Particles of bleaching agent, containing sodium percarbonate and bleaching activator

FIELD: chemistry.

SUBSTANCE: invention relates to a particle of a bleaching agent, which has a) core, which contains more than 70 wt % of sodium percarbonate, b) internal envelope, containing sodium sulphate in the form of thenardite or burkeite in an amount of at least 50 wt %, and c) internal envelope, containing a water-soluble binding agent and at least one bleaching activator, selected from capable of perhydrolysis N-acyl and O-acyl compounds. The invention also relates to a method of obtaining the particle and to a detergent.

EFFECT: particles of the bleaching agent are stable in storage, suitable for storing in bins and make it possible to transport them safely and to work with them even in a hot and wet climate.

17 cl, 15 ex, 3 tbl

 

The present invention relates to particles of bleach that contain sodium percarbonate and a bleaching activator and which have high stability (resistance) during storage.

Sodium percarbonate used in detergents and detergents as bleach. When using detergent from percarbonate sodium stands out as having a bleaching effect component hydrogen peroxide. To enhance the bleaching action at low temperatures in detergents and cleaning agents usually use the whitening systems in which sodium percarbonate is used together with a bleaching activator. As bleaching activators to this end preferably used N-acyl compounds and O-acyl compounds which contain one or several able to peligroso (exhaustive hydrolysis) connected to nitrogen or oxygen of the acyl groups in an aqueous solution of detergent react with released from percarbonate sodium by hydrogen peroxide with the formation of peroxocarbonate acid. Along with peritonism in alkaline solutions, detergents and cleaners primarily the hydrolysis occurs, which is peroxocarbonate acid produces the corresponding carboxylic acids�.

Sodium percarbonate, as well as used as the bleaching activators are N-acyl compounds and O-acyl compounds are sensitive to contact with moisture, which they decompose in the composition of detergents and cleaners. Therefore, sodium percarbonate and separately liable to peligroso bleaching activators are typically used in detergents and cleaning agents in the form of particles in the shell, which should protect it covered particles from moisture.

As sodium percarbonate and used as bleaching activators are N-acyl compounds and O-acyl compounds have significantly different densities and bulk weight, in detergents and cleaning agents containing particles of percarbonate sodium and particles of the bleaching activator may in the manufacture of detergent, as well as in packaged detergent or detergent in transit and in handling it to happen segregation of particles of percarbonate sodium and bleaching activator. Consequently, when applying detergent bleach and activator bleaching is not already present in it is necessary to activate the bleaching quantitative ratio between them. In this case, to ensure sufficient obliviouse� of the action of the bleach and activator of bleaching must be contained in a detergent or cleaning agent in a larger amount. Therefore, to avoid segregation of percarbonate sodium and bleaching activator and to prevent loss of bleaching activator in the application as a result of hydrolysis, it would be advisable to add sodium percarbonate and the bleaching activator in the detergent or cleaning agent in the form of particles, which also contain sodium percarbonate and a bleaching activator. However, when using such particles have to deal with the problem to prevent premature reaction of percarbonate sodium with a bleaching activator in the containing particle.

In US 5458801 described particles covered with a borate core percarbonate sodium and skin bleaching activator and a water-soluble organic binder. Such particles are produced by granulating covered borate particles percarbonate sodium together with powder bleaching activator and the molten binder. Granulation is carried out in a mixer-granulator with the use of the chopper. The obtained particles can be applied an additional coating of a water-soluble high-molecular substances, for example, by spraying an aqueous solution in a fluidized bed.

In WO 2007/7127641 described containing sodium percarbonate and activator whitening degranulate obtained by granulating percarbonate and sodium or�of tuatara bleaching first together with the molten binder, and then with other components.

