Acid based powder lavatory cleaning compositions

Abstract

A hard surface cleaning composition comprising: about 5-15% by weight of sulfamic acid or its salts, 0.5-5% anionic surfactant, at least one alkali or alkali earth metal salt totalling 35-65%, and 9-55% abrasive filler. The anionic surfactant is preferably a sodium salt of C14-16 alkane sulfonate, C8-22 alkyl sulfonate, or alpha sulfonated carboxylic acid. The metal salts may be chlorides or sulphates, preferably sodium chloride and / or sodium sulphate. The abrasive filler may be a combination of kaolin and a basic filler, preferably in a ratio of between 1-1.5 to 1-4, and the basic filler is preferably dolomite. The composition may also comprise sodium sulphate containing coloured speckles. Also, a composition comprising: 7.5-10.5% sulfamic acid, 1-3% olefin sulphonate, 43-58% sodium chloride / sulphate salt, and 10-35% abrasive filler comprising kaolin and dolomite. Also, a method of cleaning bathroom hard surfaces like toilet bowls and floors, comprising applying the composition, then optionally applying water.

Description

Field of Invention The present invention relates generally to powdered acid based multipurpose lavatory cleaning compositions, the kit, and the methods of using the same. Background There are a variety of cleaning compositions that have been described in the art for cleaning hard surfaces located in bathrooms such as toilet bowls, bathroom tiles and floors. Such compositions are typically combinations of an acidic component, a dye and fragrance that are flushed with water to produce their desired aesthetic, cleaning, disinfecting, and deodorizing effects. Existing bathroom cleaner products however are mainly bleach-based liquid containing detergents and / or foaming agents. However, such formulations typically fail to remove tough stains. The more cost effective formulations may contain an acid as an active ingredient; however, they are highly unstable formulations when high pH or alkaline auxiliary agents are used in the formulation, particularly when in powder form. The acid and the base in a powder formula typically react in presence of moisture, causing formulation degradation and / or package bloating. To that end, there is a need in the art to create sustainable powder cost effective formulation that can provide superior hygiene. The various features of the invention address such need. Summary of the invention; The present invention solves the problem by providing an acid based powdered hard surface cleaning compositions with mechanical abrasion action that offers superior limescale and / or rust removal capabilities. In the first aspect, the present invention is directed to hard surface cleaning compositions containing (a) from between about 5% to about 15% by weight of sulfamic acid or salts thereof, preferably between 7.0% to 10.5%; (b) from about 0.5 % to about 5.0% by weight of an anionic surfactant, preferably between 1.0% to about 3.0%; (c) at least one alkali metal salt and / or at least one alkali earth metal salt in amounts of about 35% to about 65%, preferably in amounts of about 40% to 60% ; and (d) an abrasive filler component in an amount ranging from about 9% to about 55% by weight, preferably between 10% to about 45%. In some embodiments, the abrasive filler component may be a combination of kaolin and a basic filler. In preferred embodiments, the abrasive filler component is a combination of kaolin and the basic filler is dolomite. In the some embodiments of the first aspect, the present invention is directed to hard surface cleaning compositions containing (a) from between about 8% to about 10% by weight of sulfamic acid; (b) from about 1 % to about 3% by weight of an anionic surfactant, (c) at least one alkali metal salt and / or at least one alkali earth metal salt in amounts of about 43% to about 58%; and (d) an abrasive filler component in an amount ranging from about 15% to about 35%, wherein the abrasive filler component is a combination of kaolin and dolomite at weight ratios ranges of 1-1.5 (kaolin) to 1-4 (dolomite) respectively, preferably at weight ratios ranges of 1 (kaolin) : 1 (dolomite) to 1 (kaolin) : 2.5 (dolomite). In some embodiments, the hard surface cleaning compositions of the present invention are in a solid format including but not limited to a plurality of particles, powder bulk, a plurality of encapsulated powders, compacted powder or particles, a plurality of semi-solid granules, a tablet, a coated tablet, a minitab, or the like. In the preferred embodiments, the bulk density of the powder is about 0.8 to 1.5 g / ml and at