Solid dispersed abrasive compositions and a method of production of liquid abrasive clearing compositions

FIELD: clearing of solid surfaces.

SUBSTANCE: the invention is pertaining to the field of utilization of solid dispersed abrasive compositions for clearing solid surfaces. The dry composition contains a solid material abrasive and a suspending system eligible for production of a stable suspension at mixing with a liquid medium. It is preferable, that the dry composition should contain at least 65 % of solid abrasive and at least 0.1 % of a suspending system. The suitable suspending systems are based on a surfactant or a mixture of surfactants, which are capable to form a laminated micellar phase after mixing with a liquid medium, or on the basis of polymeric infilling systems. A preferential liquid medium is water. The dry abrasive composition is easily flowing and is easily dispersed in water by a consumer with formation of a liquid clearing composition ready for use.

EFFECT: the invention ensures production of the solid dispersed abrasive compositions for clearing solid surfaces.

16 cl, 2 ex

The technical field to which the invention relates.

The invention relates to solid compositions containing abrasive material, which is suitable for dispersion in water to obtain a liquid abrasive cleaning compositions for cleaning hard surfaces.

The level of technology

Liquid abrasive cleaning compositions for cleaning hard surfaces are well known in the prior art, and they usually include a combination of detergent surfactants, especially anionic and nonionic surfactants, which together form a layered micellar phase and thereby cause the thickening of the liquid. Layered phase acts as suspendida system that keeps the abrasive material in a stable suspension. In order to further improve the stability of the suspension, are often added to the electrolyte and/or polymeric thickener.

So, in document WO 91/08283 disclosed a liquid abrasive cleanser composition containing 0.02 to 20% detergent, 1-70% granular abrasive material and 0.01-10% thickening mixtures containing linear non-starch polymer type and polymer type of branched starch (amylopectin). The non-starch polymer type include various natural resins and synthetic polymers. Especially preferred partially acetylated of Xan is an. In practice, the required amount of thickening of the mixture is approximately 3% by weight of the entire composition, and all of the examples listed 1,5% non-ionic surfactants.

In document WO 95/08619 disclosed a liquid abrasive cleanser composition containing cross-linked polyacrylate, or at least one nonionic surfactant, or a combination of anionic surfactant and nonionic surfactant, an agent that regulates pH and abrasive is calcium carbonate. Indicates that the composition containing 0.1-2% of a polyacrylate polymer, 0.1 to 10% nonionic and up to 10% anionic surfactant and 5-60% of abrasive material. In practice, in accordance with examples of the composition containing 0.25-0.4% polymer, 0.5% or more nonionic surfactants, and 40% of the abrasive material. Non-ionic surfactant is required in order to provide good frictional properties. Similar compositions disclosed in document EP 649898 with the additional condition that they contain hypochlorite and which surfactant is stable at bleaching.

In the document EP-A 0875557 described aqueous thickener composition, suitable for many end uses, which contains 0.04-30 wt.% a mixture of at least two surface-active is x substances in a predetermined ratio and the difference in hydrophilic/lipophilic balance (products HLB), at least one unit, and 0.01-5 wt.% associate thickener selected from hydrophobically modified hydroxyethyl cellulose, hydrophobically modified nonionic polyol and a hydrophobic modified emulsion polymer, soluble in alkalis. In practice, the number of associate thickener is 1-2%, and the amount of the mixture of surfactants is 1-10%.

Liquid abrasive cleaning compositions are usually sold in a form ready for consumption, and contain 10-50%, in most cases, 30-45% of solid abrasive material. Such compositions cannot be diluted, for example, to the presence of solid abrasive material 10-20% without losing their stability, which leads to the deposition. Although the patent literature indicates that the content of the abrasive reaches 70%, industrial products usually contain less abrasive.

