Solid surface cleaning composition and cleaning process

FIELD: cleaning means.

SUBSTANCE: invention relates to liquid compositions for cleaning solid surfaces and is proved in the form of clear liquid gel with abrasive component and includes one or several cleaning surfactants, abrasive particles, thickening agent and, if necessary, optional components. Abrasive particles dispersed in liquid gel are macroscopic with average particle size between 0.5 and 2.5 mm, all particles having particle size deviation limits ±70% from average particle size.

EFFECT: improved appearance and cleaning characteristics of composition.

14 cl, 3 ex

The scope to which the invention relates.

The present invention relates to liquid compositions for cleaning hard surfaces. In particular, the invention relates to liquid cleaning gels containing macroscopic solid particles.

The prior art prior to the invention of

Liquid abrasive cleaning compositions for solid surfaces are well known. They usually are meticulously white. They have significant viscosity at low shear stress, in order to keep fine particles, uniformly distributed (dispersed) in the liquid, despite the fact that at the same time, when dispensing or pouring from a bottle they behave as a true liquid. Fine abrasive particles (powder) in these compositions, in General, have a particle size below 200 microns, in the vast majority of cases - less than 100 microns. Well-known abrasives used in such compositions include silica, calcite, feldspar and the like inorganic materials, or particles of some organic polymers, all of which Moh's hardness up to 6. Although many consumers widely use such compositions, some did not evaluate their feelings or appearance of these products or are afraid that they may not provide care.

Some liquid ADB is invasive products, offered for sale is composed of a gel-like opaque liquid, which is dispersed a lot of large raw and small irregular shaped abrasive polymer particles with different diameters ranging from less than 1 mm, on the one hand, difficult to the naked eye, on the other hand. Because of this, the appearance of the product generally unattractive. Thus, there is a need for a new liquid product for cleaning hard surfaces, containing solid particles, which is visually appealing to the consumer and at the same time effectively cleans.

Among the means for cleaning the skin are known as facial scrubs and consist of a transparent viscous liquid, which is distributed coarse abrasive particles. Because such products are in contact with the skin, they should be almost neutral pH. They usually contain little or does not contain detergent surfactants and such surfactants are selected from those which have a beneficial effect on the skin and usually expensive. These tools are designed specifically for cleansing the skin and is usually not used for other purposes, more precisely, to remove stubborn dirt hard surfaces.

In the patent US 5741770 and WO 97/41204 described liquid crystal which contains a cleaning composition, which are transparent or slightly turbid and contain a small amount of abrasive particles. These particles can be zeolite with an average particle size 8-10 μm made of amorphous silicon dioxide with a particle size of up to 300 μm or polyethylene powder with a particle size of up to 500 μm

In WO 00/65019 described liquid abrasive cleaning compositions containing finely dispersed abrasive particles, and in addition to these microcapsules containing various additional components such as fragrances, silicone oil, etc. by a certain number and size of particles contained abrasive - these songs clearly not transparent and not transparent.

In WO 00/36078 described transparent fluid detergent compositions for washing, containing at least 15% surfactant. These compositions are thickened to provide suspension of microscopic capsules containing the ingredients that you want to protect from the effects of concentrated and highly alkaline solution of detergent. Similar compositions, other applications described in GB 1303810. Their capsules do not have abrasive properties.

Thus, despite the fame of the prior art various liquid compositions containing suspended particles with a large variability frequent size is C and not agreed form, for a variety of purposes and uses, methods and tools (or measures), which improves the appearance of such compositions for the consumer, it seems, have gone unheeded.

Brief description of the invention

The invention provides a liquid cleaning compositions for solid surfaces, which are transparent as water liquid gels containing one or more detergents surface-active substances (surfactants), and microscopic abrasive particles, which are dispersed to a stable state in the liquid environment.

The invention also relates to a method of cleaning hard surfaces, comprising a stage of deposition on the surface of the transparent liquid gel that contains one or more detergent surfactants and microscopic abrasive particles dispersed in a liquid.

Detailed description of the invention

All quantities specified in percent, indicated here by weight and calculated on the total composition, unless otherwise specified.

The cleaning compositions of this invention are transparent aqueous liquid gels. Thus, all the components of the compositions, except for the abrasive particles, soluble in water. The viscosity required to make the composition gel consistency, is achieved by the addition of suitable thickening agents which provide transparent the te solution.