least 90% of the particles have a diameter less than 1500 microns, preferably less than 500 microns. In more preferred embodiments, the bulk density of the final powder formulation is in the range of 1.0 to 1.13 g / ml In the preferred embodiments according to the first aspect of the present invention, the sulfamic acid may be present in the final powdered format in amounts ranging from 7.0% to 10.5% by weight, most preferably in the amount of about 7.5% to about 10% by weight of the final composition. In other embodiments, the anionic surfactant is an olefin sulfonate, preferably a sodium Cu-i6 olefin sulfonate in amounts ranging from 0.7% to 3% by weight, preferably in the amount of about 1% by weight of the final composition. In some embodiments, the composition according to the present invention is free of any other surfactants or biocide agents and has a bulk density ranging of 1.0g / ml to 1.13g / ml. In some embodiments, the weight percent ratio between the abrasive filler component to the alkali metal salt in the composition according to the present invention is ranging between 1.0 of the abrasive filler components to 1.0 to 2 of the alkali metal salt; most preferably in the range of 1:1.8- 2 to facilitate desired properties of the present formulation, such as a bulk density ranging between 1 to 1.5 and / or suitable flowability. In some embodiments, the dolomite has an average particle size of less than 1000 microns. In preferred embodiments, at least 50% of the dolomite particles have an average size ranging between 200 to 500 microns. In other embodiments, the average particle size distribution for the formulations according to the present invention ranges between 250 to 1000 pm (microns), preferably at least 80%, 85%, or 88% of the particles in the formulation have a particle size less than 500 microns. In some embodiments, the speckles appear in different colors such as blue, orange or green. The alkali metal salts, and alkali earth metal salts may include chloride, carbonate, acetate, citrate or sulfate salts, preferably chloride, carbonate or sulfate salts. In some embodiments, the alkali metal salt is sodium chloride, and the alkali earth metal salt is calcium or magnesium chloride salts or combinations thereof. In other embodiments, the alkali metal salt is sodium chloride, sodium sulfate or a combination thereof. In other embodiments, the abrasive filler component is a calcium magnesium carbonate mineral including but not limited to crystalized mineral dolomite, calcium carbonate, silica, mica, huntitie, magesite and hydromagesite, aluminum silicate, kaolin, or clay material such as dioctahedral phyllosilicate clay (kaolin, A12 Si2O5(OH)4) or combinations thereof. In some embodiments, the abrasive filler component may include kaolin or other similar clay type fillers having an acidic pH; a basic fillers such as dolomite, calcium carbonate, silica, mica; or any combinations thereof. In preferred embodiments, the abrasive filler component is a combination of kaolin and dolomite, preferably at a weight ratio ranging between 1-1.5 to 1-2.5 respectively on the w / w% basis. In some embodiments, the composition optionally comprises any one of a dye, a binder, fragrance, an anti-caking agent, pH modifiers, acid regulator or any mixtures thereof. In some embodiments, a composition according to the present invention has less than 3% water content. In other composition, a composition according to the present invention is substantially free of water. In another aspect, the present invention is directed to methods for cleaning hard surfaces such as toilet bowls, urinal, lavatory fixtures, bathroom and flooring tiles and concrete floors by applying the cleaning composition of any of the prior claims to the area of interest and optionally applying water to remove undesirable scaling and odor in the same area. In some embodiments, the hard surfaces is of material selected from the group consisting of bricks, ceramic, crystal, diamond, glass, latex, pebbles, porcelain, polymeric, wood tiles, quarry tiles, and natural stone. Detailed Description of the Invention Unless defined otherwise, all technical and scientific terms used herein have the same meaning as is commonly understood by one of skill in the art to which this invention belongs and shall be understood to have the meanings described below. All publications and patents referred to herein are incorporated by reference in their entirety. Unless otherwise specified, a reference to a particular compound includes all ionic, salt, solvate (e.g., hydrate), protected forms, and other stereoisomers