weight ratio of the composition per area of the substrate. The weight of the cleaning composition per area in said nonwoven substrate is from about 0.005 g / cm2 to about 0.60 g / cm2, more preferably from about 0.015 g / cm2 to about 0.30 g / cm2, and most preferably from about 0.025 g / cm2 to about 0.20 g / cm2. In one embodiment, the nonwoven substrate can be a laminate of at least 2 layers of nonwoven material forming two sides, at least one of which is useful for cleaning; the compositions can be loaded onto any or any number of substrate layers comprising the cleaning cloth as long as the cleaning composition is able to migrate to the cleaning side and then applied to the surface to be cleaned during the cleaning operation. Preferably, the cleaning composition is applied directly on the cleaning side of said laminate. The compositions in liquid form will normally drain in and through the various layers of the cleaning cloth. In a preferred embodiment of the article herein, the cleaning composition is in the form of a paste and the paste is incorporated on or into the cleaning cloth. A non-limiting example of how paste compositions can be incorporated onto non-woven substrates is discussed in the U.S. patent application publication. publication no. 2003/0121530 of Borgonjon et al., Published July 3, 2003, and assigned to The Procter & amp;; Gamble Company. In one embodiment, the dough is loaded onto the face of a substrate layer of non-woven material, which may or may not be laminated to other non-woven substrates, the dye is colored (i.e., a color different from that of the substrate), is easily visible on the cleaning cloth, and can be touched directly by the user without removing any of the layers of nonwoven material that may lie on the outer part of the nonwoven fabric layer comprising the dough. The paste is preferably charged directly on one of the sides of the substrate layer of nonwoven material of the cleaning cloth, thereby advantageously placing the cleaning actives in contact close to the surface to be cleaned. Alternatively, the paste can be loaded on the outer side of a non-woven substrate and then, it can be covered with layers of low density nonwoven material that lie on top of the paste, allowing the user to easily visualize and touch the paste through of the outer layers that do not contain paste. By 'low density', it is meant that the outer layer has a density of about 0.0005 g / cm3 to about 0.1 g / cm3, more preferably from about 0.001 g / cm3 to about 0.09 g / cm3. These outer layers are preferably thick non-woven structures to help generate foam. The article herein preferably includes an outer layer of lightweight fabric designed to help scrub the surfaces to be cleaned. For example, a layer of low density polyester sandwiched between the pulp and an outer layer of lightweight fabric will allow the flow of paste and / or water-solubilized paste to the hard surface, and also help to generate foam as a result of the friction created. by the surfactant solution running through the high-density polyester substrate and lightweight, highly ventilated fabric. As such, it is very beneficial to incorporate advantageous rheological properties in the pulp to maximize the flow of the pulp to the surface to be cleaned and promote the rapid dissolution of the pulp to form concentrated solutions for cleaning.

In one embodiment, the article herein consists of said cleaning cloth, and the method herein depends on the use of cleaning cloths by hand. To facilitate and encourage use by hand, the substrate is preferably covered with cleaning paste in one of the outer layers of nonwoven material of the cleaning cloth, so that it is easily visible and can be touched directly by the user without removing any of the the layers of the nonwoven substrate. In one embodiment, a sleeve can be formed by attaching a layer of non-woven material to one side of the cleaning cloth. In a preferred embodiment, this layer of nonwoven material is connected to a non-wiping side of the cloth (i.e. a side not useful for cleaning such as for example a barrier layer or waterproof layer). Once attached, this sleeve provides a cavity that allows a consumer's hand or fingers to be easily fitted and removed. The incorporation of a cavity in the design of the cloth allows consumers to create pressure points as necessary on the cloth, thus facilitating the cleaning process. The cavity also allows greater control of the cloth and provides protection against the adverse effects of concentrated and potentially aggressive chemicals embedded in the substrate. In a preferred design, the cavity is advantageously operated both as a coupling mechanism to the implement head (see below) and as a means to accommodate the user's hand or fingers to improve comfort and cleaning efficiency.