However, a disadvantage of the known from the prior art bleach particles containing sodium percarbonate and a bleaching activator, is that due to the decomposition of percarbonate sodium or caused by the reaction of percarbonate with a bleaching activator during storage is their such a strong self-heating, which for security reasons does not allow their storage in the bunker. In addition, another drawback of such known from the prior art bleach particles is that they exhibit when storing the tendency to caking, which also limits the possibility of their storage in the bunker.

The inventors, it was found that the supply of the bleach particles having a core of percarbonate sodium and containing a bleaching activator shell, an intermediate shell of a acceptable composition allows to increase the stability of such particles during storage and because of this allows for the possibility of storage in bunkers.

The object of the invention in accordance with this are bleach particles having a core that consists mainly of percarbonate sodium, the inner shell containing the sodium sulfate in the form of thenardier or burkeite in the amount of at least 50 wt.%, and an outer shell containing a water-soluble binder and at least one bleaching activator, selected from able to peligroso N-acyl and O-acyl compounds.

The object of the invention is, in addition, detergents and cleaning agents containing such bleach particles, and a method of producing such particles of bleach, in the first stage, which is composed mainly of percarbonate sodium particles are applied containing the sodium sulfate aqueous solution by spraying with simultaneous evaporation of water and in the second stage, which formed the first stage of coated particles applied to the aqueous solution or aqueous dispersion of a water-soluble binder and particles of the bleaching activator selected from able to peligroso N-acyl and O-acyl compounds.

Proposed in the invention particles of bleach have a heart, which consists mainly of percarbonate sodium, i.e. from peritrate sodium carbonate composition 2Na2O3·3H2O2. The core of the proposed in the invention particles along with the sodium percarbonate may also contain sodium carbonate, sodium bicarbonate and their mixed salts, and may also contain small amounts of known stabilizers for peroxide compounds, for example, magnesium salts, silicates, phosphates and/or helatoobrazovateli. The relative content of percarbonate sodium in the core proposed in Fig�thenia particles of bleach in a preferred embodiment is more than 70 wt.%, especially preferably more than 85 wt.%, in terms of the mass of the core. The relative content of organic carbon compounds in the core of the proposed in the invention particles in the preferred embodiment, is less than 1 wt.%, particularly preferably less than 0.1 wt.%, in terms of the mass of the core.

In one of the preferred options core proposed in the invention particles contain small quantities of additives which stabilize the active oxygen and the share of which in the core in the preferred embodiment, representing less than 2 wt.% in terms of its mass. As such improves the stability of the active oxygen content of additives is preferable to use magnesium salts, water glass, stannate, pyrophosphates, polyphosphates, polyacrylates, and helatoobrazovateli from the group hydroxycarbonic acids, aminocarbonyl acids, aminophosphonic acids, phosphonocarboxylate acids and hydroxyphosphonic acids, and their salts with alkali metals, ammonium salts, or magnesium salts. In one particularly preferred options core proposed in the invention contains particles as stabilizing active oxygen additives are the alkali metal silicate, preferably waterglass module SiO2/Na2O in the pre�crystals from 1 to 3, in an amount of from 0.1 to 1 wt.% in terms of the mass of the core. In the most preferred embodiment, additionally, the amount of alkali metal silicate core proposed in the invention particles also contains magnesium compound in an amount which is based on the Mg2+ranges from 50 to 2000 parts./million in terms of the mass of the core. The addition of such stabilizing active oxygen additives can further reduce the power dissipation during storage as a result of decomposition of percarbonate sodium in the core.

The core of the proposed in the invention particles of bleach it is possible to form one of the known methods of obtaining percarbonate sodium. One of the methods suitable for the preparation of percarbonate sodium, is the crystallization of percarbonate sodium from aqueous solutions of hydrogen peroxide and sodium carbonate, which can be performed in the presence and in the absence vicalvaro means, for example, in accordance with the methods described in EP 0703190 and DE 2744574. Particles of percarbonate sodium obtained by this method of crystallization in the presence vicalvaro means may additionally contain minor amounts used wasalways means, for example, sodium chloride. Other suitable for the production of percarbonate sodium method assesement (narushitelei) granulation in a fluidized bed, which consists in spraying an aqueous solution of hydrogen peroxide and aqueous soda solution in a fluidized bed at the centers of granulometry from percarbonate sodium with simultaneous evaporation of water, for example in accordance with WO 95/06615. Another suitable for the production of percarbonate sodium method is a method based on the interaction of solid sodium carbonate with an aqueous solution of hydrogen peroxide, followed by drying the obtained product, for example in accordance with DE 19608000.