Before liquid abrasive cleaning compositions became popular, commonly used, and in some countries are used and currently powdered abrasive compositions for cleaning hard surfaces. Such compositions are almost entirely composed of a powdered abrasive material, for example, up to 95% or more, with a small amount (<5%) foam surfactants. These compositions are applied directly on the solid surface, be cleaned and used with a small amount of water, so that has to wet the rag. Surfactant facilitates cleaning by improving the wetting properties of the mixture water/abrasive material on the surface and, in addition, provides a visual cue to clean due to the resulting foam. So, in the document PL 153680 described solid abrasive cleanser compositions containing 45-95% crushed quartz, feldspar or glass, 1.5 to 23% of synthetic anionic or nonionic surfactants (in particular the sodium salt of linear alkylsulfate (LAS) and the copolymer accelerated), chlorinated bleach, 0.1 to 50% complex phosphoric acid/urea and 0.1-25% of sodium sulfate. In the United Kingdom patent 1339274 describes similar compositions which additionally contain a compound that generates heat when mixed with water during cleanup operations. In the patent of Russia 2106376 described powdered abrasive cleanser containing crushed quartz, and sodium polyacrylate as a surfactant. This product is intended for use as a classic powdery abrasives. In the document JP-A-02029497 described abrasive cleaners, which may take the form of a powder or liquid and which is kept hydroxyapatite as an abrasive agent and a surfactant. In the document EP-A-0821721 described ready-to-use abrasive powders containing a mixture of carbonate and bicarbonate as a water-soluble abrasive, anionic detergent and a solid hypochlorite bleach.

Powdered abrasive cleanser compositions of the prior art cannot be turned into a liquid abrasive cleanser composition as simple as adding a suitable amount of water, as surface-active substance present in the powder mixture, is not intended (and perhaps unable) to form a layered micellar phase, which is necessary in order to keep the solid abrasive material in a stable suspension. Thus, the abrasive will be quickly allocated to and deposited on the bottom of the vessel.

However, it would be useful to have a dry mixture or in the form of powder or granules, or other suitable solid form, which acts as an instant abrasive cleanser, i.e. can be turned into ready and stable liquid abrasive cleaning composition by adding a suitable amount of water. Thus, it would be possible to save the costs for packaging and transport that are associated with loading large quantities of water, and resolve problems during storage, which adversely affect the stability of the liquid system is s, ready-to-use.

To remove heavier dirt from the skin also known dry abrasive powders soap. Such products are described, for example, in U.S. patents 4786432 and 4786369; they consist of abrasive particles coated with anionic surface-active agent, mainly soap and fatty acids. Usually soap powders contain no more than about 80% of the abrasive material, and in most cases not more than approximately 50%. In the document EP-B-0796318 described solid free-running products designed for cleaning hands. These compositions are obtained by drying in the fluidized bed and granulating a mixture of detergent paste and abrasive material selected from the pumice, wood flour, ground walnut shells or plant fibers. Such powders are not intended for dilution with water before use, and apply them in the system Soaps does not have any suspendresume properties of the abrasive material.

In document WO 94/25563 described tablets, blocks or similar molded articles containing surfactants and optional abrasive materials. They are intended for use in cleaning equipment and it is not suitable for transfer in stable suspension. It is noted that for blocks and applied what I eliminates the need for suspendida system.

However, there are no indications that any of the above solid product can be converted into a stable suspension.

Brief description of the invention

The invention provides a dry solid compositions which can be mixed with a liquid medium, in order to provide a stable, ready-to-use liquid abrasive cleaning composition for hard surfaces. Thus, the dry compositions contain a particulate abrasive material and suspenders system that keeps the abrasive in a stable suspension after mixing with liquid medium.

This invention also provides a method of producing a liquid abrasive cleaning compositions, which includes a stage of mixing the dry composition, which comprises a solid abrasive material and suspenders system with liquid environment without the need for any further mixed with additional components.

In addition, the invention provides a liquid abrasive cleanser composition obtained in accordance with the above-described method.

Detailed description of the invention

All contained in the description percentages are given by weight, based on the total composition, unless otherwise indicated.

According to the invention dry abrasive cleaning compositions contain as essential components of a solid the abrasive material as a main component, preferably in the amount of at least 55% and suspenders system suitable for obtaining a stable suspension when mixed with a liquid medium, preferably in amounts of at least 0.1 percent.