In another embodiment, the articles herein consist of an implement to which the wipers are attached, preferably removably. In one embodiment, a cleaning implement comprises a handle to allow a user to clean a surface of the bathroom with the disposable cloth while limiting the contact of the user's skin with the cleaning cloth and the cleaning composition during the cleaning operation. In a preferred embodiment, the cleaning implement for use herein comprises a mop head to which the cloth is attached. An example of a cleaning implement suitable for use with the cleaning cloth of the present invention is described in the US provisional patent application. no. of series 60 / 499,851 to Goh et al., filed on August 27, 2003, and assigned to The Procter & Gamble Company. A suitable cleaned implement may include a post that is preferably rotatably connected to a mop head. The post can be any pole known in the industry, such as a segmented pole, telescopic pole, folding pole and can be made of any suitable material. The mop head can have any dimensions and any shape. Preferably, the mop head has a top and bottom surface region that are relatively flat and optionally textured. The shape of the implement head, in particular the lower surface area of the implement head, may be circular oval, plate, triangular, square, rectangular, trapezoidal, pentagonal or hexagonal shape. In a preferred embodiment, the mop head is malleable and flexible so that it easily adjusts to the rounded contours of non-flat surfaces such as bathtubs. Flexibility can be achieved by manipulating the material that constitutes the head of the implement; the head of the implement is preferably manufactured at least partially from polyurethane or other foam, ethyl vinyl acetate or a rubber form or any other material that ensures flexibility. The dimensions of the cleaning cloth attached to the implement can be smaller, the same size or larger than the dimensions of the head of the implement. Preferably, the dimensions of the cleaning cloth are sufficient to cover the entire underside of the face of the implement head, and more preferably they are larger at some points to the extent that the cloth hangs beyond the perimeter of the region of the implement. bottom surface of the implement head on at least part of one side or more. The protrusion of the cloth beyond the perimeter of the underside of the implement head allows the user to put pressure on at least a portion of one side of the implement head, allowing the protruding portion of the cloth to rest on the side of the implement head to improve the leverage effect to scrub dirt difficult to clean or to penetrate deeply into edges, grooves, or bond lines of surfaces. This is especially useful for cleaning mold stains. In a preferred embodiment, at least one of the sides of the mop head is made of a harder material than the rest of the sides to encourage its use, preferably in combination with the protruding substrate, to scrub or penetrate the line of Union. The protruding part of the cleaning cloth may also advantageously comprise one or more abrasive materials to facilitate the action of scrubbing and cleaning the bond line. In a preferred embodiment, the cloth has on one side a textured abrasive surface formed of nodes and / or striations of abrasive material applied thereon, the abrasive material preferably having a hardness of about 40 to about 100 Shore D units using a tester of hardness Bareiss HHP 2000 Shore. The abrasive material allows the cloth to produce a soft scouring or abrasive action to help mechanically remove soap residue, hard water, and combinations of these, from surfaces in bathtub and shower cabins. The abrasive material can cover from about 5% to about 50% of the external surface area of the side of the cloth in which it is located. The clamping mechanism between the cleaning cloth and the implement head can be any known in the industry. For example external clamping mechanisms such as elastic bands, belts or elastic belts can be used to secure the cleaning substrate at the head of the implement. More preferably, at least part of the clamping mechanism is housed on or in the head of the implement. Non-limiting examples of these fastening mechanisms include adhesives, hook fasteners and / or rings such as VELCRO®, structures cut lengthwise such as those found in the heads of mop implements to remove SWIFFER® dust, pins, fibers , clips and clamps. By adhesives, it refers to sticky polymers such as polyisobutylene and pressure sensitive adhesives such as those sold by HB Fuller under the names HL-1496, HL-1500, HL-1597, HM-1902, HM-1972, HM-2713 and the similar. The adhesives are preferably selected to be chemically resistant and water resistant, and are located on the underside of the implement head. When hooks are used, they are preferably located on the underside of the implement head, that is, oriented towards the surface to be cleaned. The cloth then requires hoops that are congruent with the hooks of the implement to complete the holding mechanism. The bristles are well known in the industry, particularly in the context of toothbrushes and scrubbing tools for cleaning hard surfaces. In the context of the present invention, the bristles on the underside of the implement head can be used to hold the cleaning cloth on the implement head. Preferably, the bristles are selected to penetrate the cleaning cloth, without causing damage to the integrity of the cloth. One advantage of the bristles is a large number of attachment points between the implement head and the cleaning cloth; Another advantage is that the bristles, in combination with the cleaning cloth, can provide effective scrubbing, both real and perceptual, while limiting the possibility of damage to the surface. The individual strands of the bristles can be made of any material known in the industry such as polyethylene, polypropylene, polyesters, polyamides (eg nylon variants), and mixtures thereof. In one embodiment, the length of the bristle strands is from about 0.5 cm to about 6 cm, preferably from about 0.5 cm to about 5 cm. The width or diameter of the bristle strands may be from about 0.01 mm to about 5 mm, preferably from about 0.02 mm to about 3 mm, most preferably from about 0.03 mm to about 2 mm. The strands are preferably grouped in bundles that are separated from each other and fastened or joined to the region of the undersurface of the implement by means of methods known in the industry. In one embodiment, the space between the bunches is from about 0.25 cm to about 3 cm, preferably from about 0.5 cm to about 2 cm. The bristles can cover the entire area of the underside of the implement head, or they can be placed at specific points such as at the front end of! implement to encourage the use of bristles as specific pressure points in the head of the implement. In one embodiment, the clamping mechanism between the cleaning cloth and the implement head can be completely located on the substrate. For example, a jacket can be attached on all sides except one of the cleaning substrate, preferably one side perpendicular to the longest axis of the implement head, to form a cavity of sufficient size to accommodate at least a portion of the implement head. , preferably along the width of said head of the implement, thus ensuring part of the cleaning cloth on the head of the implement, preferably along the width of said head of the implement. The size of the cavity can be adjusted depending on the desired adjustment between the substrate and the implement. Preferably, the size of the cavity is sufficient to accommodate from about one twentieth to about one-half of the surface area of the implement head, more preferably from about one-fifteenth to about one-third of the surface area of the implement. In a preferred embodiment, the cavity is advantageously operated both as a fastening mechanism at the head of the implement and as a means for housing the user's hand or fingers to improve comfort and cleaning efficiency. A combination of clamping mechanisms can also be used to attach the substrate to the implement head. For example, the head of the implement may comprise one or more fasteners and one or more pins. In a preferred embodiment, the clamping mechanism includes a combination of one or more structures cut along and at least one sleeve incorporated in the cleaning substrate. The number of fastening points between the cloth and the head of the implement is a matter of comfort as long as the cloth can be attached easily and firmly to the head of the implement. Non-limiting examples of fastening mechanisms for securing a cleaning cloth to a cleaning implement, in addition to cleaning cloth structures suitable for use with any cleaning composition described herein, are discussed in the US provisional patent application. no. in series 60 / 499,851, co-pending, from Goh et al., filed on August 27, 2003, and the US provisional patent application. no. of series 60 / XXX, XXX, co-pending, by Lynde et al., filed on December 3, 2003, both assigned to The Procter & Gamble Company. In a preferred embodiment, the disposable cleaning cloth includes at one end a cavity for receiving at least a portion of the handle or the mop head of a cleaning implement. If necessary, the other end of the cleaning cloth can also be secured to the cleaning implement by means of a structure or clamping mechanism known in the industry. The implement herein may include a water dispenser container for the activation step with water and / or for the rinsing step. Water delivery can occur by squeezing the container or using a trigger sprayer or other mechanical means, or by means of a trigger or battery operated. The bottle or container of the water dispensing device can be made of any material, including low or high density polyethylene, and can be of any volume, preferably from about 50 mL to about 3000 mL. The container and trigger mechanism, if any, may reside on the implement head or be attached, fixed or attached to the handle. Preferably, the trigger mechanism is located on, most preferably incorporated into, the handle most preferably at the top of the handle, for the user's convenience. Trigger activation results, preferably, in the easy dispatch of significant amounts of fluid in a stream. Preferably, the coverage on a wall for an activated rinse container 15 cm away from a wall is at least about 20 cm wide, more preferably at least about 30 cm wide, most preferably at least about 40 cm wide. Examples of preferred dispensing devices that may be incorporated in the implement herein include those described in U.S. Pat. no. 6,540,425 and the publication of the U.S. patent application. no. 2003/0133740 of Policicchio et al., Published July 17, 2003, and assigned to The Procter & amp;; Gamble Company. The water dispensing unit can be used in combination with a rubber squeegee (see below) for a faster and more efficient rinsing and drying of the bath / shower / wall surface of the bath. Cleaning Composition In a third major embodiment, the present invention relates to cleaning compositions, which are preferably used in the method and articles of the present invention. The present cleaning composition may be in paste or aqueous form and is especially directed to removing soap residue and lime scale. There are two types: an acid type with a pH (10% solution of said composition) of 0.5 to 6, and neutral or alkaline type with a pH (10% solution of said composition) of about 6 to 12. Both compositions comprise at least about 5% surfactant, preferably at least about 7.5% surfactants, more preferably at least about 10% surfactants, more preferably at least about 12.5%, even more preferably at least about 15% and most preferably at least about 20% surfactants. The present compositions preferably comprise at most about 80% surfactants, more preferably at most about 70% surfactants, even more preferably at most about 60% surfactants, and most preferably at most 50% surfactants. The preferred ranges will depend on the proposed benefits (eg foam level and cleanliness) and costs. Any range consists of a maximum level and a previously defined minimum level that can be used. However, in a highly preferred embodiment, the compositions comprise from about 25% to about 50% surfactants. The two types of compositions are selected to provide bath cleaning benefits under different pH conditions. At a neutral or alkaline pH, the sequestrants are effective to remove group II metals from insoluble deposits comprising soap residue, hard water and mixtures thereof. At an acid pH, the sequestrants are at least partially protonated and therefore are ineffective for chelating metals. However, acidifying agents are effective for removing metals, in particular Ca ++ and Mg ++, which are the key materials in the creation of soap residue and limescale in the bath. Anionic surfactants are suitable and very desirable for use in the present invention. Here, the anionic surfactants typically comprise a hydrophobic hydrocarbon chain comprising from about 8 to about 18 carbon atoms, preferably from about 8 to about 16 carbon atoms, and usually includes at least one hydrophilic carboxylate backbone group, sulfate or sulfonate. Among the anionic surfactants, surfactants comprising sulfonate functional groups are preferred for use herein, in particular if the pH of the composition impregnated on the cloth is less than about 3.0. Sulfonate surfactants are preferred because the sulfonate group is not susceptible to acid catalyzed hydrolysis. Non-limiting examples of sulfonate surfactants suitable for the present invention include C8 sulfonate sold by Stepan under the tradename of Bio-Terge® PAS-8S, C8-C paraffin sulphonates? 