In one preferred options proposed in the invention particles of bleach are basically the core of percarbonate sodium, which is formed by granulating in a fluidized bed from aqueous solutions of hydrogen peroxide and sodium carbonate. Such granulation in the fluidized bed allows you to form a heart, which differs from that obtained by other methods cores of dense structure and rounded shape and more smooth surface. Proposed in the invention particles of bleach to a core obtained by granulation in the fluidized bed, have compared with the particles, the core of which was obtained by another method, additionally considerably improved storage stability and obviously less heat.

In a preferred embodiment, the heart�proposed in the invention particles has a diameter in the range from 400 to 1600 μm, particularly preferably from 500 to 800 μm. The formation of the cores proposed in the invention particles with a diameter lying within the specified limits, to prevent segregation of the particles of the bleach in the form of granules detergents and cleaning agents and provide high stability of the particles of the bleach during storage.

Proposed in the invention particles of bleach in addition to the core also have an inner shell that contains the sodium sulfate in the form of thenardier or burkeite in the amount of at least 50 wt.%, preferably at least 75 wt.%.

In one preferred variation, the inner shell contains sodium sulfate and sodium carbonate in a weight ratio between 95:5 to 75:25. In a particularly preferred embodiment, the weight ratio between sodium sulfate and sodium carbonate is from 95:5 to 80:20, most preferably from 90:10 to 80:20. The total relative content of sodium sulfate and sodium carbonate in the inner shell in a preferred embodiment is wherein at least 80 wt.%, more preferably at least 90 wt.%. Contained in the internal membrane of sodium carbonate in a preferred embodiment more than 80% is represented in the form of burkeite composition of Na4(SO4)1+n(CO3)1-nwhere n code no�denotes a number from 0 to 0.5. The proportion of burkeite compared to the others contained in the particles of the bleach phases containing sodium carbonate, can be determined by analysis of x-ray powder diffraction patterns of the particles of the bleach Rietveld method.

In one preferred variation, the inner shell further comprises sodium silicate in an amount of from 0.1 to 1 wt.%, particularly preferably from 0.2 to 0.5 wt.%. Sodium silicate in a preferred embodiment is a water-soluble sodium silicate, primarily liquid glass. The addition of sodium silicate in small quantities provides a further improvement in the stability of the proposed in the invention particles of bleach during storage.

In yet another preferred embodiment, the inner shell contains sodium sulfate in the form of high-temperature phase of sodium sulfate and/or high-temperature phase of a double salt of composition Na4(SO4)1+n(CO3)1-nwhere n denotes a number from 0 to 0.5. The presence of high-temperature phases can be determined on the basis of x-ray powder diffraction patterns of the particles of the bleach. Membranes containing the sodium sulfate in the form of high-temperature phases, can be obtained by the method described in EP 1903098.

Mass fraction of the inner shell in a preferred embodiment is from 2 to 25%, particularly preferably� from 2 to 10%, most preferably from 4 to 7%, in each case in terms of the mass of particles of bleach. The inner shell in a preferred embodiment is made so that it covers located underneath the material more than 95%, preferably more than 98%, primarily to you.