For the consumer it is convenient that these dry compositions can be mixed with the liquid environment at home, to get ready to use liquid abrasive cleaner. Alternatively, the dry composition may be delivered to the plant, where it is sufficient to use simple equipment for mixing, in order to make the dry composition in a ready-to-use liquid abrasive composition, prepared for packaging and transport to the consumer.

Liquid medium can be any liquid that is suitable and safe for use by consumers. Thus, it should be harmless to health and preferably non-flammable. Water is an obvious choice, but it can also use some organic solvents or mixtures of organic solvents with water. Preferably the liquid medium contains at least 85% water.

Preferably the content of the abrasive material in the dry composition is at least 65%, more preferably at least 70% or even 75%. The abrasive may be any finely ground solid is the second substance, known from the prior art as suitable as abrasive material. Most of these known materials insoluble in water, but is also known suitable materials, which are soluble in water. Preferred abrasives have a Mohs hardness equal to 6 or below 6, although for special applications can be used abrasives with higher hardness. Usually the lower the hardness of the abrasive material, the less damage to the surface, although it is preferable to Mohs hardness equal to 1 or more, in order to ensure sufficient cleaning ability.

Suitable water-insoluble abrasive materials you can choose from synthetic materials, as well as from naturally occurring materials (minerals), examples of which include: zeolites, silicas, silicates, carbonates, alumina, and organic polymeric abrasives, such as polyethylene, polycarbonate, polyurethane, polystyrene, polypropylene, polyethylene terephthalate, polymethyl methacrylate and nylon, and mixtures thereof. The preferred abrasive materials are: calcium carbonate (as calcite), a mixture of carbonates of calcium and magnesium (dolomite), zeolite, alumina, hydrated alumina, feldspar, talc and silicon dioxide. Especially preferred are calc is t, dolomite and mixtures thereof with low silica content, especially amorphous silica, due to their low cost and good abrasive properties.

Suitable water-soluble abrasive materials include sodium carbonate, sodium bicarbonate, sodium tripolyphosphate, sodium borate and potassium sulfate. Water-soluble abrasive when mixed with water gives a saturated aqueous solution of abrasive material and a solid phase dispersed abrasive particles suspended in the aqueous solution. Liquid abrasive cleanser composition of this type is described in document EP-A-0193375.

The preferred average particle size of the abrasive material is in the range of 0.5-500 μm, with values from about 10 to 100 microns are especially preferred. In this interval an acceptable compromise between good performance when cleaning and low degree of damage to the substrate. However, in the case of silica in combination with calcite or dolomite is also very suitable are particles having an average size in the range of 200-500 microns.

Suspendida system can be any suspendida system known from the prior art for a suspension of abrasive particles in a liquid abrasive cleanser composition. Good ready-to-use liquid abrasive is cleansing compositions obtained from dry abrasive compositions according to the invention must have such characteristics of the liquid stream to be stable suspensions before use, but they are mobile enough to flow as a liquid from the container and spread on contaminated surfaces without the appearance of thin and watery view. Thus, the type and number of suspendida system are chosen so that the suspension obtained after mixing the dry composition with an equal amount of water had the following characteristics yield:

η₀equal to at least 2500 PA·

σ_with2.5-25

η₂₁equal to at least 0.1 PA·C

where η₀represents the viscosity at zero shear rate; σ_withis the tension of the shift at which the viscosity is 0.1η₀; and η₂₁is the viscosity at the shear rate of 21^-1.

Preferably η₂₁0.3 to 5.0, more preferably from 0.6 to 1.8, most preferably 1.0 to 1.5 PA·C.

Measurements are made on instruments CSL 100 (firm TA Instruments) with a measuring system of the blades and the drum (inner drum diameter is 48 mm, the diameter and the height of the blade 38 mm and 24.5 mm)to determine the viscosity at tension (σ) from 0.01 PA to tension necessary to obtain the MSE of the spine shift 1 ^-1. For measuring the viscosity at the shear rate from 0.1 to 389^-1use the instrument Haake RV20 with the measuring nozzle M5 and measurement geometry SV2p. All the measurements were carried out at 20°C.