thereof, isomeric forms, including racemic and other mixtures thereof. As used herein, "about" will mean up to plus or minus 5% of the particular term. As used herein, an “abrasive filler” include ingredients that are not water soluble and when combined with water provides a degree of abrasion on a hard surface such as porcelain, granite, marble, ceramic tiles and the like. The abrasive filler component may be a combination of an acidic filler and a basic filler. Abrasive acidic fillers are typically clays or mineral ingredients having a pH of less than 6, preferably less than 5.5. In contrast, abrasive basic fillers are those minerals that have a pH higher than 6, preferably 6.5, more preferably 7. As used herein, the term “biocide” refers to any material that is capable of killing any of the microorganisms: bacteria, fungus, archaea, protozoa, algae, parasites, virus, pathogenic or non-pathogenic, which may include additional compounds having antiviral, antimicrobial, antibacterial, antifungal, and / or antiparasitic activities. As used herein, "consisting essentially of' refers to excluding other active ingredients but including the recited optional excipients. As used herein, “consist of’ or “consisting of’ refers to compositions that only includes the recited ingredients. By the term "substantially free" it is meant that the final composition is free of any traces of the identified ingredient to the extent that it could be detected by general quantitative assays known in the art for detection of such ingredient in the final composition or if detected, but less than 2.5% of the total weight of the respective composition only in the form of residual content of the ingredient or the composition containing such ingredient. For example, the phrase substantially free of water would mean that the respective composition contains less than 2.5% water. On the other hand, the phrase “free of’ reflects that the claim is free of any traces of the ingredient at issue. All ranges described herein are meant to be inclusive of all amounts therebetween. For example, a range of surfactant from 9% to 15% by weight is intended to cover all amounts or concentrations therebetween including 10%, 11%, 12%, 13%, 14% and 15% by weight. Certain chemical names may be spelled differently yet, used interchangeable as understood by one of ordinary skill in the art. For example, terms such as “sulphate” and “sulfate” are directed to the same molecular moiety. The present inventors have discovered a unique acid based cleaning composition containing sulfamic acid that provides superior limescale and rust removal capabilities while stays stable in the powder format for at least 4, 12 or 26 weeks at the 30°C / 75 RH (Relative Humidity) and 40°C / 75 RH. In some embodiments, once the powder formulation is diluted in suitable amount of water, it leads to a pH of less than 4.5, preferably less than 3.5, more preferably less than 2.5. In the first aspect, the present invention is directed to hard surface cleaning compositions containing (a) from between about 5% to about 15% by weight of sulfamic acid or salts thereof, preferably between 7.0% to 10.5%; (b) from about 0.5 % to about 5.0% by weight of an anionic surfactant, preferably between 1.0% to about 3.0%; (c) at least one alkali metal salt and / or at least one alkali earth metal salt in amounts of about 35% to about 65%, preferably in amounts of about 40% to 60% ; and (d) an abrasive filler component in an amount ranging from about 9% to about 55% by weight, preferably between 10% to about 45%. In some embodiments, the abrasive filler may be a combination of kaolin and a basic filler. In preferred embodiments, the abrasive filler component is a combination of kaolin and dolomite. In the some embodiments of the first aspect, the present invention is directed to hard surface cleaning compositions containing (a) from between about 8% to about 10% by weight of sulfamic acid; (b) from about 0.75 % to about 1.5% by weight of an anionic surfactant, (c) at least one alkali metal salt and / or at least one alkali earth metal salt in amounts of about 43% to about 58%; and (d) an abrasive filler component in an amount ranging from about 15% to about 35%, wherein the abrasive filler component is a calcium magnesium carbonate mineral such as crystalized mineral dolomite, calcium carbonate, talc, silica, mica, huntitie, magesite and hydromagesite; an aluminum silicate, a kaolin, or clay material such as dioctahedral phyllosilicate clay (kaolin, aluminum silicate hydroxide, Ab Si2 O?