Thanks to the specified composition of the inner shell effectively prevents reaction between the sodium percarbonate from the core and the bleaching activator of the outer shell, and thus provides so little heat during storage that the proposed in the invention particles of bleach allow you to safely store them in the bunker and safely transport them and work with them in a hot and humid climate. In addition, the inner shell due to her composition is in the highest degree sensitive to mechanical loads and therefore high stability of the particles of the bleach during storage does not deteriorate when exposed to mechanical loads, for example, such as those to which they are exposed during pneumatic transport or during storage in the high bin, and also retains the property of low heat dissipation during storage.

Proposed in the invention particles of bleach in addition to the core and the inner shell also have an outer shell which contains a water soluble sweathouse at least one bleaching activator, selected from able to peligroso N-acyl and O-acyl compounds. In the preferred embodiment, the outer shell contains a bleaching activator in the form of discrete particles, the mass-average size of which is preferably 0.1 to 400 μm, particularly preferably from 1 to 200 μm. The placement of the bleaching activator in the outer shell in the form of such particles makes it possible to simultaneously achieve high resistance to hydrolysis during storage and fast transformation of the bleaching activator in percarbonate acid in the application proposed in the invention particles of bleach.

For use as bleaching activators suitable able to peligroso N-acyl and O-acyl compounds in the aquatic environment react with the hydrogen peroxide with the formation of peroxocarbonate acid. For use as bleaching activators are suitable primarily polyallylamine alkylenediamine, especially tetraacetylethylenediamine (TAED), acylated triazines derivatives, especially 1,5-diacetyl-2,4-dioxohexane-1,3,5-triazine (DADHT), the acylated glycoluril, especially tetraaceticacid (TAGU), N-acylamide, primarily N-nonavailability (CARRY), acylated phenolsulfonate, primarily n-nonanoyl - or ISO-nonanoyloxybenzenesulfonate (h-, respectively ISO-�OPS), anhydrides of carboxylic acids, such as phthalic anhydride, acylated polyhydric alcohols, such as etilenglikolevye, 2,5 diacetoxy-2,5-dihydrofuran, acylated sorbitol and mannitol and acylated sugars, such as pentaacetate, enol ethers, and N-acylated lactams, particularly N-alloplasty and N-acellularity. As a bleaching activator, it is preferable to use tetraacetylethylenediamine or sodium salt

4-nonanoyloxybenzenesulfonate acid, and most preferred bleaching activator is tetraacetylethylenediamine.

For use as a water-soluble binder for the outer casing of suitable inorganic and organic binder dissolved in water or in an alkaline solution detergent. Preferred binder systems, even during prolonged storage does not react with the bleaching activator or released from the core by hydrogen peroxide.

To preferred inorganic binders include water-soluble alkali metal silicates, particularly preferred among them called liquid glass water-soluble sodium silicates, most preferably water glass with a modulus in the range from 1.8 to 2.5.

To preferred organic touch�slip include vinyl polymers with carboxyl groups, first of all, polymers of acrylic acid and methacrylic acid and copolymers of acrylic acid with methacrylic acid, acrolein or containing vinyl sulfonic acid monomers, and their salts with alkali metals, especially sodium salt, to salt with alkali metal carboxylic groups can be converted completely or partially. Such preferred binders may, if the application of the proposed in the invention particles of bleach in a detergent or cleaning agent additionally perform the function of active or modifying sodabot.

Along with the above as a binder can also be used other water-soluble polymers such as polyvinyl alcohols and polyvinylpyrrolidone.

Proposed in the invention particles of bleach in a preferred embodiment contain a bleaching activator and a binder in a weight ratio between the first and second in the range from 20:1 to 1:1, particularly preferably from 10:1 to 4:1.

Proposed in the invention particles of bleach in a preferred embodiment contain sodium percarbonate and a bleaching activator in a weight ratio between the second and the first in the range from 1:1 to 1:9, particularly preferably from 1:3 to 1:5. The use of these components in such a mass ratio between them allows the use of detergent �Lee cleaners containing proposed in the invention particles of bleach, to achieve high yield percarbonate acid and thereby to achieve good bleaching action in terms of the amount of percarbonate sodium and bleaching activator.