Such thickening agents are well known and suitable examples are vegetable or received using microorganisms polysaccharides, such as Arabian gum, xanthan gum, alginates and the like, and synthetic polymers, such as homopolymers of acrylic, methacrylic or maleic acid and their copolymers with each other and/or other monomers, such as styrene, vinyl esters, etc. such as those offered by various manufacturers under various brand names, for example, ACUSOL, POLYGEL, CARBOPOL, RHEOVIS and similar products.

For the purposes of the present invention believe that the gel is transparent, if he misses at least 50% of the light of one specific wavelength in the visible spectrum, i.e. between 400 and 800 nm, preferably 550-700 nm, measured in a 1 cm cuvette in the absence of dyes and abrasive particles. Preferably, the transmittance is at least 70%, more preferably at least 90%.

Gels, are considered appropriate for the purposes of the present invention, in General, have a viscosity of from 100 to 1000 mPas, preferably at least 250 MPa, more preferably 300-750 MPa 21 sec^-1(measured using a Haake viscometer at 20°). The viscosity at a low shear rate such that the gel can be suspended macroscopic hour of the Itza.

In many liquid abrasive cleaning compositions known from the prior art, the desired viscosity is obtained using somosaguas (structuring) of surfactant mixtures, often in combination with electrolytes. Although described that some specific combinations of surfactants in certain circumstances, result in a transparent or translucent liquid crystalline structure, such thickening system is mainly applicable for the purposes of this invention. Most of the structured surfactant systems makes the liquid is opaque.

Abrasive particles

To the cleaning compositions of the present invention visually attracted the attention of consumers, the particles are macroscopic, i.e. visible to the naked eye.

This is the opposite of the vast majority of abrasive powder particles, which, in General, have an average particle size substantially less than 0.3 mm and in most cases almost 0.1 mm (100 μm).

Thus, the particles according to the invention have an average particle size between 0.3 and 2.5 mm, preferably more than 0.5 mm and at most 1.5 mm Further, the appearance of the composition is significantly improved, despite the fact that the particles are more uniform in size, for example, they all have a size in the range ±70% of the average particle size, preferably within ±50%, more preferably ±30%.

The abrasive particles used in the amount of at least 0.1 percent, preferably 0.5 percent. To the composition was transparent, the maximum number of particles should be 20%, preferably 10%, more preferably 5%.

These particles can be particles of known abrasive materials. So that they can consist of granules of one or more well-known inorganic abrasives, such as silicon dioxide, silicates, calcite, etc. They may consist of granules of a polymer, such as polyethylene, polypropylene, polycarbonate and the like, In particular, are suitable granules from a biodegradable polymer, for example, is known based on starch polymers.

Alternative abrasive particles can be made of softer materials, such as solid wax and fats, hardened fatty acid, soap-based solidified fatty acids and the like, Such materials can also be mixed with the crushed particles of any of the known abrasives or other materials, preferably solid materials suitable for treatment processes and therefore containing granules of the desired size.

Attractive appearance of the particles and, consequently, of the whole composition even more improved if the particles they shall have a certain minimum sphericity, so that the ratio of the longest and shortest diameters of the particles in any one direction would be almost 3:1, preferably about 2:1 or even 1.5:1. Particularly preferred particles are round, preferably a smooth round shape. Such particles can be produced by curing by spraying molten salts, including the melting of the material for the particles, turning it into droplets, which are then cooled in a stream of gas (air). Various methods and suitable equipment well known and can be used for organic abrasives, unless they are viscoplastic. Viscoplastic powders, for example, inorganic abrasive powders can be converted into particles with an acceptable form by various known methods agglomeration, if you want to use a sintering binder.

Despite the fact that the cleaning compositions according to the invention, can consist of colourless liquid and solid particles from their natural color (often white), these songs are much more attractive to the consumer when the liquid and particles are distinctly different colors. They can have different shades of the same color, such as dark blue particles in a light blue liquid, or preferably a liquid and particles of contrasting CEE is s, for example, white particles in liquid blue, green, or yellow, or Vice versa, colored particles in a liquid of a different color.

the pH of the cleaning compositions can vary within wide limits and generally is between 2 and 14. Some surfaces are sensitive to acids and they recommended composition with a pH of at least 3, preferably 3, 5 or even of 4.0. Cleansing greasy dirt is often enhanced by alkaline pH, i.e. above 7, preferably more than 7.5, a pH in excess of 12, mostly not applicable.

Surfactants

The compositions of this invention include one or more surfactants, which may be selected from a wide range of anionic, nonionic, cationic, amphoteric and zwitter-ionic surfactants, examples of which are given below.