Well-known suspendresume systems include a surfactant or mixture of surfactants, preferably in combination with the electrolyte, in such amount and ratio to the total composition was capable of forming layered micellar phase. This surfactant or surfactants may be foaming surface-active substance, and in this case it was unnecessary to add the optional excess foam surfactants in order to obtain the desired foaming characteristics. Preferably surfactant or surfactants are anionic. Very suitable suspendresume system can be obtained by combination of anionic surfactants with electrolyte, non-ionic surface-active agent or a cationic surface-active agent. Particularly preferred systems include anionic surfactant and nonionic surfactant, and optionally, additional soda is containing the electrolyte.

Such suspendresume system contained in the dry abrasive compositions preferably include the following:

of 0.5-30% anionic surfactants, preferably from 1.5 to 25%, more preferably 2.5 to 20%;

is 0.2 - 20% non-ionic surfactants, preferably 1.5 to 15%, more preferably 1.5%to 12%;

Suitable anionic surfactants are water soluble salts of complex organic esters of sulfuric acid and sulfonic acids, which have in their molecular structure an aliphatic group containing from 8 to 22 carbon atoms.

Suitable examples of anionic surfactants are water-soluble salts of:

- sulfates of long chain aliphatic alcohols, especially those which are formed during the sulfonation higher alcohols formed in the restoration of the glycerides of vegetable oils or animal fats, such as tallow or coconut oil;

- alkylbenzenesulfonates, for example those in which the alkyl group contains from 6 to 20 carbon atoms;

secondary and primary alkanesulfonyl;

- sulfates alkylglycerols ethers, especially those ethers of higher alcohols obtained from tallow and coconut oil;

- sulphate of monoglycerides of fatty acids;

the sulfate is in ethoxylated fatty alcohol, containing from 1 to 6 parts of ethylene oxide in the molecule;

- sulfates ethoxylated alkylphenol containing from 1 to 8 units of ethylene oxide in the molecule, in which the alkyl radicals contain from 4 to 14 carbon atoms;

- product of the interaction of fatty acids, for example, those derived from coconut oil, esterified italianboy acid and neutralized with sodium hydroxide; and mixtures thereof.

Highly preferred water-soluble synthetic anionic surface-active components suspendida systems are: salts of sodium, potassium and magnesium alkylbenzenesulfonate, reincorporates, alkyl sulphates, sulphates of monoglycerides of fatty acids. These surfactants also perform the function of a foaming agent.

In the absence of a source of calcium ions, such as calcite or dolomite, soap of fatty acids are also suitable as anionic surface-active material. Even in the presence of calcium ions may be useful to add a small amount of fatty acids (less than 4.5%), to improve the stability of the suspensions after dilution.

One class of suitable nonionic surfactants in General can be described as compounds obtained by condensation alkalinising groups, which are hydrophilic in nature with an organic hydrophobic compound, which may be aliphatic or alkylaromatic in nature. The length of the hydrophilic or polyoxyalkylene radical that is attached to any particular hydrophobic group can be easily adjusted so as to obtain water-soluble compound having the desired degree of combination of hydrophilic and hydrophobic elements. It provides a choice of non-ionic surfactants with suitable products HLB value.

Specific examples include:

the condensation products of aliphatic alcohols containing from 8 to 22 carbon atoms or a linear or branched circuit configuration with ethylene oxide, such as the condensation products of coconut alcohol with ethylene oxide having from 2 to 15 mol of ethylene oxide per mole of coconut alcohol;

the condensation products of ALKYLPHENOLS in which the alkyl group contains from 6 to 12 carbon atoms, from 2 to 25 mol of ethylene oxide per mole of alkylphenol;

- product of the condensation product obtained by the interaction of ethylene diamine and propylene oxide, with ethylene oxide, and these condensate contains from 40 to 80 wt.% parts of ethylene oxide and have a molecular weight of from 5000 to 11000.