In addition to the inner and outer shells of the proposed in the invention particles of bleach can have another one - or multi-layer shell, which can be located between the core and the inner sheath, and between the inner and outer shells or on top of the proposed in the invention the shell. The inner liner is preferably applied directly onto the core mainly from percarbonate sodium, and the outer shell is directly on the inner shell.

Between the shells and between the inner shell and the core may be a clear boundary, which abruptly changes the chemical composition. Usually, however, between the individual membranes, and between the inner shell and the core is formed by a transition zone, which contains components of both the bordering membranes, respectively layers. Such transition zones are formed, for example, when applying the next shell from the aqueous solution, when at the beginning of the formation of a layer of the shell pripoverkhnostnye� part of the layer located underneath the shell dissolves with formation as a result of the transition zone, contains components of both membranes. Thus in a preferred embodiment in which the inner shell is directly on the core, mainly from percarbonate sodium, between the core and the inner sheath may be formed an intermediate or transition layer containing sodium sulfate, sodium carbonate, sodium bicarbonate and sodium percarbonate, as well as mixed salts of these components.

In one preferred options proposed in the invention particles of bleach are located on top of the outer casing additional casing which contains the sodium sulfate in the form of thenardier or burkeite in the amount of at least 50 wt.%, preferably at least 75 wt.%. The mass fraction of this additional shell in the preferred embodiment, there are from 2 to 25%, especially preferably from 2 to 10% based on the mass of particles of bleach. Particles of bleach with such additional shell does not show any tendency or show only a small tendency to caking under compressive loads and therefore allow you to securely store them in the hopper without the danger of caking in it. In addition, additional shell improves the stability of the bleach particles in the composition of the detergent and helps prevent loss of bleaching�th steps when storing detergent, containing such particles of bleach.

In the following embodiment, the particles of the bleach can be located on top of the outer shell additional membrane, which, as a main component contains an alkali metal silicate with (siliceous) module SiO2to alkali metal oxide in excess of 2.5. As the main component of this additional shell contains an alkali metal silicate, if it contains no other part in the relative mass excess of the proportion of alkali metal silicate. The module of the alkali metal silicate in a preferred embodiment is 3 to 5, particularly preferably from 3.2 to 4.2. The share of such additional membranes in the proposed in the invention particles of bleach in a preferred embodiment there are from 0.2 to 3 wt.%. The relative content of alkali metal silicate in the additional material of the shell in a preferred embodiment comprises more than 50 wt.%, especially preferably more than 80 wt.%. As the alkali metal silicate in the composition of the additional sheath is preferable to use sodium silicate, particularly preferably sodium water glass. Proposed in the invention particles of bleach with extra shell, soderjasim as a main component an alkali metal silicate with a module of Si02 to alkali metal oxide of more than 2.5, additionally characterized by slow dissolution in water and improved storage stability in a liquid or gel-like media containing water in an amount up to 15 wt.%. Therefore, such particles are preferably used for the manufacture of liquid or gel detergents or cleaning agents.