8 sold by Hoechst under the trade name Hostapur® SAS, and C? O-C1, more preferably linear or branched C11-C13 alkylbenzene sulphonates, available from Pilot Corporation or Stepan Corporation under the trade names of Bio-Soft® and Nacconol®, in particular those described in US patents num. 2,220,099 and 2,477,383. Other suitable sulfonates include ethoxylated alkyl sulfonates and alkylglyceryl ether sulfonates. Examples of sulfate surfactants include C8-16 alkyl sulfates (eg Stepan® AM from Stepan) and ethoxysulfates (eg the Stepan® CS series from Stepan). Zwitterionic surfactants can also be used in the context of the present method for cleaning the bath. Zwitterionic surfactants contain both cationic and anionic groups in the same molecule, in a wide range of pH. The typical cationic group is a quaternary ammonium group, although other positively charged groups such as sulfonium and phosphonium groups can also be used. Typical anionic groups are carboxylates and sulfonates, preferably sulfonates, although other groups such as sulfates, phosphates and the like can be used. Some common examples of detergents are described in the patent literature: US Pat. num. 2,082,275, 2,702,279 and 2,255,082. Zwitterionic surfactants are particularly beneficial in the context of low pH aqueous compositions (eg pH 0.5-3) because they are mildness agents that attenuate hardness due to high acidity, particularly in the presence of anionic surfactants. . A generic formula for some preferred zwitterionic surfactants is: wherein R is a hydrophobic group; each R2 and R3 is a C1-4 alkylhydroxyalkyl or other substituted alkyl group, which can be linked with N to form ring structures; R 4 is an entity that joins the cationic nitrogen to the hydrophilic anionic group and is usually an alkylene, hydroxyalkylene or polyalkoxyalkylene containing from one to four carbon atoms; and X is the hydrophilic group, more preferably a sulfonate group. A specific example of a "simple" zwitterionic surfactant is 3- (N-dodecyl-N, N-dimethyl) -2-hydroxypropane-1-sulfonate (iauryl hydroxysultaine) available from Mclntyre Company (24601 Governors Highway, University Park, Illinois 60466 , USA) under the trade name of Mackam LHS®. Other specific zwitterionic surfactants have the following generic formula: R-C (0) -N (R2) - (CR32) n-N (R2) 2 + - (CR32) n-S03-, wherein each R is a hydrocarbon, for example an alkyl group containing from about 6 to about 20, preferably up to about 18, more preferably up to about 16 carbon atoms; each (R2) is hydrogen (when attached to the nitrogen amido), short chain alkyl or substituted alkyl containing from about 1 to about 4 carbon atoms, preferably the groups selected from the group compng methyl, ethyl, propyl, ethyl substituted with hydroxyl and propyl and mixtures thereof, more preferably methyl; each (R3) is selected from the group compng hydrogen and hydroxyl groups, and each n is a number from about 1 to about 4, more preferably from about 2 or about 3, most preferably about 3, with no more than about 1 hydroxyl group in any entity (CR32). Although they are generally classified as zwitterionic or amphoteric, the betaines become more cationic as the pH is reduced due to the protonation of the anionic carboxylate group, and they function practically as cationic surfactants at a pH below about 5. To a pH of about 5 and higher, betaines are zwitterionic surfactants. Betaines are very preferred components in the present invention because they act as excellent foaming surfactants and softness agents. Betaines attenuate the strong effects of anionic surfactants and this is particularly important at an acidic pH. In its neutral form, betaines have the structure R-N (RV- (CR 2) n-COO-, wherein R is a hydrocarbon, p. ex. an alkyl group containing from about 6 to about 20, preferably up to about 18, more preferably up to about 16 carbon atoms, each (R1) is an alkyl or substituted short chain alkyl containing from about 1 to about 4 atoms of carbon, preferably of groups selected from the group compng methyl, ethyl, propyl, ethyl and propyl substituted with hydroxy and mixtures thereof, more preferably methyl, (R2) is selected from the group compng hydrogen and hydroxyl groups, and n is a number from about 1 to about 4, preferably about 1. In another embodiment, "amido propyl betaines" may be used, particularly in the context of compositions with a pH of at least about 2, more preferably at least about 2.5, and most preferably a pH of at least about 3. The preference for higher pH values comes from the pot by the acid-mediated hydrolysis of the amide group at low pH. These betaine surfactants may have the generic formula: R-C (0) -N (R¿) - (CRJ2) n-N (R¿) 2 - (CRJ2) n-COO-, wherein each R is a hydrocarbon, for example an alkyl group containing from about 6 to about 20, preferably up to about 18, more preferably up to about 16 carbon atoms, each (R2) is hydrogen (when it is attached to the nitrogen amido), short chain alkyl or substituted alkyl containing from about 1 to about 4 carbon atoms, preferably groups selected from the group compng methyl, ethyl, propyl, ethyl substituted with hydroxyl and propyl, and mixtures thereof, with greater preference methyl; each (R3) is selected from the group comprising hydrogen and hydroxyl groups, and each n is a number from about 1 to about 4, more preferably about 2 or about 3, most preferably about 3, with no more than about 1 hydroxyl group in any entity (CR32). The R group can be linear or branched, saturated or unsaturated. The R2 groups can also be linked to form ring structures. A very preferred surfactant of this type is Mackam 35HP®, a cocoamidopropylbetaine produced by McIntyre. Amphoteric surfactants are another class of surfactants useful in the present invention. These surfactants are similar to zwitterionic surfactants but lack a quaternary nitrogen atom. Under conditions of acid pH, below about pH 5, amphoteric surfactants comprising carboxylate anionic groups function essentially as cationic surfactants. A suitable amphoteric surfactant is a C 8 -C 16 alkyleneamido glycinate surfactant ('amphollycinate'). Another suitable amphoteric surfactant is a C 8 -C 16 alkyleneamidopropionate surfactant ('ampropropionate'). These surfactants have the generic structure: R-C (0) - (CH2) n-N (R1) - (CH2) x -COO-, wherein RC (O) - is a prehydrophobic fatty acyl portion of about C5 to about C15, each n is from about 1 to about 3, each R1 is preferably hydrogen or a C1-C2 alkyl or hydroxyalkyl group, and x is about 1 or about 2. These surfactants are available, in salt form, from Goldschmidt Chemical under the tradename Rewoteric AM®. Examples of other suitable amphoteric surfactants include cocoyl amido ethylenamine-N- (methyl) acetates, cocoyl acetates ethyleneamino-N- (hydroxyethyl), cocoyl amido propyleneamine- N- (hydroxyethyl), dodecyl beta-alanine, N- alkyltaurines and analogs and mixtures thereof. N-higher alkylapartic acids such as those produced in accordance with the teachings of U.S. Pat. no. 2,438,091, and the products sold under the trade name "Miranol®", and described in U.S. Pat. no. 2,528,378. Cationic surfactants can be used in the present invention. As described herein, cationic surfactants are surfactants comprising a quaternary nitrogen atom, or at a pH of less than about 8, surfactants with primary, secondary or tertiary amine functional groups that are protonated. In addition, betaines and amphoteric surfactants comprising carboxylate functional groups can also be classified as cationic at a pH of less than about 5. Cationic surfactants comprising quatemized nitrogen atoms have the structure: R-N + (R2) (R3) (R4) X " wherein R is a C8-C18 alkyl group, R2 and R3 are C8-18 alkyl groups, CH3, C2H5 or CH2OH, OCH3, OCH2-CH3, CH2-CH2OH, or CH2-C6H5 and R4 is CH3 or (EO) x where EO is an ethoxylate unit (CH2-CH2-0), x is from about 1 to about 12, and X "is a counter ion such as CI", Br ", HC03" CH3S03"and the like. Cationics comprising quaternary nitrogen atoms include the alkyl dialkyl dimethyl ammonium chloride surfactants available from Lonza under the tradename Bardac®, and the alkyl benzylammonium chloride surfactants also available from Lonza under the tradename Barquat®. formed by the protonation of amines have the structure: R- R-N + (R2) (R3) (R4) X ', wherein R is a C8-C18 alkyl group, R2, R3 and R4 can be H, CH3, C2H5, CH2OH, OCH3, OCH2-CH3, CH2-CH2OH, CH2-C6H5 or (EO) x where EO is an ethoxylate unit (CH2-CH2-0), x is from about 1 to about 12, and X "is a counter ion such as but not limited to CI", Br ", HC03" CH3S03"and the like, with the proviso that at least one of R2, R3 and R4 is H. An example of a suitable cationic surfactant formed by the protonation of an amine is Ethomeen® C / 12, a coconut-based amine with the structure C12-C? 4N-EO (EO) , manufactured and marketed by Akzo-Nobel Corporation Nonionic surfactants can be used in the context of the present invention Examples of preferred nonionic surfactants include alkyl ethoxylates comprising from about 8 carbon atoms to about 16 carbon atoms and from about one to about ten portions of ethylene oxide available from Shell Chemical under the trade name Neo dol® (North America) or Dobanol® (Europe) and Condea under the trade name of Alfonic®. Among the alkyl ethoxylates, those comprising from about 8 to about 10 carbon atoms in the hydrophobic portion are preferred and have an average of about 1 to about 6 portions of ethoxylate, in particular the "narrow distribution" ethoxylation as described in U.S. Pat. no. 5,698,041 incorporated herein by reference. Other suitable nonionic surfactants include those which comprise a head group which includes at least a portion of alkoxylate which is not an ethoxylate. Alkoxylate units are usually propoxy or butoxy functional groups and can be incorporated into surfactants that further comprise ethoxylate groups, producing for example alkyl ethoxy propoxylates. These compounds are commercially available under the trade name Antarox® available from Rhodia and under the trade name Nonidet® available from Shell Chemical. Another class of nonionic surfactant suitable for the present invention is amine oxide. The amine oxides, in particular those comprising from about 8 carbon atoms to about 14 carbon atoms, are excellent cleaning surfactants for use with the method of the present invention. Amine oxides can be purchased from Stepan Corporation or The Procter & amp;; Gamble company. The fluorinated nonionic surfactants are also suitable for use in the present invention. A particularly suitable fluorinated nonionic surfactant is Fluorad F170 (3M Corporation, 3M Center, St. Paul, MN, USA). Silicon-based surfactants are also suitable for use in the present invention. An example of these types of surfactants is Silwet L7604 available from Dow Chemical. Other suitable nonionic surfactants include the condensation products of ethylene oxide with a hydrophobic base formed by the condensation of propylene oxide with propylene glycol are also suitable for use herein. Examples of compounds of this type include some of the Pluronic® surfactants commercially available and marketed by BASF. Chemically, these surfactants have the structure (EO) x (PO) and (EO) 2 or (PO) x (EO) and (PO) z where EO refers to ethoxylate units, PO refers to the propoxylate units , and x, y, and z are from about 1 to about 100, preferably about 3 to about 50. Other nonionic surfactants that may be used include those derived from natural sources such as sugars and include N-alkyl glucosamide surfactants. Ci6 and C8-C16 alkyl polyglycosides (APG). Among the APG surfactants, those comprising an average of about 8 carbon atoms to about 11 carbon atoms and a degree of oligomerization of the glycoside, preferably glucoside units of about 1.1 to about 1.8, are preferred. Examples of commercially preferred APG surfactants include Glucopon® 225, Glucopon® 425, APG 325®, Plantaren® 2000 N UP and Plantacare® 818 available from Cognis Corporation. Still other nonionic surfactants, although not preferred, include the polyethylene oxide condensates of C8-C2 alkylphenols with ethylene oxide, said ethylene oxide being present in amounts equal to about 10 to about 25 moles of ethylene oxide per mol of alkylphenol. In a preferred embodiment of the invention, the compositions are acidic. The pH of the acid compositions for use herein is from about 0.5 to about 6, more preferably from about 1.5 to about 5.5, most preferably from about 2 to about 4.5. When the pH is from about 0.5 to about 2, it is preferred that the cloths be used in combination with an implement to minimize exposure to the skin. The chemical compositions, when they are acidic, comprise at least about 3%, more preferably at least about 5%, still more preferably at least about 6%, still more preferably at least about 8% and with the maximum preference for at least about 10% acidifying agents.