Other classes of nonionic surfactants are:

- oxides of tertiary amines patterns RRRNO, where one group R is an alkyl containing from 8 d is 18 carbon atoms, while each of the other groups R represents an alkyl or hydroxyalkyl group containing from 1 to 3 carbon atoms, for example the oxide dimethyldodecylamine;

the tertiary phosphine oxides of structure RRRPO, where one group R is an alkyl containing from 8 to 18 carbon atoms, and each other is an alkyl or hydroxyalkyl group with 1 to 3 carbon atoms, for example the oxide dimethyldodecylamine;

- diallylsulfide patterns RRSO, where one group R is an alkyl containing from 10 to 18 carbon atoms and the other represents a methyl or ethyl group, for example methylcellulose;

- alkylolamides fatty acids;

the product of condensation of alkalisation with alkylolamides fatty acids and

- allylmercaptan.

Particularly suitable components suspendida system are the condensation products of aliphatic alcohols with ethylene oxide and oxides of amines. Aminoxide also can perform the function of the foaming agent.

Other well-known suspendresume systems include one or more polymeric thickening agents. The polymers in such systems can be of natural or synthetic origin. Often suitable polymers are the polymers of the anionic type. They are available in the form of an emulsion and in solid form. Moreover, e is and the polymer can be hydrophobic modified and/or custom made. Such polymers include polymers polycarboxylate type, such as homopolymers and copolymers of: acrylate, methacrylate and maleic anhydride, and various polysaccharides, such as carboxymethylcellulose, hydroxyethylcellulose, hypromellose, carrageen, alginate, resin tragakant, resin carob, guar gum, etc. These polymers should be easy to dissolve and tagomatic in cold water without forming lumps.

Examples of suitable polymers include:

A number of ACUSOL HASE and ASE, such as 820, 842;

A number of POLYGEL/NEUTRAGEL, such as W30, DA, DS, DR and DB;

A number RHEOVIS, such as CRX.

A number of CARBOPOL, such as Aqua 30, ETD 2690, ETD 2691, ETD 2623, EZ-1, EZ-2, EP-1, LNP-3, 663, 664, and 674;

A number of PEMULEN, such as TR1 and TR2;

STRUCTURE 2001, 3001;

ALCOGUM SL-70 and SL-78,

ACUSOL is a trademark of Rohm & Haas; CARBOPOL and PEMULEN are trademarks of the company In F Goodrich; POLYGEL and NEUTRAGEL are trademarks of the company Sigma 3V; RHEOVIS is a trademark of Ciba Specialities; STRUCTURE is a trademark of National Starch &Chemical Co.; ALCOGUM is a trademark of the company Alco.

The amount of polymer suspendida system which should be used in dry abrasive compositions according to the invention, is chosen so that the viscosity of the suspension obtained upon dilution with an equal amount of water, were in the above range. This is the number of status is made, at least 0.1% and typically will not exceed 10%.

You can also use combinations of surfactant and polymer suspendida system. In particular, the stability of the suspension-based system, suspendida surfactant may be further improved by further adding a small amount of thickening polymer in dry abrasive composition.

Optional probratysya surfactants, if they're not already present in the system, suspendida surfactant can be selected from known penoobrazujushchim non-ionic, anionic, amponsah and amphoteric surfactants, which do not render harmful influence on suspenders system.

Ready-to-use liquid abrasive cleanser composition should preferably have a pH value between 5 and 14. Improved cleaning properties is achieved in alkaline composition when the pH value of the cleaning composition preferably greater than 9, and more preferably less than 12. If necessary, the cleaning composition should contain an additional system for regulating the pH, such as a suitable basis to maintain the pH value of the liquid cleansing composition in the desired range. Suitable bases are, for example, hydroxide alkali metals or carbonates of alkali metals, ammonium carbonate, organic bases such as triethylamine, aminomethylpropanol (AMP), aminobutanol, mono-, di - or triethanolamine, mono-Isopropylamine, or aminomethylpropanol.