(OH)4) or any combinations thereof. In some embodiments, the abrasive filler component is a combination of kaolin and dolomite at weight ratios ranges of 1-1.5 (kaolin) to 1-4 (dolomite) respectively, preferably at weight ratios ranges of l(kaolin) :1 (dolomite) to 1 (kaolin) :2.5 (dolomite). Sulfamic acid is an acidic cleaning agent typically used to remove the rust and lime scale. The compositions according to the present invention are in powder format and contain sulfamic acid in amounts ranging between about 5% to about 15%, preferably 7% to about 12.5% by weight, more preferably between 8.0 % to 10.5%. In one embodiment, the powdered composition of the present invention contains 8%, 9% or 10% sulfamic acid. Suitable Salts of sulfamic acid include but are not limited to alkali or alkali earth metal salts. Suitable surfactants according to the present invention include at least one anionic surfactant in powder format. Anionic surfactants are surface active substances that are classified by the negative charge of the hydrophobic substance, or surfactants in which the hydrophobic portion of the molecule has no charge unless the pH rises above neutral. Examples of such polar moieties include sulfonates, carboxylates, sulfates, and phosphates groups found in anionic surfactants which are typically in the form of sodium, calcium, magnesium, and potassium ammonium salts. In some embodiments, the composition comprises two anionic surfactants. In other embodiments, the composition comprises more than two anionic surfactants. More preferable anionic sulfonate surfactants for use in this composition include alkyl sulfonates, linear and branched primary and secondary alkyl sulfonates, and aromatic sulfonic acids with or without substituents. In other embodiments, suitable sulfonate surfactants include Cs to C22 olefin sulfonates, preferably C14 to Cie olefin sulfonates. Preferred sulfonate surfactants include the sodium salts of sulfonicacids, Cl4-16-Alkane hydroxy and C14-16-alkene. In some embodiments, the sulfonate surfactants are alpha C14 to Cie olefin sulfonates. Additional anionic surfactants suitable for the composition include anionic carboxylate surfactants having a carboxylic acid or alpha hydroxyl acid group. Suitable anionic carboxylate surfactants for use in the present compositions include carboxylic acids (and salts) such as alkanoates (and alkanoates), ester carboxylic acids (including sulfonated carboxylic acid esters), ether carboxylic acids. In preferred embodiments, the anionic surfactants are present in in about 0.5 % to about 2.5% by weight of an anionic surfactant, preferably between 0.75% to about 1.75%, most preferably in the amount of 1% by weight of the final composition. In some embodiments, the composition according to the present invention is free of any other surfactants or biocide agents. In some preferred embodiments, the hard surface cleaning composition comprising according to the present invention comprise (a) sulfamic acid in amounts of 7.5% to 10.5% weight of the composition; (b) olefin sulphonate in amounts of 1% to 3% weight of the composition, preferably 1%, (c) sodium chloride or sulphate salt in amounts of 43% to 58% weight of the composition, and (d) an abrasive filler component consisting of kaolin, dolomite or a combination thereof having a total amounts ranging between 10% to 35% by weight of the composition, In some embodiments, the hard surface cleaning compositions of the present invention are in solid format including but not limited to a plurality of particles, powder bulk, a plurality of encapsulated powders, compacted powder or particles, a plurality of semi-solid granules, a tablet, a coated tablet, a minitab, or the like. In the preferred embodiments, the bulk density of the powder is about 1 to 1.5, preferably l.Og / ml to 1.13g / ml and at least 85% of the particles have a diameter ranging between about 5 to 1500 microns. In a preferred embodiments according to the first aspect of the present invention, the sulfamic acid may be present in the final powdered format in amounts ranging from 8% to 10.0% by weight and the anionic surfactant is a sodium C14-16 olefin sulfonate in amounts ranging from 0.9% to 1.25% by weight, most preferably in the amount of 1% by weight of the final composition. In some embodiments, the composition according to the present invention is free of any other anionic surfactants or biocide agents. In some embodiments, the composition according to the present invention is free of any other anionic, non-ionic, amphoteric, cationic surfactants, and any biocide agents. In some embodiments, the composition according to the present invention is free of any source of