In addition, the compositions comprise at most about 80%, more preferably at most about 70%, more preferably at most about 60%, even more preferably at most about 50% and most preferably at most about 40% of agents acidifying. Preferred ranges will depend on the proposed benefits (eg removal of lime scale against removal of body dirt), level of surface safety and cost. Any range consisting of a minimum level and a maximum level defined above can be used. In a most preferred embodiment, the acidifying agents comprise from about 12.5% to about 30% by weight of the composition. The acid compositions preferably comprise at least one acidifying agent selected from the group comprising acetic acid, adipic acid, aspartic acid, ascorbic acid, fumaric acid, glutaric acid, glycolic acid, hydrochloric acid, iminodiacetic acid, lactic acid, acid maleic acid, malic acid, malonic acid, nitric acid, oxalic acid, phosphoric acid, salicylic acid, sorbic acid, succinic acid, sulfuric acid, sulfurous acid, tartaric acid, and combinations of these. The highly preferred organic acids are selected from the group comprising adipic acid, glutaric acid, succinic acid, lactic acid, maleic acid and citric acid and combinations thereof. For reasons of cost, availability, buffering and regulatory capacity, citric acid is preferred (food grade is desired but not required) and combinations of glutaric and succinic acids (AGS) commercially available from Rhodia Corporation and Dupont Corporation. The preferred organic acids for the invention are phosphoric acid and sulfamic acid. The organic and inorganic acids can be combined in the same paste or aqueous composition as desired or needed. The combinations of maleic acid and phosphoric acid, maleic acid and citric acid, citric acid and phosphoric acid, AGS and maleic acid, AGS phosphoric acid, SFA and citric acid, and any of these individual acids or combinations with sulfamic acid are particularly effective and therefore they are preferred for the combined cleaning of lime scale and soap residue. In another embodiment of the method of the invention, the composition has a pH (10% solution of said composition) of from about 6 to about 12. These compositions comprise sequestering agents. Sequestrants are known materials that bind to metals, particularly Group II metals; more particularly Ions Mg ++ and Ca ++. Sequestrants are preferably used at levels of at least about 3%, more preferably at least about 5%, more preferably at least about 10%, even more preferably at least about 15%, and with the maximum preference for at least about 20% by weight of the composition. In addition, sequestrants are preferably used at levels of at most about 70%, more preferably at most about 60%, even more preferably at most about 50% and most preferably at most about 40% by weight of the composition. Phosphorus-based sequestrants such as aminopolyphosphonates, in particular ethylene diamine tetramethylene phosphonate, hexamethylenediaminetetramethylene phosphonate and diethylenetriaminepentamethylene phosphonate can be used. Many aminopolyphosphonates are available from Monsanto Corporation under the trade name Dequest®. As an alternative, phosphorus-containing additives, in particular the sodium and potassium salts of phosphoric acid, can be used. More preferably, the sequestrants are not phosphorus based. One class of sequestrants includes oligomers and polymers comprising polycarboxylic acids. For example, butane tetracarboxylates, oxydisuccinate and mixtures of succinic acid tartrate and disuccinic acid tartrate as described in U.S. Pat. no. 4,663,071, salts of polyacrylic acid and polymethacrylic acid, polymers and copolymers comprising monomers of acrylic acid and methacrylic acid or their salts, all can be used as sequestrants. Even more preferably, the sequestrant is selected from the group comprising aminopolycarboxylic acids. Examples of sequestrants based on aminopolycarboxylic acids include those of the general formula: A-N (A) -CH2-CH2-N (A) -B, wherein A represents -CH2-COOH or -CH2CH2-COOH, and B represents CH2-COOH, -CH2CH2-OH, -CH2CH2-N (CH2-COOH) 2, or -CH2CH2-N (CH2-COOH) -CH2CH2- N (CH2-COOH) 2. In each case, the carboxylic acids are preferably neutralized at least partially, more preferably completely, so that the sequestrants are more effective. The neutralizing cations are those known in the industry, for example sodium, potassium, ammonium and alkanolammonium, particularly ethanolammonium and triethanolammonium. Polymeric aminocarboxylic acids, particularly polyaspartic acid and associated salts can also be used. Preferred sequestrants include nitrilotriacetic acid (NTA), methylglycineadiacetic acid (MGDA), ethylenediaminetetraacetic acid (EDTA), N-hydroxyethylenediaminetriacetic acid, ethylenediaminetriacetic acid, diethylenetriaminepentaacetic acid (DTPA), ethylene glycine, ethylenediamine disuccinic acid (EDDS, see US Pat. No. 4,704,233) and the salts and mixtures thereof. Most preferred are the sodium, potassium, ammonium and alkanolammonium salts (in particular ethanolammonium and triethanolammonium) or the partial salts (the incomplete neutralization of the acid form of the sequestrant) of NTA, MGDA and EDTA. In a highly preferred embodiment, the neutral to alkaline pH compositions in paste or aqueous form at a pH of from about 7 to about 11, and comprise at least 10%, more preferably at least about 15%, more preferably at least about 20%, still more preferably at least about 25%, most preferably at least about 30% surfactant, and at least about 10%, more preferably at least about 15%, with the highest preference for at least about 20% of one or more sequestrants selected from the group comprising sodium, potassium or ammonium nitrilotriacetate, sodium methylglycine, potassium or ammonium diacetate, trisodium ethylenediamine, tripotassium or triamone, and mixtures thereof. The aforementioned compositions may optionally comprise from about 0.1% to about 5% of a precipitating co-additive such as described in U.S. Pat. no. 6,245,728, including potassium carbonate and potassium oxalate for greater removal of soap residue. The compositions, whether of acid, neutral or alkaline pH, preferably include at least one or more hydrotropes. When present, the hydrotropes are present at a level of at least about 3%, more preferably from about 3% to about 40%, more preferably from about 5% to about 30%, even more preferably about 7.5. % to about 30% and most preferably from about 10% to about 25% by weight of the composition. The hydrotropes can satisfy many important functions within the scope of the compositions of the present method. First, they help reduce the packaging of surfactants. It is believed that this helps the foam profile of the composition containing the longevity of the foam, and improving the rinsing. The decrease in surfactant packaging also aids the kinetics of activation with water, allowing water to penetrate, dissolve and release surfactant monomers and other active ingredients including solvents more quickly. It is believed that this is beneficial, since the rapid release of assets results in a longer residence time of the assets on the dirty surfaces during the cleaning process, leading to better results. As used herein, the hydrotropes are preferably selected from the group comprising salts of toluene sulfonate, xylene and eumeno available from Ruegers-Nease Corporation under the trade name Naxonate®, disulfonate salts of hexyl ether, decyl - and dodecyl diphenyl available from the Dow Chemical Company under the trade name Dowfax®, C4-C6 and C8 alcohol ethoxylates available from Condea Corporation under the trade name Alfonic®, C4-C6 alkyl glucoside available from Seppic Corporation, the salts of 2-ethyl-1-hexyl sulfate available from Rhodia Corporation under the trade name of Rhodapon®, mono- and di- (2-ethyl-1-hexyl sulfosuccinate) salts available from Cytec Industries under the trade name Aerosol®, and C8-C22 alkyl ethoxylates having an HLB greater than about 12 available from Hunstman Corporation with the trade name of Surfonic® (eg Surfonic L24-22); and mixtures of these. The present composition also preferably includes one or more organic cleaning solvents. As used herein, organic cleaning solvents are those chemical compounds that exist as liquids at 25 ° C and comprise at least four carbon atoms. The level of solvent in the present compositions is preferably from about 1% to about 40%, more preferably from about 3% to about 30%, even more preferably from about 5% to about 25%, with the maximum preferably from about 5% to about 20% by weight of the cleaning composition. Organic cleaning solvents include hydrocarbon based solvents, Cß-C-io esters, organic diols and glycol ethers. Examples of hydrocarbon-based solvents include α-pinene, α-pinene, d-limonene, paraffins and C 8 -C 20 isoparaffins such as those sold by Exxon under the trade name Isopar®. Examples of preferred diols include 1,2-hexanediol, 1-2-octanediol and 2-ethiM, 3-hexanediol. Examples of preferred esters include the C8 and C10 methyl, propyl and butyl esters; for example a very pure C10 methyl ester available from Procter & Gamble Company with the trade name of CE-1095®. In a preferred embodiment, at least one glycol ether solvent is incorporated into the compositions of the present invention. Preferred glycol ethers have a terminal C3-C8 hydrocarbon attached to one to three portions of ethylene glycol or one to three portions of propylene glycol to provide the appropriate degree of hydrophobicity, wetting and surfactancy. Most preferred for use in the compositions of the present invention are glycol ether solvents comprising one or two portions of ethylene oxide and a C4-C6 alkyl chain, or two to three portions of propylene oxide and a C3 chain -C8 terminal. Examples of commercially available preferred glycol ether solvents include tripropylene glycol methyl ether, dipropylene glycol n-butyl ether, dipropylene glycol n-propyl ether, tripropylene glycol n-butyl ether, tripropylene glycol n-propyl ether, ethylene glycol n-hexyl ether and diethylene glycol n-hexyl ether, all available from Dow Chemical. Another preferred glycol ether is 2-ethyl-1 -hexyl ether of ethylene glycol available from Eastman Chemical under the trade name of solvent EEH®. The compositions may optionally include one or more polymers for additional benefits. These include hydrophilic water-laminating polymers to prevent dirt build-up, stain-release polymers to reduce dirt adhesion on hard surfaces, and gloss or luster polymers to improve the visual appearance of surfaces. Preferred polymers include the polysaccharides found in nature, such as xanthan gum, guar gum, locust bean gum and synthetic polysaccharides such as carboxymethylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose. Other suitable polymers include those derived from N-vinylpyrrolidone, including polyvinylpyrrolidones (molecular weight 10,000 to 200,000) and copolymers formed by reacting N-vinylpyrrolidone with acrylic acid, methacrylic acid, itaconic acid, caprolactam, butene or vinyl acetate. Still other suitable polymers comprise sulfonate and amine oxide functional groups such as polyvinyl pyridine N-oxide (molecular weight of 1000 to 50,000), polyvinyl sulfonate (molecular weight of 1000 to 10,000), and polyvinyl sulfonate and styrene (molecular weight of 5,000) to 1,000,000). Other preferred polymers include the amphoteric copolymer derivatives of DADMAC / acrylic acid / acrylamide copolymer, DADMAC / maleic acid copolymer, and DADMAC / sulfonic acid copolymer described in U.S. Pat. no. 6,593,288, incorporated herein by reference. These polymers provide excellent water lamination and are found to improve the shine of enamel and other surfaces. Still other suitable classes of polymers include polyethylene glycols (molecular weight of 5,000 to 5,000,000), modified polyethyleneimines such as Lupasol SK sold by BASF (molecular weight of 100,000 to 5,000,000). The most preferred polymers are polystyrene sulfonate (molecular weight 10,000-80,000), polyvinylpyridine N-oxide (2000-30,000), polyvinylpyrrolidone (molecular weight 30,000 to 100,000), and DADMAC / acrylic acid / acrylamide polymers sold by Rhodia under the trade name Mirapol® HSC-300. The compositions may include one or more abrasive agents. When present, the abrasive agents comprise from about 8% to about 50%, more preferably from about 10% to about 40%, most preferably from about 15% to about 35% by weight of the composition. The inorganic abrasives are preferably selected from the group comprising quartz, siliceous chalk, diatomaceous earth, and colloidal silicon dioxide. The organic abrasives are selected from the group comprising polyethylenes, polypropylenes, polyesters, polystyrenes, polycarbonates, polyacetals, urethane resins, melamine and mixtures thereof. The particle size of these abrasives is preferably from about 10 microns to 200 microns, more preferably from 20 microns to 100 microns, and most preferably from about 25 microns to about 75 microns. Examples of suitable abrasives are described in U.S. Pat. no. 6,458, 753 incorporated herein by reference. Small amounts of additives can be added to improve the cleaning performance of the cloth. These include lower alcohols, including ethyl alcohol, isopropyl alcohol and the like. Thickeners, in particular xanthan gum, guar gum, and high molecular weight crosslinked polyacrylate derivatives sold by BF Goodrich Company under the tradename Carbopol®, may be included. Enzymes can be included, in particular in the pulp product where they can be protected until the cloth is activated with water. Antibacterial agents may also be incorporated herein, including quaternary ammonium compounds, salts of chlorhexidine (diacetate and digluconate) and poly (hexamethylene biguanide) and salts thereof (eg hydrochloride). Also preferably included are cosmetic aids such as buffers, dyes and perfumes. Paste Compositions Paste compositions are highly preferred in both embodiments of the present cleaning compositions. The pastes can be manufactured, sold and marketed in containers so that the user can reach into the container and apply some of the contents directly to the hard surfaces using, for example, sponges based on cellulose, chamois, cloths, rags, scourers , paper towels, and the like. The paste can also be pre-loaded onto any of the aforementioned cleaning carriers (in particular melamine structures), or it can be incorporated into films or into bags made of polyvinyl alcohol (partially or totally hydrolyzed polyvinyl acetate), polyvinyl alcohol / acrylic copolymer, polyvinylpyrrolidone, hydroxypropylmethylcellulose, quatemized protein hydrolysates, quatemized polyamines, or other water-soluble materials.