According to the invention dry abrasive composition may contain optional components that enhance its cleansing properties. Examples of such components are solid bleaching agents. In the latter case, it is obvious that other components of dry compositions, in particular surface-active substances and suspendresume system must be stable to the bleaching agents. Other examples are organic solvents, such as hydrocarbons and terpenes, alkanolamine, (poly)ethylene and (poly)propylene glycols and C1-C6-alkalemia and phenyl ethers. The number of such solvent should be such as not to impair the properties of the free flow of dry compositions, and therefore, usually it is below 6%.

In addition, the dry composition may contain other optional components, are well known in the field of production of liquid abrasive cleaning compositions, such as components:

- improve their attractiveness to consumers, such as coloring agents, optical brighteners and especially perfumes;

- prevent microbial contamination or giving the product ant the microbial properties, for example, preservatives and bactericides;

- improving their performance properties, such as agents that improve fluidity (layered agents, less than 10%)to prevent the formation of lumps of dry composition (for example, Alusil ET, porous silicate of aluminum, the product of the firm J. Crosfield and Socal P2V product company Solvay), dispersing agents, in order to achieve the easy dispersion of the dry composition in water and/or to give the resulting suspension stability during freezing/thawing (for example, anionic polymers with a molecular weight <100000, STP, and/or other organic or inorganic phosphates or phosphonates), defoamers to prevent excessive foaming (e.g., fatty acids).

Particularly preferred components are additive for the free flow and dispersing agents.

Dry compositions according to the invention can have any form which is suitable for easy dispersion in water, such as powder, granules, beads or even tablets. Preferably a powder, granules and beads should be easily flowing. To obtain products that flow freely and easily dispersed without forming lumps, very suitable methods spray drying, drying in the movable layer, granulation and similar processes known from the prior art. When granulating m which may be useful to add an auxiliary means of granulation, such as polyethylene glycol, with a molecular mass of 1500-4000.

Tablets can be obtained by pressing a specified number of the above products. They may contain loosening adjuvant, in order to improve dispersion in water. Such loosening auxiliary means well known in the field of Laundry and detergent tablets for dishwashing machines.

Ready-to-use liquid abrasive cleanser composition can be obtained from the dry compositions by adding an appropriate amount of water. Usually you need to add so much water to the liquid product contained between 10 and 65% of solid abrasive material, preferably between 10 and 60%, more preferably between 15 and 50%, and this product has a viscosity of η₂₁between 0.4 and 3.0 PA·C, preferably between 0.8 and 2.5 PA·C, more preferably between 1.0 and 2.0 PA·C.

Preferred compositions

The preferred dry composition containing suspenders system based surfactants, usually can have such a composition as shown below:

The preferred dry composition containing suspenders system based thickening substances, usually can have such a composition as shown below:

EXAMPLES

Example 1

Prepare solid abrasive composition, containing suspenders system based surfactant and having the composition below:

Sour linear alkylsulfate 5,97

Lialet 111-5 .5 1) 3,13

Omyacarb 30AV 2) 79,57

Sodium carbonate 7,22

Prifac 7901 3) 0,90

ACUSOL 823 4) being 0.036

Odorant 0,72

Proxel GXL 5) 0,028

Socal P2V 6) 1,00

Alusil 7) 0,75

Water 0,67

1) non-ionic surfactant is an ethoxylated alcohol, a product of the company Condea Chimica DAC.

2) Calcite, a product of the company Omya, the average particle size is specified equal to 30 microns.

3) a Mixture of fatty acids, a product of the company UniQema

4) Polyacrylate, a product of the company Rohm & Haas

5) Fuse, a product of the company Zeneca Biocides

6) an Agent that promotes fluidity, firm Solvay

7) Silicate of aluminum, the product of firm J Crosfield.

Product Omyacarb and sodium carbonate are heated in the bowl 10-liter high-speed mixer/granulator RotoJunior (firm Zanchetta & C.s.r.l., Italy), until it reaches a temperature of approximately 50°C. First, add sour linear alkylsulfate heated to 50°and let him be distributed throughout a mixture of solid substances. After dispersion in a bowl add the mixture of non-ionic surfactants, fatty acids, polymer and small additives (except agent that promotes fluidity, and perfumes). Sour linear alkylsulfate, and a mixture of non-ionic surface-active is wow substances added slowly, during the rotation of the stirrer (300 rpm); the time required to add these liquids is approximately 2 minutes.