non-ionic, amphoteric or cationic surfactants. The alkali metal salts and alkali earth metal salts may include chloride, carbonate, acetate, citrate or sulfate salts, preferably chloride or sulfate salts. In some embodiments, the alkali metal salt is sodium chloride, and the alkali earth metal salt is calcium or magnesium chloride salts or combinations thereof. In other embodiments, the abrasive filler component is a calcium magnesium carbonate mineral such as crystalized mineral dolomite, huntitie, magesite and hydromagesite. Other basic fillers suitable for the present formulation includes calcium carbonate, silica, mica or the like. In other embodiments, the abrasive filler component will be a combination of dolomite and kaolin. In preferred embodiments, the ratio of kaolin to dolomite is in the range of 1 to 2.25 respectively on w / w basis. In some embodiments, the weight percent ratio between the total abrasive filler component and the alkali metal salt of the composition is ranging between 1.0 to 0.75 of an alkali metal salt to 1.0 to 0.75 of the abrasive filler components; most preferably in the range of 1:1 to facilitate desired properties of the solid format. In other embodiments, the weight percent ratio between the abrasive filler component to the alkali metal salt is ranging between 1.0 -1.5 of the abrasive filler component to 1- 2.5 of the alkali metal salt; most preferably in the range of 1:2 to facilitate desired properties of the solid format, such as a bulk density ranging between 0.8 to 1.5, a particle size distribution preferably with a diameter of at least 80% of the particles ranging between 200 to 1000 pm (microns). The alkali metal salts and alkali earth metal salts may include chloride, carbonate, acetate, citrate or sulfate salts, preferably chloride or carbonate salts. In some embodiments, the alkali metal salt is sodium chloride, and the alkali earth metal salt is calcium or magnesium carbonate salts or combinations thereof. In one preferred embodiment, the alkali metal salt is sodium chloride or sodium sulphate. In some embodiments, the composition is substantially free of any sodium or calcium carbonate. In other embodiments, the composition is free of any sodium and / or calcium carbonate. In some embodiments, the composition optionally comprises any one of a dye, a binder, fragrance, an anti-caking agent, pH modifiers, acid regulator, anti-oxidants, absorbants, humectants, or any mixtures thereof. In some embodiments, a composition according to the present invention has less than 2.5% water content. In other composition, a composition according to the present invention has less than 2% water content. In some embodiments, the formulation contains pH neutral colored speckles such as sodium sulphate speckles in different colors than the base. In some embodiments, the particle size of the abrasive filler components and / or the alkali salt are controlled to reduce the residuals on the hard surfaces. In some embodiments, the dolomite is sieved through mesh No. 22, 30, 60 or 72 to obtain granulate size distribution ranging between 200 to 1000 microns. In some embodiments, the sieve is a mesh No. 30 to provide a dolomite size distribution of less than 500 microns for at least about 45%, preferably 50% of the dolomite content in the cleaning compositions according to the present invention. In other embodiments, the content of the alkali metal such as sodium chloride may also be sieved through different size mesh No, preferably mesh No. 30 or 60 to provide suitable particle size, preferably ranging between 250 to 500 microns for at least 50% of the sodium chloride content in the cleaning composition. Particle size distribution of dolomite and sodium chloride has a dramatic effect on the powder flow. In some embodiments, at least 50% of the content of dolomite granules and sodium chloride particles in the cleaning compositions according to the present invention have a particle size ranging between 250 to 500 microns. In some embodiments, the cleaning compositions according to the present invention have an average particle size distribution ranging between 200 to 1000 microns. In other embodiments, at least 80%, 85%, or preferably 88% of the particle size of the cleaning composition according to the present invention, ranges between 200 to 1000 microns. In most preferred embodiments, the cleaning composition having an average particle size distribution of less than 500 microns for at least 85% of the entire formulation. In other embodiments, when the cleaning compositions according to the present invention undergo an Angle of Repose