More preferably, the paste is loaded onto the face of one or more nonwoven substrate, preferably nonwoven substrates with a basis weight of about 20 g / m2 to about 200 g / m2, and a density of at least 0.15 g / cm3 oriented to each other and joined together, creating a single-use disposable cleaning cloth. Preferably, the paste is not loaded at the edges of the substrate so as not to interfere with the bonding of the nonwoven substrate. When the cleaning composition is in paste form and loaded onto the disposable cloth, the cleaning efficiency of the cloth can be affected by the amount of paste capable of reaching the external cleaning surface of the cloth. In one embodiment, the single-use disposable cloth comprises an average of at least about 0.005 g of cleaning paste per square centimeter of area of the cleaning cloth, preferably an average of at least about 0.010 g / cm2, more preferably an average of at least about 0.015 g / cm2, and most preferably an average of at least about 0.020 g / cm2. The average amount of cleaning paste per square centimeter of area of the cleaned cloth can be calculated by weighing the total amount of pulp on the cleaning cloth and measuring the area of the cleaning side of the cloth and then dividing the total amount of pulp by the measured area. For a wiping cloth which is generally two-dimensional (ie the Z-dimension is practically insignificant in relation to the dimensions X and Y dimensions of the cloth), it will be understood that "wiping side" means the side of the cloth from which the dough can be dispensed and applied. on the surface to be cleaned during the cleaning operation. It will be understood that in the event that both sides of the cloth can be used for cleaning, only one of the area of the cleaning side is used to calculate the average amount of cleaning paste per square centimeter of area of the cleaning cloth. In one embodiment, the disposable one-use step has an average amount of cleaning paste per square centimeter of cleaning cloth area of less than about 0.60 g / cm2, preferably less than about 0.40 g / cm2, more preferably less than about 0.30 g / cm2, and most preferably less than about 0.25 g / cm2. In an even more preferred embodiment, the average paste content is from about 0.025 g / cm2 to about 0.20 g / cm2. In one embodiment, the total weight of cleaning pastes in the cleaning cloth is from about 3 grams to about 100 grams, more preferably from about 5 grams to about 75 grams, most preferably from about 7 grams to about 60 grams. It is very beneficial to strengthen the Theological properties in the paste to maximize the flow of the paste to the surface to be cleaned and to stimulate the rapid dissolution of the paste to form concentrated solutions for cleaning. It is useful that the pulp exhibits substantial viscoelastic properties and has liquid type properties in response to the placement of an oscillating shearing force in the pulp. When measured over the linear viscoelastic region at a frequency of 10 s- the pulp preferably has a storage modulus G '(solid type stiffness) of about 5000 Pa to about 50,000 Pa, more preferably about 7500 Pa to about 40,000, most preferably from about 7500 Pa to about 30,000 Pa, and a loss modulus G "(liquid type rigidity) in the range from about 1000 Pa to about 10,000 Pa, more preferably from about 1500 Pa to about 8000 Pa, most preferably from about 2000 Pa to about 7000 Pa. The relaxation time, defined as the crossing point between G 'and G "in an experiment where the viscosity is plotted against the frequency at a shearing force constant is, preferably, less than about 1 Hz, more preferably less than about 0.5 hz, most preferably less than about 0.1 hz at 25 ° C. All rheological measurements are performed on a Rheolyst Series AR 2000 style A rheometer, manufactured by T.A. Instruments, Ltd., Europe House, Bilton Center, Cleeve Road, Leatherhead, Surrey KT22 7UQ, United Kingdom. The paste compositions require hydrotrope or solvent. In a highly preferred embodiment, the pastes comprise at least about 3% of one or more hydrotropes (see the section on hydrotropes for specific descriptions applicable to the paste or aqueous product forms). In addition to the benefits already described in the section on hydrotropes, hydrotropes can provide or improve the liquid-like properties (G ") of the paste, thus helping to transfer the cleaning actives to the dirty surfaces.The hydrotropes also help to process or manufacture , in particular for the pastes, to ensure the easier mixing of the components and more fluid process conditions As such, the hydrotropes are surprisingly important components of the detergent pastes of the invention In another preferred embodiment, the pastes comprise at least 1% of one or more organic cleaning solvents, more preferably more than 1% organic cleaning solvents (see the section on solvents for additional solvent descriptions relevant to paste or aqueous compositions) .Preferably, the cleaning solvent organic has a solubility less than about 10%, more preferably lower than about 7%, most preferably less than about 5% in water at 25 ° C. In a particularly preferred embodiment, the solvent is incorporated into the paste at a concentration that exceeds the solubility limit in the solvent water at 25 ° C. It has been found that this can be achieved with the pastes of the present invention, unlike the aqueous compositions, even the concentrated aqueous compositions, for which the water solubility limits define points of chemical instability, placing an upper limit on the permissible concentration of the solvent. Since it is believed that hydrophobic solvency helps to remove highly insoluble soils such as soap residue, the flexibility of including high levels of hydrophobic solvency without concern for the instability of the product or phase provides an enormous advantage to the pastes of the invention. to provide more cleaning power to hard surfaces, particularly bath surfaces including bathtub and shower cabins. Other applications for cleaning hard surfaces that can benefit from the use of pastes comprising solvents in concentrations exceeding the water solubility limit include kitchen tables, pots and pans, ovens, stove tops and kitchen hoods, cups toilets, exteriors of cars, garage floors (eg concrete), grills, walkways, driveways, exterior windows, coatings of houses and the like. The pastes preferably comprise at least one surfactant selected from the group comprising zwitterionic and amphoteric surfactants (see the section on surfactants for a description of zwitterionic and amphoteric surfactants which can be used in paste or aqueous form). These surfactants, in addition to providing good foam, attenuate the hardness of other surfactants, in particular anionic surfactants. The benefits are especially important under extreme pH conditions, such as a pH (10% solution of the paste) of about 0.5 to about 2.5. The most preferred zwitterionic and amphoteric surfactants are the betaines based on lauryl and coconut and the sulfobetaine derivatives. Betaine surfactants comprising a low halogen salt content, preferably less than about 0.15 g of salt per gram of active betaine, more preferably less than about 0.10 g of salt per gram, most preferably less than about 0.05 g of salt per gram of active betaine, are especially preferred . The preference for a low halogen salt content is dictated by the desire to minimize corrosion due to salts such as sodium chloride, potassium chloride, sodium bromide and potassium bromide and the like. Pastes for cleaning dirty surfaces of the bath can advantageously be formulated at a low pH with less concern for human safety than the corresponding aqueous compositions. This is because the paste product does not easily penetrate through the stratum corneum of the skin. Accordingly, pastes of acidic pH can be advantageously prepared at a pH (10% solution) as low as about 1.0, more preferably as low as about pH 1.5, most preferably as low as about pH 2.0 with less risk for human exposure problems. For these compositions, it is highly preferable to include an amphoteric or zwitterionic surfactant to improve softness to the skin. The pastes of the present composition may surprisingly include chemicals that are thermodynamically unstable with respect to chemical decomposition in an aqueous medium. Therefore, chemical raw materials that include surfactants and solvents that comprise functional groups, including esters or amides, can be stabilized at low pH, below about pH 4 by the paste form of the product; further, it has been found that the anionic sulfate surfactants are surprisingly stable under acidic conditions which are in the form of a paste and are less susceptible to hydrolysis than what is observed when they are present in aqueous compositions. The pasta form has several advantages: the pasta form comprises less water, allowing the incorporation of greater cleaning actives into the cleaning cloth. That is, pastes may contain higher levels of organic cleaning solvents, and can coexist more easily with chemicals, including whiteners (see below). The paste can conveniently be extruded on or near a wiper side of the cloth, maximizing the release of the concentrated product on the surface to be cleaned after activation with water. The pastes do not diffuse well in the substrate. A paste form also represents a richer and stronger product. In addition, the paste can be loaded onto a nonwoven substrate so that it is more easily visible to the user. For example, strips, dots, or company / brand logos colored throughout the outer surface of the nonwoven material provides an attractive visual signal of the presence of the cleaner. For example, Mr. Clean® cones, Clorox® Scrubblng Bubbles® can be inscribed on the non-woven substrate by means of the paste in one or more colors. In this way, the paste form of the product provides greater flexibility for aesthetic appeal and differentiation than an impregnated aqueous composition.