Suitable class of anionic surfactants are water - soluble salts of organic esters of sulfuric acid and sulfonic acids having in the molecular structure an alkyl group with 8-22 C atoms or alcylaryl group containing 6-20 C-atoms in alkalino part.

Examples of such anionic surfactants are water-soluble salts of:

- sulfates of long chain alcohols (referred to here as PAS), especially those derived by sulfation of fatty alcohols obtained by reduction of glycerides of fat or oil engine coconut;

- Livenza-sulfonates, for example, those in which the alkyl group of 6-20 carbon atoms;

- secondary alkanesulphonic.

Suitable are salts of:

- sulfates alkylglycerol esters, especially esters of fatty alcohols derived from fat fat or oil engine coconut;

- sulphate of monoglycerides of fatty acids;

- sulfates ethoxylated aliphatic alcohols containing 1-8 of ethylenoxide;

- sulfates alkylphenolic of ethylenoxide with 1-8 ethylenoxide molecule and in which the alkyl groups contain 6-14 carbon atoms;

- the reaction product of fatty acids esterified isetionate acid and neutralized with alkali.

A suitable class of nonionic surfactants can be broadly described as compounds obtained by the condensation of simple alkilinity oxides, which are inherently hydrophilic, hydrophilic organic compound which may be aliphatic or alkylaromatic in nature. The length of the hydrophilic or polyoxyalkylene chain that is attached to any particular hydrophobic group can be readily selected in order to obtain a water-soluble compound with the desired balance between hydrophilic and hydrophobic parts. This gives you the choice of non-ionic surfactants to correct the HLB.

Some examples include:

the condensation products of aliphatic alcohols having 8-22 carbon atoms in straight or branched chain configuration, with ethylene oxide, for example, condensates of ethylene oxide and alcohol kernel, coconut, 2-15 by moles of ethylene oxide per mole of alcohol kernel coconut;

condensates of alkyl phenols with₆-C₁₅-alkyl groups, by 5-25 moles of ethylene oxide per mole of alkylphenol;

condensates of the reaction product of ethylene-diamine and propylene oxide with ethylene oxide, the condensates containing from 40 and up to 80% of ethylenoxide by weight and having a molecular weight of 5000-11000.

In other classes of nonionic surfactants include:

- Alkylglucoside, which are the condensation products of aliphatic alcohols with long chain saccharides;

- tertiary aminoxide patterns RRRNO, where one R is an alkyl group of 8-20 carbon atoms and where R each is alkyl or hydroxyl functions with 1-3 carbon atoms, for example, dimethyldodecylamine;

- tertiary phosphine oxides of structure RRRPO, where R is an alkyl group with 8-20 carbon atoms and the other R are each alkyl or hydroxyalkyl with 1-3 carbon atoms, for example, dimethyldodecylamine-oxide;

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

- alkylolamides fatty acids;

- acceleratedly condensate of alkylolamides fatty acids;

- allylmercaptan.

Suitable amphoteric surfactants are derivatives of aliphatic secondary and tertiary amines containing alkyl group with 8-20 carbon atoms and aliphatic group, substituted anionic odocoileinae group, for example, sodium-3-dodecylthiophene, sodium-3-dodecylbenzenesulfonate and sodium-N-2-hydroxydiphenyl-N-methyltaurine.

Examples of suitable cationic surfactants can be found among the Quaternary ammonium salts having one or more alkyl or Uralkalij group with 8-20 carbon atoms and two or three small aliphatic (e.g., metal) groups, for example, cetyltrimethylammonium-bromide.

Examples of suitable, zwitter-ionic surfactants can be found among the derivatives of Quaternary ammonium, sulfonamid and fofanah compounds bearing aliphatic group with 8-10 carbon atoms and aliphatic group, substituted anionic water-solubilities group, for example, 3-(N,N-dimethyl-N-hexadecyl-ammonium-propane-1-sulfonate betaine, 3-(dodecylbenzenesulfonic)-propane-1-sulfonate betaine and 3-(ceilometer-phosphonium)-econsultant betaine.

Other when the EPAM suitable surfactants are known compounds, used as surface-active substances, described in well-known directories: "Surface Active Agents", vol.1, Schwartz & Perry, Intersicence 1949, vol.2, Schwartz, Perry &Berch, Intersience 1958, in the recently published "McCutcheon''s Emulsifiers and Detergents", published. Manufacturing Confectioners Company or in Tensidetaschenbuch", H.Stache, 2nd Edn, Carl Hauser Verlag, 1981.