In yet another embodiment, the bleach particles can further comprise on its surface a finely dispersed oxide of silicon, aluminum or titanium or a mixed oxide of these elements in an amount of from 0.01 to 1 wt.%, preferably from 0.1 to 0.5 wt.%. As an example, suitable for use in these purposes of highly dispersed oxides can be called pyrogenic oxides produced by flame hydrolysis of volatile compounds of silicon, aluminum or titanium or mixtures of these compounds. Primary particles obtained by pyrogenic oxides or mixed oxides in a preferred embodiment have an average size less than 50 nm and can be aggregated into larger particles, the average size of which in the preferred embodiment, is less than 20 microns. Similarly, you can use the deposited oxides, precipitated from aqueous solutions of compounds of silicon, aluminum or titanium or mixtures of these compounds. Precipitated oxides, sootvetstvenno� mixed oxides along with silicon, aluminum and/or titanium may also contain small amounts of ions of alkali or alkaline earth metals. The average particle size of the precipitated oxides in the preferred embodiment, is less than 50 μm, particularly preferably less than 20 microns. The specific surface of highly dispersed oxides, determined by the method of brunauer-Emmett-teller by nitrogen adsorption (BET-method), in a preferred embodiment ranges from 100 to 300 m2/g. the preferred embodiment proposed in the invention, the bleach particles contain on their surface gidrofobizirovannym finely dispersed oxide, particularly preferably gidrofobizirovannogo pyrogenic or precipitated silicic acid. Under gidrofobizirovannym oxides according to the invention refers to oxides having on its surface associated with chemical bonds of organic residues and are not wetted by water. Hydrophobic oxides can be obtained, for example, the interaction of pyrogenic or precipitated oxides with organosilane, silazane or polysiloxane. Suitable for the production of hydrophobized oxides of silicon compounds described in EP 0722992 (p. 3, line 9, to page 6, line 6). Particularly preferred hydrophobic oxides, obtained by the interaction of highly dispersed oxide with a silicon compound belonging to prevedeni� in EP 0722992 classes of compounds (a) to(e) and (k) to(m). The wettability of hydrophobic fumed oxides with methanol should preferably be at least 40. Proposed in the invention particles of bleach, further comprising on its surface a finely dispersed oxide, exhibit even less prone to caking during storage, particularly when stored in conditions where they are subjected to compressive loads, and therefore more suitable for storage in silos. In addition, such particles have higher storage stability in the composition of detergents and cleaners.

In a preferred embodiment the core of the proposed in the invention particles of bleach is mostly spherical in shape with a smooth surface of the partition between her and placed over the inner sheath. The average roughness Rathe interface between the core and the inner sheath in a preferred embodiment is less than 5 μm according to its definition by using scanning electron microscope images with compositional contrast for portions of a surface section of a length of 100 μm on the cutting surfaces of the particles.

The inner shell in a preferred embodiment has a uniform thickness of the layer, which has more than 90% of the shell differs from the average thickness �e layer is less than 50%.

Proposed in the invention particles of bleach unexpectedly exhibit high storage stability despite the fact that in one and the same particle at the same time contains sodium percarbonate and is able to peligroso bleaching activator which can react with each other with a lot of heat. Heat generation proposed in the invention particles of bleach, which is determined by measurement with an instrument THERE. "Thermal Activity Monitor") of the company Thermometric AB, Jarfalla (SE), after storage for 48 h at 40°C is predominantly less than 15 µw/g, particularly preferably less than 10 µw/g After storage for 48 h at 50°C the dissipation is mostly less than 30 µw/g, particularly preferably less than 12 μw/g. High storage stability and low heat generation allows you to store proposed in the invention particles of bleach in large bins without the danger of self-accelerating decomposition stored in the hopper of material. Due to such properties of the bleach particles is ensured, moreover, the possibility of reliable transportation and reliable handling with complex conditions in hot and humid regions.

Another object of the present invention is a detergent or cleaning agent, containing proposed in the ISO�the acquisition of the bleach particles. In the preferred embodiment, this Laundry detergent is a detergent for the washing of textiles, additional bleach for washing tools or means for washing dishes, designed for mechanical dishwashing, particularly preferably a washing agent for the washing of textiles. In the preferred embodiment proposed in the invention, the detergent or cleaning agent contains the proposed in the invention particles of bleach in an amount of from 1 to 50 wt.% in terms of all the amount of detergent.