In a preferred embodiment, the cleaning operation is performed using two or more separate cleaning compositions wherein at least one is a paste, and the two compositions are brought together during the cleaning operation. The second, third and other compositions may also be in the form of a paste or a solid, or may be a gel, a tablet, or a water-soluble pouch, an isotropic aqueous composition, a microemulsion, or an emulsion. When the second composition is aqueous, it is preferable that it be encapsulated in a bag or the like, or that it be present in the pre-moistened cloth at a level not sufficient to saturate the substrate layer on which it is impregnated. One of the reasons for separating the two or more compositions before the point of use is to allow the benefits of each of the compositions to occur at slightly different times during the cleaning operation. For example, a first paste composition may comprise surfactant, sequestrant and hydrotrope, and a second aqueous composition may comprise a polymer for benefits of surface coverage and spotting. The paste and aqueous compositions can be incorporated in the same cleaning carrier, for example a cleaning cloth. By incorporating the paste into the outer layer of the cleaning cloth and the polymeric composition into the inner layer of the same cleaning cloth, the paste is first used, and the polymer composition can function practically as a finishing step to provide a surface free of marks and stains. during the rinsing step of the cleaning operation.

In a highly preferred embodiment, the present paste compositions further comprise one or more bleach or bleach precursors for antimicrobial (bacteria, virus) and antifungal benefits. In addition, the inclusion of bleach in cleaning wipes of the present invention is very advantageous since it provides a means for simultaneously treating soap residue, lime scale and mold, all in a single product. This unlike the aqueous bath cleaners currently marketed, which can address at least two of the three soils due to problems of chemical incompatibility or safety. Bleaches are not stable in aqueous acid compositions except at a very low pH where safety concerns are a concern. At an alkaline pH, the sequestrants that do not contain phosphorus that are needed to remove the residue of hard water and soap, are incompatible with the bleach. As a result, under all pH conditions, the aqueous compositions have significant exchanges; it has now been discovered that the exchanges of the formulation can be totally eliminated with the paste compositions and articles of the present invention. The bleach or more preferably the bleach precursor may optionally be incorporated directly into the paste compositions. Clearly, the paste form of the product, in particular with low water content, is found to stabilize the bleach and / or precursor until the time of use. Alternatively, the bleach can be incorporated in the cleaning cloth and can be intentionally separated from the surfactant paste. For example, the bleach and the bleach precursor may be included as a solid, gel, paste, tablet, or water-soluble pouch or film, as described above, an aqueous composition or an emulsion in a non-woven layer different from the cloth cleaner than the one comprising the paste containing surfactant, so that it does not contact the surfactant paste before use. If desired, one or more layers of non-woven material can separate the pulp from the bleach. When the bleach is in aqueous form, it is preferred that it be encapsulated or in a bag or the like, or that it be present in the pre-moistened cloth at a level not sufficient to completely saturate the layer of the substrate on which it is impregnated. If the bleaching agent is in solid form, it is encapsulated, preferably between two layers of nonwoven material so that it does not migrate to the layer comprising the paste. This can be achieved by controlling the density of the substrates in which the cleaning agent is enclosed. When present, the bleach and / or bleach precursors comprise at least about 0.1%, more preferably at least about 0.5%, even more preferably at least about 1%, even more preferably at least about 3%. %, and most preferably at least about 5% by weight of the total chemical composition in the cleaning cloth; The bleach and / or bleach precursors comprise at most about 40%, more preferably at most about 30%, most preferably at most about 20% bleaching agents. The exact amount of bleach or bleach precursor included, preferably is a matter of choice of formulation and will depend on the importance given, the benefits sought and the cost. Any variation comprising the lower and upper limits described above can be used. Examples of suitable acidic bleaching agents include inorganic peroxides such as hydrogen peroxide, and sources thereof (eg percarbonate, perborate), persulfate salts (dipersulfate salts and monopersulfate salts such as the triple salt 2KHS05.KHS04 .K2S04 sold by DuPont under the trade name of Oxone®), persulfuric acids and combinations of these. Examples of suitable organic peroxides are benzoyl peroxide and percents, including peracetic acid, perpropionic acid, perhexanic acid, and percarboxylic phthalimide acids including the perhexanic 6-phthalimine acid (PAP) described in European patent no. 0 349 940 incorporated herein by reference. Among the preferred acid bleaches are hydrogen peroxide and monopersulfate. The hydrogen peroxide is easily incorporated into the paste product form and can advantageously be included in the cleaning cloth together with one or more transition catalysts, in particular manganese dioxide, silver and transition metal oxo-anions such as those describe by JA Connor and EVA Ebsworth in Adv. Inorg. Chem. Radiochem. 6 (1994), p. 279-381 and by MH Dickman and MT Pope in Chem. Rev. 94, (1994), p. 569-584. In one embodiment, hydrogen peroxide, in the form of percarbonate or perborate, is incorporated into the pulp and the transition metal catalyst, preferably manganese dioxide or a molybdate and / or tungstate, is incorporated into the cleaning cloth separately so that the two entities (i.e. the pulp comprising hydrogen peroxide and transition metal oxo-anions) do not come into contact with each other. Bleach can also be achieved using monopersulfate (eg Oxone®) with or without ketone. The monopersulfate salt, in combination with a ketone such as acetone, will form a dioxirane: OR HS05"+ RC (0) R 'RR'C + HS04" The dioxirane can oxidize ethylenically unsaturated molecules and in the cleaning operation, can regenerate the ketone. As such, only low levels of ketone are necessary. The ketone, when present, is preferably not in direct contact with the monopersulfate. That is, the ketone or monopersulfate is incorporated into the paste, and the other component is not in direct contact with the paste. For example, the paste may comprise 1-4% acetone and the monopersulfate may be added as a solid to a non-woven layer which is not in contact with the paste. Alternatively, the paste comprising one or more ketones comprises a set of strips in the non-woven material and the monopersulfate lies between the strips or forms another set which does not directly contact the strips before use.