flowability test at 25°C at a 25 to 35 Angle of Repose through a funnel having a diameter of 0.5mm, they exhibit excellent flowability properties to the extent that the composition flows freely through the funnel. In other embodiments according to the formulations, particularly disclosed in Tables 1-4 exhibit superior flowability as compared to non-sieved powder formulations having the same ingredients. In another aspect, the present invention is directed to methods for cleaning hard surfaces such as toilet bowls, urinal, lavatory fixtures, bathroom and flooring tiles and concrete floors by applying the cleaning composition of any of the prior claims to the area of interest and optionally applying water to remove undesirable scaling and odor in the same area. In some embodiments, the hard surfaces is of material selected from the group consisting of bricks, ceramic, cement, crystal, diamond, glass, latex, pebbles, porcelain, polymeric, quarry tiles, and natural stone. In some embodiments, the solid composition is in the form of loose powder, compressed powder particles, encapsulated granules, plurality of particles, powder bulk, a plurality of encapsulated powders, compacted powder or particles, a plurality of semi-solid granules, compressed tablet, or a coated tablet, a minitab that can stay stable (less than 5% degradation of the active ingredients) for at least 4, 12 or 26 weeks at the 30°C / 75 RH (Relative Humidity) and 40°C / 75 RH. In some embodiments, once the powder formulation is diluted in suitable amount of water, it leads to a pH of less than 4.5, preferably less than 3.5, more preferably less than 2.5. In some embodiments, the composition is wrapped or encapsulated in a water soluble or insoluble film. In other embodiments, the composition is in the form of compressed tablet or compressed powder packaged in a water-soluble and moisture control film or material. In some embodiments the solid composition has a weight ranging from about 0.05 g to about 500 g. In some embodiments, the solid composition is in the form of a loose powder particles, compacted powder form or compressed tablet having a weight ranging from about 5 g to 100 g, preferably 10 g to 75 g. In some embodiments, the cleaning compositions of the present invention is free of any secondary surfactants, any other anionic, non-ionic, or cationic surfactants and / or any biocide materials. In some other embodiments, the composition is in the form of a loose powder having at least one alkali metal salt and / or at least one alkali earth metal salt in amounts of about 43% to 58%; and an abrasive filler component in an amount ranging from about 10% to about 35% by weight, wherein the abrasive fillers are mineral salts. In some embodiments, the composition has a pH between 1 and 7, and in other embodiments, the pH may be between 1.5 and 5.5, measured at 20°C. In one preferred embodiment, the powder formulation has a pH ranging between 3-6, and in a more preferred embodiment, the pH of the powder composition is between 2.5 to 4.5 at 25°C. In some embodiment, the alkali metal salt is sodium chloride, sodium sulphate or a combination thereof. In some embodiments, the composition is substantially free of any sodium or calcium carbonate. In other embodiments, the composition is free of any sodium and / or calcium carbonate. In some embodiments, the cleaning composition of the present invention contains less than 2.5% water content. In some embodiments, the cleaning composition of the present inventio is substantially free of water, the anionic surfactant is selected from the group consisting of carboxylates, sulfonates, sulfates, and phosphates salts or combinations thereof, preferably a sodium C14-16 alkane sulfonate, a C8-C22 alkyl sulfonate, and an alpha sulfonated carboxylic acid sodium salts or ester thereof. In some embodiments, the present composition may include one or more additional optional ingredients selected from the group consisting of dye, a fragrance, a chelating agent, anti-caking agents, preservatives, bitterness flavorant, radical scavengers, hydrotropes, anticorrosion agents, opacifiers, brighteners, abrasives such as silica, kaolin, talc or an absorbent. In certain embodiments, Anti-caking agents are generally used to reduce or prevent the caking of the powders or granules and include calcium salts of citric acid, such as tricalcium citrate, native starch, calcium phosphates, silicon dioxide, calcium silicate or the like. Suitable dyes or colored speckles that may be used in this invention include but are not limited to sodium sulphate or chloride speckles. Suitable speckles