Proposed in the invention, the detergent or cleaning agent can be provided in solid form and in this case, along with the proposed in the invention particles contain bleach and other components in the form of powders or granulates. In addition, detergent or cleaning agent may also constitute or contain extruded moulded products, component which may be proposed in the invention particles of bleach. Such extruded molded products in the form of extrudates, pellets, briquettes or tablets can be obtained in various ways briquetting, particularly by extrusion, extrusion, extrusions, firmware, seals on rolls or tableting. DL� briquetting in the composition proposed in the invention, the detergent optionally include a binder, giving the briquetting molded products with superior durability. In cases where the proposed in the invention, the detergent or cleaning agent constitutes or contains extruded moulded products, but contains no additional binders, it is preferable that its function during briquetting or extrusion molded products was performed with one of the cleaning action of the components, for example, nonionic surface-active agent (surfactant).

Proposed in the invention, the detergent or cleaning agent can also be presented in liquid or gel form and may contain proposed in the invention particles of bleach dispergirovannykh in liquid, respectively gel phase. Along with the proposed in the invention particles of liquid bleach in, respectively, the gel phase can be dispersed and other particles. Liquid, gel respectively phase preferably should have rheological properties such that dispersed particles in it remained in suspended form and not precipitated during storage. Therefore, the liquid phase preferably should have such a composition that provides its thixotropic or pseudoplastic rheological properties. To give such rheological properties of liquid mousemail detergent in its composition as additives can be used suspendresume auxiliary substances, such as swelling clays, particularly montmorillonite, precipitated and pyrogenic silicic acid, resin plant, primarily xantana, or polymeric gelling agents, such as vinyl polymers with carboxyl groups.

Proposed in the invention, the detergent or cleaning agent provided in liquid or gel form, in a preferred embodiment contains the proposed in the invention particles of bleach with extra shell, containing as its main component an alkali metal silicate with a modulus SiO2to alkali metal oxide in excess of 2.5. In this embodiment, the detergent or cleaning agent may contain water in an amount up to 15 wt.% without danger of dissolving the surface layer of the particles of the bleach during storage and the resulting allocation of hydrogen peroxide in liquid, gel phase, respectively.

Along with the proposed in the invention particles of bleach proposed in the invention, the detergent or cleaning agent may contain other components, e.g., surfactants, active or builders, alkaline components, enzymes, chelating complexing agents (helatoobrazovateli) inhibitors turning grey (darkening), defoamers, optical brighteners, perfumes and dyes.

As surface�of active substances in the proposed in the invention, the detergent or cleaning agent can be used mainly anionic, nonionic and cationic surfactants.

It is suitable for use in the proposed in the invention, the detergent or detergent anionic surfactants include, for example, surfactants with sulfonate groups, preferably an alkylbenzene sulfonates, alkanesulfonyl, α-reincorporate, fatty esters of α-sulfonic acids or sulfosuccinates. Among the preferred alkylbenzene sulfonates with any linear or branched alkyl group with 8-20 carbon atoms, especially from 10 to 16 carbon atoms. To preferred alkanesulfonyl are those with straight alkyl chains with 12 to 18 carbon atoms. From among α-reincorporates it is preferable to use the products of sulfonation of α-olefins with 12 to 18 carbon atoms. From among esters of fatty α-sulfonic acids are preferred products of sulfonation of fatty acid esters derived from fatty acids with 12-18 carbon atoms and short-chain alcohols with 1-3 carbon atoms. As anionic surfactants suitable surfactants with sulfate group in the molecule, preferably alkylsulfate and esterified sulfate. For your preferred alkylsulfates include those with linear alkyl residues with 12-18 carbon atoms. In addition to these are also suitable β-branched alkylsulfate and one or novosemide�haunted by alkyl at the center of the longest alkyl chain alkylsulfate. To preferred esterified to the sulfates are sulfates of alkyl esters obtained by ethoxycarbonyl linear alcohols with 12-18 carbon atoms 2-6 ethylenoxide links and subsequent sulfation. As anionic surfactants can also be used soap, such as, for example, formed with alkali metal salts of lauric acid, myristic acid, palmitic acid, stearic acid and/or mixtures of natural fatty acids, such, in particular, fatty acids of coconut oil, palm kernel oil or tallow oil.