Among the preferred bleaching agents or precursors for use in the neutral or alkaline pH compositions are selected from the group comprising percarbonates, perborates, permeation salts and mixtures thereof. In a preferred embodiment, the bleaching agent is of the type that produces hypobromite ions or hypochlorite ions, with hypochlorite ions being most preferred. Bleaching agents that produce hypochlorite ions in contact with water include the alkali metal and alkaline earth metal hypochlorites, hopochlorite addition products, chloramines, chloramides and chlorimides. Specific examples of preferred compounds for use herein include sodium dichlorocyanurate, potassium dichlorocyanurate, N-chlorosulfamide and 1,3-dimethylhydantoin. Sodium dichlorocyanurate is most preferred. When present, the hypobromite or hypochlorite bleaching agent is preferably separated from the paste-containing composition and the paste-containing composition may optionally comprise sulfamic acid, in particular if the pH of the combined composition of the paste plus agent bleach is below about 10. Sulfamic acid is known to attenuate the formation of bromine liquid or chlorine gas, and reduces the foul odor caused by these bleaches in contact with human skin. Another bleach very beneficial for use at a neutral or alkaline pH is 6-phthalimine perhexanic acid (PAP). Preferably, the PAP is kept separate from the pulp composition, preferably at a pH of from about 1.5 to about 3.5, so that when mixed with the pulp during the cleaning operation, the pH of the combined materials is about 6 to about 9. The present paste compositions may also include fillers. The fillers may include the abrasives described above, as well as salts including sodium sulfate and sodium carbonate, and pyrogenic silica, kaolin, zeolites, siliceous chalk, diatomaceous earth, natural clays including montmorillonite, hectorite, and the like. The purpose of loading is to reduce the cost of pasta compositions. Salts such as sodium sulfate are the most preferred fillers due to their low cost and worldwide availability. In addition, the salts can advantageously be used to absorb water and create pastes with good physical properties. However, the excessive use of fillers will result in compositions that are acceptable but not preferred embodiments of the water activation method described herein. When present, the nonabrasive fillers preferably comprise at most about 40%, more preferably at most 30%, even more preferably at most 20% and most preferably at most about 10% by weight of the composition . Aqueous compositions The aqueous compositions for use with the method described herein are preferably isotropic, or nearly isotropic, compositions.

Examples of preferred aqueous acidic cleaning compositions for cleaning lime scale which also proportionate some cleaning of soap residue and can be used with the method of the present invention include those described in U.S. Pat. num. 5, 686,399, 5,677,271, 5,981, 449, 6,001, 792, 6,127,330 and 6,551, 985, all incorporated herein by reference. Examples of preferred aqueous cleaning compositions for soap residue and which also provide some lime scale benefits and which can be used with the cleaning cloths and the methods of the present invention include those described in the patents of Great Britain. 2,385, 597 and U.S. Pat. num. 5,061, 393, 5,192,460, 5,384,063, 5,612,308, 5,698,041, 5,912,219, 5,981, 455, 6,180,583 and 6,627,590, all incorporated herein by reference. One skilled in the industry will understand that the compositions of the patents that are directed primarily to the cleaning of hard water can be combined with patent compositions primarily directed to the cleaning of soap residue. Examples of neutral pH or alkaline pH aqueous compositions that can be used with the method of the present invention include those described in U.S. Pat. num. 4,020,016, 5,814,591, 5,948,742, 5,972,876, 6,004,916, 6,214,784, 6,399,555, the Great Britain patent no. 2,231, 580, and the international publication WO 98/50510. The compositions described in U.S. Pat. num. 5,814,591, 5,948,742, 5,972,876, 6,004,916, 6,214,784, and 6,399,555 are especially useful for the methods of the invention since these patents describe high performance aqueous cleansing compositions comprising surfactant, organic cleansing solvent, and specific EDTA salts. U.S. Pat. num. 6,245,728 and 6,399,555 further comprise precipitating co-additives such as potassium carbonate to further improve the cleaning of soap residue. Even more preferably, an increase in surfactant levels, greater than about 25% by weight of the chemical composition, an increase in EDTA sequester levels, greater than about 15% by weight of the composition, are highly preferred for the aqueous compositions herein, in particular when used with the water activation method of this invention. The aqueous compositions for use with the method described herein may be in the form of microemulsions. Examples of microemulsion compositions that can be used in conjunction with cleaning wipes and the method described in the invention, include U.S. Pat. num. 5,235,614, 4,46,499 and 4,472,291, which describe microemulsions comprising hypochlorite bleach for cleaning mold, and US Pat. num. 5,108,643, and 5,076,954, which describe microemulsions which in acid form are useful for cleaning limescale and soap residue. Other patents that may provide benefits with the method of the present invention include U.S. Pat. num. 6,017,868, 5,854,193 and 5,861, 367. All of the patents described above are incorporated herein by reference. The aqueous compositions to be used with the method of the invention can be manufactured in the form of a liquid crystal. Suitable liquid crystal acid compositions for cleaning bath surfaces have been described in the industry in U.S. Pat. no. 5,035,826, 5,035,826 and 5,523, 013, all incorporated herein by reference. Detergent gels can also be used predominantly hexagonal phase gel. These gels can be made transparent, translucent or opaque and are described in the work DG Hall and GJT Tiddy "Anionic Surfactants: Physical Chemistry Action" (Anionic Surfactants: Physical-Chemical Action) (Volume of Surfactant Science Series) ed. EH Lucassen-Reynders, Marcel Dekker, New York, 1981, chapter 2, p. 91-94, incorporated herein by reference. Among hexagonal phase gels, those formed by the addition of high levels of additives such as urea, eumeno, xylene sulfonate and toluene to compositions comprising anionic sulphonates and alkyl ethoxy sulfates are especially useful. These gels are described in U.S. Pat. num. 4,615,819 and 5,320,783 incorporated herein by reference. As desired, in these patents hexagonal phase gels can be formed with about 10% to about 40% hydrotropes such as toluene sulfonate, xylene and eumeno, and acidified with about 5% to about 40%, more preferably about 5% to about 30%, most preferably from about 5% to about 25% of inorganic acid, organic acid, and mixtures thereof. Preparation of the composition: The compositions herein are made by mixing the components together. The order in which the components are added is not critical when the compositions are in aqueous form, in particular isotropic liquids. For emulsions, microemulsions and gels, the order in which the components are added will depend on the specific compositions. When the compositions are in paste form, the dough can be formed starting from the aqueous ingredients that are first mixed together and then dried, or from predominantly solid ingredients to which water is added. Preferably, the order in which the components are added is selected to keep the compositions as fluid as possible during the manufacturing process. Preferably, components that are less stable in aqueous media are added almost at the end during the manufacturing process to minimize potential decomposition. In a modality, the paste compositions herein exhibit good flow properties under shear during the manufacturing process. When manufactured, the compositions are preferably not very viscous, with an initial viscosity of about 10 Pa.s. to about 75 Pa.s, more preferably from about 20 Pa.s. to about 50 Pa.s at a shear rate of 1 s. which increases when the compositions are left undisturbed (ie continuous mixing is stopped) for several hours. It has been found that these benefits are achieved in certain cases, for example when the paste is acidic and comprises alkylbenzene sulfonate surfactant. These rheological properties allow easier handling of the pastes before further processing, such as transport, transfer to other containers and the like.

Examples: The following examples are presented to illustrate the article and the paste of the invention. They should not be interpreted as limiting. Pasta no. 1: A 281.04 grams of water, 400 g of maleic acid (99% active, Aldrich), 0.080 g of blue ink (100% active), 200 g of citric acid (100% active, Lyle &Tate) and 200 g N-hexyl ether of ethylene glycol (100% active hexyl Cellosolve®, Dow Chemical) are added in sequence in a 7.6 L (2-gallon) bucket and mixed continuously using a mixer RW 20 DZ.n manufactured by Ikatechnik and marketed by Divtech Equipment Co. (PO Box 58468, Cincinnati, OH 45258). Once the solid acids are mixed well and substantially dissolved, 800 grams of eumune sulfonate powder (93% active, Ruetgers-Nease Corporation) is added. By continuing to mix at 157 rad / s (1,500 rpm), the composition becomes homogeneous, and 70 g of perfume (100% active, Avanel), 78.16 g polymer of water lamination (20.5% active, polymer poiizw.tteriónico) are added. 'Mirapol HSC-300', Rhodia) and 948.45 g lauramidopropyl betaine (Mackam 1200, McIntyre) are added in sequence to the mixture. By continuing to mix at 157 rad / s (1,500 rpm), the composition again becomes homogeneous, and 742.27 grams of sodium dodecyl sulfate (97% active, Stepan) are added. The addition of sodium dodecylsulfate causes the composition to thicken considerably. The final dough weighs 4 kilograms. Pasta no. 2. An acid paste is prepared, except that the sodium dodecyl sulphate active in paste no. 1 is replaced with an equivalent amount of linear alkylbenzene sulfonate active (Nacconol 90G, 95% active, Stepan). The addition of the sulfonate surfactant does not result in a thickening of the shear paste, and the final composition (4 kg) flows easily. A lid is placed on the pasta container and the pasta is stored overnight. When you inspect the pasta the next day, it seems visibly much thicker. All Theological measurements are made on a Rheolyst Series AR 2000 style A rheometer, manufactured by T.A. Instruments, Ltd., Europe House, Bilton Center, Cleeve Road, Leatherhead, Surrey KT22 7UQ, United Kingdom. Pasta no. 1 has a viscosity of 350 Pa.s at a shear rate of 1 s- \ G 'of 10500 Pa and G "of 3500 Pa in the linear viscoelastic region at a constant frequency of 10 s-1. it has a viscosity of 450 Pa.s at a shear rate of 1s "\ a G 'of 1, 000 Pa and G" of 4000 Pa in the linear viscoelastic region at a constant frequency of 10 s-1. In one embodiment, any of the disposable cleaning wipes described above having the cleaning compositions described above can be sold in a container as a cleaning kit, since it is relatively counterintuitive for a consumer to add water to a cleaning cloth before cleaning a surface, it may be beneficial to provide instructions for use to the user In one embodiment, the instructions for use may be transmitted to the user by any method known in the industry, such as words, diagrams, graphics or printed drawings on the package or directly on the cloth. Preferred instructions for use include the steps of removing the cleaning cloth from the container, applying water to the cleaning cloth and then contacting the surface to be cleaned with a cleaning cloth activated with water. When desired, the Instructions for use may also include the step of attaching the cleaning cloth to a cleaning implement before or after the step of applying water to the cleaning cloth and then using the cleaning implement to clean the surface of the bathroom.