Anionic and non-ionic surfactants and combinations thereof are particularly preferred. Selecting (combination) of the surfactant should be guided by the fact that they must give a clear solution. If necessary, you can add hydrotropes, such as Na xylan or cumenesulfonate or other known equivalents.

Surfactants, mainly present in the amount of at least 0.1 wt./%, but below 15 wt.%, preferably 0.5 to 10 wt.%, more preferably, at least 1.0 wt.%.

Optional components

Compositions according to this invention may contain various optional components, well known in this area, which increase the cleaning ability or attractiveness to the consumer. Therefore, these compositions can include binding, chelating agents, electrolytes, organic solvents, active halogenated or peroxidative funds, pH-regulating agents, antispyware, antimicrobial agents, preservatives, perfumes, insect repellents, etc.

Way

Method of purification of the solid is poverhnosti comprises applying to the hard surface of a suitable amount of the claimed compositions followed, usually by rubbing the composition on the surface with a cloth or rags. The composition can be applied directly to the surface or first (preferably wet) cloth or rag and then RUB on the surface side of the cloth, which is applied to the cleaning composition. When the abrasive particles consist of a polymer or other relatively soft material, such compositions according to the invention is very suitable for purification is particularly sensitive to the cleaning of surfaces that can be damaged easily.

Example 1.

Prepared transparent liquid gel blue color according to the following composition, containing buried him granules on the basis of fatty acid with 0.8 mm±20%.

Example 2.

Prepared transparent liquid gel green color according to the following composition, containing buried him polyethylene pellets with a diameter of 0.8 mm±20%. The product had a viscosity of 380 MPa at 21 sec^-1, 20°and pH 11.

Example 3.

According to the following composition was prepared slightly acidic (pH about 4.5), hydrogen peroxide, transparent gel, cleaning hard surfaces. It dispersed particles of fatty acids containing 10% by weight (based on the mass of these particles) sodium bicarbonate particle size of 1.0 mm±20%.

Trademark Dequest 2046 is the sodium salt ethylenediaminetetramethylene acid.

Prifac 7907 is distilled mixture of fatty acids derived from coconut oil and put on the market by the company Uniqema, Gouda, the Netherlands.

The fatty acid used for pellets, is a mixture of fatty acids derived from fat.

1. Composition for cleaning hard surfaces in the form of a transparent liquid gel abrasive component that includes one or more of ousa surfactants, abrasive particles, thickening agent and, if necessary, optional components, characterized in that the abrasive particles dispersed in a liquid gel, are macroscopic with an average particle size of from more than 0.5 to 2.5 mm and all particles are within a deviation of particle sizes plus or minus 70% of the average particle size.

2. The composition according to claim 1, characterized in that the average particle size is about 1.5 mm

3. Composition according to claims 1 and 2, characterized in that all particles are within a deviation of particle size ±50% of the average particle size.

4. The composition according to claim 1, characterized in that the abrasive particles have a spherical shape, and the ratio of the largest and the smallest diameters of the particles in any direction is about 3:1.

5. The composition according to claim 4, characterized in that the particles have a smooth flat surface.

6. The composition according to claim 1, characterized in that it has a viscosity of 100-1000 MPa at 21^-1.

7. The composition according to claim 1, characterized in that the liquid gel and the abrasive particles have different colors.

8. The composition according to claim 7, characterized in that the liquid gel and abrasive particles are of contrasting colors.

9. The composition according to claim 1, characterized in that it contains at least 0.1 wt.%, but less than 15 wt.% surface-active substances.

10. The composition according to claim 1, atricauda is the, which surfactant is chosen from anionic surfactants, nonionic surfactants and mixtures thereof.

11. The composition according to claim 1, characterized in that it contains 0.1 to 20 wt.% abrasive particles.

12. The composition according to claim 1, characterized in that the thickening agent is selected from the group consisting of vegetable or obtained through microbial polysaccharides and synthetic polymers.

13. The composition according to claim 1, characterized in that the composition additionally contains a binder, chelating agents, electrolytes, organic solvents, active halogenated or peroxidative funds, pH-regulating agents, antispyware, antimicrobial agents, preservatives, perfumes, insect repellents, dyes, demineralized water.

14. Method of cleaning a hard surface comprising the stage of applying to the surface a cleaning composition according to any one of claims 1 to 13.