are those colored speckles having a pH lower than 10.5, preferably lower than 10, more preferably ranging between 6.5 to 10, that would not preferably interact with the acidic component of the formulation. Suitable fragrances that may be used in this invention includes natural or synthetic fragrances inducing essential oils derived from herbs, flowers, trees, and other plants. Such oils include for example, rose oil or peppermint oil, sesame oil, macadamia nut oil, tea tree oil, evening primrose oil, Spanish sage oil, Spanish rosemary oil, coriander oil, thyme oil, pimento berries oil, rose oil, anise oil, balsam oil, bergamot oil, rosewood oil, cedar oil, chamomile oil, sage oil, clary sage oil, clove oil, cypress oil, eucalyptus oil, fennel oil, sea fennel oil, frankincense oil, geranium oil, ginger oil, grapefruit oil, jasmine oil, juniper oil, lavender oil, lemon oil, lemongrass oil, lime oil, mandarin oil, marjoram oil, myrrh oil, neroli oil, orange oil, patchouli oil, pepper oil, black pepper oil, petitgrain oil, pine oil, rose otto oil, rosemary oil, sandalwood oil, spearmint oil, spikenard oil, vetiver oil, wintergreen oil, or the like known to those of skill in the art. In other aspects, the present invention provides for methods of manufacturing an acid based powdered composition comprising the steps of mixing sulfamic acid with all powder ingredients in a humidity control environment. In at least one embodiment, sodium sulphate may be used in place of sodium chloride or in combination with sodium chloride to lower hygroscopic susceptibility of the composition and further minimize the impact of humidity on the composition. In another aspect, the present invention provides for methods of cleaning hard surfaces in bathrooms such as toilet bowls, urinal, lavatory fixtures, bathroom and flooring tiles and floors by applying the cleaning composition to the area of interest and optionally applying water to remove undesirable scaling and odor in the same area. In some embodiments, the powder composition according to the present invention may be diluted with 2X, 3X or 4X volume of water before it is applied to the hard surfaces of interest. Hard surfaces according to this invention include such material as bricks, ceramic, crystal, diamond, glass, latex, pebbles, porcelain, polymeric quarry tiles, natural stones and concrete. Examples The foregoing Tables 1-3 provide a description of preferred embodiments of the first aspect of the present invention in solid loose powder or compacted powder compositions. In preferred embodiments, the composition according to the present invention has a ratio between 1.0 to 0.75 of an alkali metal salt to 1.0 to 0.75 of the abrasive filler components; most preferably 5 in the range of 1:1. Table 4 provides an alternative embodiment, wherein the abrasive filler is a combination of dolomite grains and kaolin and / or the dolomite grains and sodium chloride all of which are sieved by a sieve mesh Nos. 30 and 60 providing a superior flowability. Table 1 C hemical Mame Q(y(%) Product Sodium Chloride 43 Ca and Mg carbonate Combination Mineral (Dolomite) 40.75 Sulfamic Acid 10 Sodium Sulphate speckles 5 Sulfonicacids, Cl4-16-Alkane hydroxy and C14-16-alkene, sodium salts 1 Fragrance 0.25 10 15 Table 2 Chemical Name Qty (%) Product Sodium sulphate anhydrous * 43 Ca and Mg carbonate Combination Mineral (Dolomite) 40.75 Sulfamic Acid 10 Sodium Sulphate speckles 5 Sulfonicacids, C14-16-Alkane hydroxy and C14-16-alkene, sodium salts 1 Fragrance 0.25 * Preferred for reducing hygroscopic susceptibility to humidity. Table 3 Chemical Name Qty (%) Product Sodium sulphate anhydrous 43 Ca and Mg carbonate Combination Mineral (Dolomite) 42.75 Sulfamic Acid 8 Sodium Sulphate speckles 5 Sulfonicacids, C14-16-Alkane hydroxy and C14-16-alkene, sodium salts 1 Fragrance 0.25 Table 4 Chemical Name Qty (%) Product Sodium Chloride 57.23 Ca and Mg carbonate Combination Mineral (Dolomite) 22.5 Kaloin 83 10 Sulfamic Acid 8 Spray Dried Silica 1 Sulfonicacids, Cl4-16-Alkane hydroxy and C14-16-alkene, sodium salts 1 Pigment 0.025 Fragrance 0.25 While particular embodiments have been illustrated and described herein, it should be understood that various other changes and modifications may be made without departing from 5 the spirit and scope of the claimed subject matter. Moreover, although various aspects of the claimed subject matter have been described herein, such aspects need not be utilized in combination. It is therefore intended that the appended claims cover all such changes and modifications that are within the scope of the claimed subject matter.