Claims (25)

NOVELTY OF THE INVENTION CLAIMS

1. A method for cleaning bathroom surfaces, in particular bathtubs and showers with a single-use disposable cleaning cloth; the method comprises the steps of: providing a disposable wipe containing a cleaning composition in paste or aqueous form; contact the cloth with water to activate the cloth; contact the activated cloth with the surface of the bathroom to be cleaned; optionally, but preferably, rinse the surface with water.

2. The method according to claim 1, further characterized in that the method is for cleaning soap residues, hard water spots and mixtures thereof.

The method according to claims 1 to 2, further characterized in that the cloth comprises at least one nonwoven substrate having a basis weight of about 20 g / m2 to about 200 g / m2, and a density of at least 0.15 g / cm3.

4. The method according to claim 3, further characterized in that the substrate of nonwoven material has at least one cleaning side, wherein the cleaning composition is applied to the cleaning side, preferably in a different pattern.

5. The method according to claims 1-4, further characterized in that the cleaning composition is selected from at least one of: a cleaning composition comprising at least about 5% by weight of the composition of a surfactant and at least about 3% by weight of one or more organic or inorganic acids, wherein the composition has a pH of from about 0.5 to about 6; or a cleaning composition comprising at least about 5% by weight of the composition of a surfactant and at least about 3% of one or more sequestrants and wherein the composition has a pH of from about 6 to about 12.

6. The method according to claim 5, further characterized in that the cleaning composition further comprises at least about 3% by weight of one or more hydrotropes and / or at least about 1% of one or more organic cleaning solvents.

7. A water activated article for cleaning bathroom surfaces, in the form of a disposable cleaning cloth comprising: at least one nonwoven substrate having a basis weight of about 20 g / m2 to about 200 g / m2 and wherein the nonwoven substrate includes a cleaning composition selected from at least one of: a composition comprising at least about 5% by weight of the cleaning composition of a surfactant, at least about 3% by weight of one or more organic or inorganic acids by weight of the compositions, so that the cleaning composition has a pH of from about 0.5 to about 6; a composition comprising at least about 5% by weight of the cleaning composition of a surfactant, at least about 3% by weight of one or more sequestrants by weight of the compositions and at least about 3% by weight of one or more more hydrotropes, and wherein the cleaning composition has a pH of from about 6 to about 12.

The article according to claim 7, further characterized in that the cloth is a laminate of at least 2 substrates of non-woven materials, and wherein the laminate includes at least one cleaning side wherein the cleaning composition is applied to the at least one cleaning side, preferably in a pattern such as different fringes.

The article according to claims 7 to 8, further characterized in that the cleaning composition is a paste, and wherein the article further comprises a bleaching agent and / or precursor, wherein the bleaching agent and / or precursor is not direct contact with pasta.

The article according to claims 7 to 9, further characterized in that it additionally comprises a cleaning implement to which the cloth is removably secured during the cleaning operation; the implement comprises a handle head to which the cloth is connected.

11. The article according to claim 10, further characterized in that the cloth is fastened to the cleaning implement by means of a fixing structure selected from at least one adhesive, structure cut along, hook and loop fasteners, bag, pin, clip, clamp, and any combination of these.

12. An article to clean bathroom surfaces; the article comprises: a cleaning implement comprising a handle; a disposable cleaning cloth removably attached to the cleaning implement, wherein the cleaning cloth comprises at least one layer of a nonwoven substrate, the nonwoven substrate having a basis weight of about 20 g / m2 to about 200 g / m2, and wherein the nonwoven substrate includes a cleaning composition selected from at least one of: a cleaning composition comprising at least about 5% by weight of the cleaning composition of a surfactant, at least about 3% by weight of one or more organic or inorganic acids by weight of the compositions, so that the cleaning composition has a pH of from about 0.5 to about 6; a cleaning composition comprising at least about 5% by weight of the cleaning composition of a surfactant, and at least about 3% by weight of one or more sequestrants by weight of the compositions, and wherein the cleaning composition has a pH from about 6 to about 12.

13. The article according to claim 12, further characterized in that the cleaning composition is a paste.

The article according to claim 13, further characterized in that the cleaning cloth comprises at least one cleaning side, and wherein the dough is applied to the at least one cleaning side at a level of about 0.005 g / cm2 to about 0.60 g / cm2, more preferably from about 0.015 g / cm2 to about 0.30 g / cm2, and most preferably from about 0.025 g / cm2 to about 0.20 g / cm2.

15. A cleaning composition for cleaning surfaces of the bath, in particular suitable for removing soap residue and hard water, in the form of paste; the cleaning composition comprises: at least about 5% surfactants, at least about 3% of one or more organic or inorganic acids and mixtures thereof, and at least about 3% of one or more hydrotropes, wherein the pH of a 10% solution of the paste is from about 0.5 to about 6 16.

A cleaning composition for cleaning surfaces of the bath, in particular suitable for removing soap residue and hard water, in paste form; The cleaning composition comprises: at least about 5% of surfactants, at least about 3% of one or more sequestrants, and at least about 3% of one or more hydrotropes, wherein the pH of a 10% solution of the paste is from about 6 to about 12.

The composition according to claims 15 and 16, further characterized in that the hydrotropes are selected from the group comprising toluene sulfonate salts, xylene and eumeno, diphenyl ether disulfonate salts C6-C12, C4-C6 alcohol ethoxylates, C4-C6 glycosides, 2-ethyl-1-hexyl sulfate salts, mono- and di-2-ethyl-1-hexyl sulfosuccinate salts, and C8-C22 alkyl ethoxylates who have an HLB greater than about 12; and mixtures of these.

The composition according to claims 15 and 16, further characterized in that the surfactants are present at levels of from about 7.5% to 80% by weight of the composition, more preferably from about 10% to about 70% by weight, with the highest preference of about 15% to about 50% by weight, and wherein the surfactant comprises an anionic sulfonate surfactant.

The paste composition according to claim 15, further characterized in that the acid is present at levels of about 10% by weight of the composition at about 40% by weight, and wherein the acid is preferably selected from the group that it comprises adipic acid, citric acid, glutaric acid, glycolic acid, maleic acid, phosphoric acid, succinic acid, sulfamic acid, and mixtures thereof.

20. The paste composition according to claim 16, further characterized in that the sequestrant is present at levels of from about 10% to about 50%, and wherein the sequestrant is preferably selected from the group comprising the sodium, potassium, ammonium salts and alkanolammonium or the partial salts of nitrilotriacetic acid, methylglycine diacetic acid, ethylenediaminetetraacetic acid, and mixtures thereof.

The composition according to claims 15-20, further characterized in that it additionally comprises at least about 1% by weight, more preferably at least about 5% by weight of one or more organic cleaning solvents, preferably solvents of glycol esters selected from the group comprising dipropylene glycol n-butyl ether, dipropylene glycol n-propyl ether, tripropylene glycol n-butyl ether, tripropylene glycol n-propyl ether, ethylene glycol n-hexyl ether, ethylene glycol n-hexyl ether, and mixtures of these.

22. The composition according to claims 15-21, further characterized in that it additionally comprises at least one additional surfactant selected from the group comprising zwitterionic surfactant, amphoteric surfactant, and mixtures thereof, and wherein the additional surfactant is preferably a betaine or sulfobetaine.

23. The composition according to claims 15-22, further characterized in that it additionally comprises from about 3% by weight of the composition to about 20% by weight of one or more bleaching agents and / or precursors, wherein the bleaches formed in contact with water are preferably selected from the group comprising hydrogen peroxide, sodium and potassium salts of monopersulfate, sodium and potassium salts of 6-phthalimine perhexanic acid (PAP), sodium and potassium hypochlorite, sodium and potassium hypobromite, and mixtures of these.

24. The composition according to claims 15-23, further characterized in that the pulp has a viscosity of about 100 Pa.s to about 1000 Pa.s at a shear rate of 1 s-1.

25. The composition according to claims 15-24, further characterized in that the paste, when measured by the linear viscoelastic region at a frequency of 10 s-1, has a storage modulus G '(solid type stiffness) of about 7500 Pa to approximately 30,000 Pa, and a loss modulus G "(liquid type rigidity) from approximately 2000 Pa to approximately 7000 Pa.