When you are finished adding liquids work RotoJunior continues under stirring with a vibrator (1400 rpm) and heated (65°C) for 10 minutes then turn off the stirring and vibration and RotoJunior cool water for 20 minutes, to cool the product. Every 5 minutes the stirrer include again for a few seconds for mixing. Then add the agent that promotes fluidity (Socal U2), and the material is unloaded. Then outside, add the flavoring, using a spray bottle and keg.

Example 2

Prepare hard abrasive composition comprising suspenders system based on polymeric thickener and having the composition below:

Calcite 95

CARBOPOL ETD 2623 1) 0,36

(16-18)alkyl-dimethylamine 0,42

AMP (2-amino-2-methylpropanol-1) 0,38

NaOH 1,00

Odorant 0,84

Water and other 100

1) polyacrylate, supplied by the company B.F. Goodrich.

The mixing process is carried out in a mixer Kenwood Chef, using the nozzle forms of “To”in accordance with the methodology specified below:

1) in the bowl for stirring the calcite;

2) add the powder polymer and mixed together for approximately 5 minutes, setting a low speed mixing environment for the CSOs in order to avoid any loss of powder. The remaining liquid components are added using a pipette;

3) with stirring AMP, pre-dispersed in 1% water (approx);

4) add sodium hydroxide (10%solution), stirred for approximately 5 min;

5) add aminoxide;

6) add flavoring; mix for approximately 20 minutes until it forms a satisfactory homogeneous mixture.

1. Dry solid composition comprising a particulate abrasive material suitable for dispersion in water to obtain a composition used for cleaning hard surfaces, characterized in that it includes suspenders system suitable for obtaining a stable suspension when mixed with the liquid medium.

2. Dry abrasive composition according to claim 1, characterized in that it contains at least 65% of solid abrasive material and at least 0.1% of suspendida system.

3. The composition according to claim 2, characterized in that the content of the abrasive material is at least 70%.

4. Composition according to claims 1 to 3, characterized in that the abrasive material is not soluble in water.

5. Dry abrasive composition according to claims 1 to 5, characterized in that suspenders system is chosen so that the suspension obtained after mixing the dry composition with an equal amount in the water, had the following characteristics fluidity; η₀equal to at least 2500 PA·; σ_with2.5-25; η₂₁equal to at least 0.1 PA·s; where η₀represents the viscosity at zero shear rate; σ_withis the tension of the shift at which the viscosity is 0.1 η₀and η₂₁is the viscosity at the shear rate of 21^-1.

6. Composition according to claims 1 to 5, characterized in that suspendida system contains one or more surfactants capable of forming layered micellar phase when mixed with liquid medium.

7. The composition according to claim 6, characterized in that the surfactants include anionic and nonionic surface-active substance.

8. Composition according to claims 1 to 5, characterized in that suspendida system contains one or more polymeric thickening agents.

9. The composition according to claims 1 to 8, characterized in that it contains at least 0.1% of a foam surfactant.

10. The composition according to claims 1 to 9, characterized in that it contains an agent that facilitates fluidity, and/or dispersing agent.

11. The composition according to claims 1 to 10, characterized in that it is subjected to processing to make it easy flowing and easily dispersible.

12. The composition according to claim 11, characterized in that the processing is selected from raspi is sustained fashion drying, drying in the movable layer and granulation.

13. The method of producing a liquid abrasive cleaning compositions, comprising mixing the dry composition according to any one of claims 1 to 12 with a liquid medium.

14. The method according to item 13, wherein the liquid medium contains at least 85% water.

15. The method according to item 13 or 14, characterized in that the ratio of liquid medium to the dry composition is chosen so that the liquid abrasive cleanser product contained 10-65% of solid abrasive material.

16. The method according to p-15, characterized in that the quantity of liquid medium is chosen so that the liquid abrasive cleanser product had a viscosity of η₂₁between 0.4 and 3.0 PA·C.