Claims

1) A hard surface cleaning composition comprising:a) from between about 5% to about 15% by weight of sulfamic acid or salts thereof, preferably between 7.0% to 10.5%;b) from about 0.5 % to about 5.0% by weight of an anionic surfactant, preferably between 1.0% to about 3.0%;c) at least one alkali metal salt and / or at least one alkali earth metal salt in amounts of about 35% to about 65%, preferably in amounts of about 40% to 60% ; andd) an abrasive filler component in an amount ranging from about 9% to about 55% by weight, preferably between 10% to about 45%.2) The hard surface composition of claim 1 in a solid format selected from the group consisting of plurality of particles, powder, encapsulated powders, semi-solid granules, tablets, coated tablets, and any combinations thereof.3) The hard surface cleaning composition of claim 1, wherein sulfamic acid is present in amounts ranging between 8% to 10% weight.4) The hard surface cleaning composition of claim 1, wherein the anionic surfactant is selected from the group consisting of carboxylates, sulfonates, sulfates, and phosphates salts or combinations thereof, preferably a sodium Cu-16 alkane sulfonate, a C8-C22 alkyl sulfonate, and an alpha sulfonated carboxylic acid sodium salts or ester thereof.5) The hard surface cleaning composition of claim 1, wherein the alkali metal salts and alkali earth metal salts are selected from the group consisting of chloride, carbonate, acetate, citrate or sulfate salts, preferably chloride or sulfate salts.6) The hard surface cleaning composition of claim 5, wherein the alkali metal salt is sodium chloride, sodium sulfate or combinations thereof.7) The hard surface cleaning composition of any prior claims, wherein the composition is free of any other surfactants or biocide agents.8) The hard surface cleaning composition of any prior claims, wherein the abrasive filler component is a combination of kaolin and a basic filler preferably at ratios of 1-1.5 to 1-4 respectively, preferably 1:1 to 1:2.5.9) The hard surface cleaning composition of any prior claims, wherein the abrasive filler component is selected from the group consisting of dolomite, huntitie, magesite, hydromagesite, aluminum silicate, kaolin, clay material, dioctahedral phyllosilicate clay and any combinations thereof.10) The hard surface cleaning composition according to any of prior claims, wherein the basic filler is dolomite.11) The hard surface cleaning composition of any prior claims, wherein the percent weight ratio of the abrasive filler component and the alkali metal salt ranges between 1.0 to 1.0-2.0 respectively, preferably in the range of 1:1.8.12) The hard surface cleaning composition of any prior claims, wherein at least 50% of the content of dolomite granules and sodium chloride in the composition has a particle size of ranging between 250 to 500 microns.13) The hard surface cleaning composition of any prior claims, wherein the composition further contains a sodium sulphate containing colored speckle.14) A hard surface cleaning composition comprising:a. sulfamic acid in amounts of 7.5% to 10.5% weight of the compositionb. olefin sulphonate in amounts of 1% to 3% weight of the composition,c. sodium chloride or sulphate salt in amounts of 43% to 58% weight of the composition, andd. an abrasive filler component containing a combination of kaolin and dolomite in total amounts ranging between 10% to 35% weight of the composition.5 15) A method for cleaning hard surfaces in bathrooms such as toilet bowls, urinal, lavatoryfixtures, bathroom and flooring tiles and floors by applying the cleaning composition of any of the prior claims to the area of interest and optionally applying water to remove undesirable scaling and odor in the same area.