As nonionic surfactants can be used, for example, alkoxysilane, especially ethoxylated and propoxycarbonyl, connection. Most suitable condensation products of ALKYLPHENOLS or fatty alcohols with 1 to 50 moles, preferably 1-10 moles, of ethylene oxide and/or propylene oxide. Equally suitable fatty amides polyhydroxyether in which the amide nitrogen atom linked organic residue with one or more hydroxyl groups, which can be also alkoxysilane. As nonionic surfactants can also be used Alkylglucoside with a linear or branched alkyl group with 8-22 carbon atoms, especially from 12 to 18 carbon atoms, and mono - or diglycoside residue, preferably pre�component is a derivative of glucose.

It is suitable for use in the proposed in the invention, the detergent or detergent cationic surfactants include, for example, mono - and dialkoxybenzene Quaternary amine linked to nitrogen (C6-C18alkyl residue and one or two hydroxyalkyl groups.

Proposed in the invention, the detergent or cleaning agent usually also contains active or modifying additives, which are capable of when using them to bind dissolved in water ions of calcium and magnesium. To such active or modifying additives include phosphates and polyphosphates of alkali metals, especially pentanedithiol, soluble and water-insoluble sodium silicates, especially layered silicates of the formula Na5Si2O5, zeolite type A, X and/or P, and trisodium citrate. In addition to the above additives can be used, in addition, active or modifying organic adamaki, such as polyacrylic acid, poliasparaginovaya acid and/or copolymers of acrylic acid with methacrylic acid, acrolein or containing sulfonic acid vinyl monomers and their salts with alkaline metals.

The composition proposed in the invention of the washing or cleaning agents commonly include alkaline components in their target approx�nenii provide creation in an aqueous solution of a detergent or cleaning agent is an alkaline environment with a pH value ranging from 8 to 12. For applications such as alkaline components suitable primarily sodium carbonate, sesquicarbonate sodium, metasilicate sodium and other soluble alkali metal silicates.

The composition proposed in the invention, the detergent may further include enzymes that enhance the cleaning, respectively the cleaning action, especially lipase, cutinase, amylases, neutral and alkaline protease, esterase, cellulase, mannanase, pectinases, lactase, perhydrol and/or peroxidase. Such enzymes with the aim of protecting them from decay can be adsorbed on carriers or encapsulated in forming the shell material.

Proposed in the invention, the detergent or cleaning agent may contain, in addition, helatoobrazovateli, which form coordination compounds with transition metals and to prevent catalytic decomposition of active oxygen compounds in an aqueous solution of detergent. As such helatoobrazovateli can be used, for example, phosphonates, such as hydroxyethane-1,1-diphosphonate, nitrilotriethanol, diethylenetriaminepenta(methylenephosphonate), ethylenediaminetetra(methylenephosphonate), hexamethylenediaminetetra-(methylenephosphonic) and their salts with alkaline metals. Equally as chelation�of asuvatele you can also use nitrilotriethanol acid, and polyamino acid, first of all

ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, Ethylenediamine-N,N'-centernow acid, methylpyridoxine acid, polyaspartate, as well as their salts with alkali metals and ammonium salts. As helatoobrazovateli in the composition proposed in the invention of the washing or cleaning agents can further include polyhydric carboxylic acids, especially hydroxycarbonate acids, primarily tartaric acid and citric acid.

Proposed in the invention, the detergent or cleaning agent in the embodiment in which it is a detergent for textiles, may further contain inhibitors turning grey (antiresonance) holding suspended in the form separated from purified fibers of pollution and thus preventing their re-deposition or deposition on them. As an example, suitable for use in the proposed in the invention, the detergent or detergent inhibitors turning grey can be called ethers of cellulose, in particular carboxymethyl cellulose and its salts with alkali metals, methylcellulose, hydroxyethyl cellulose and hydroxypropyl cellulose. Similarly you can use and polyvinylpyrrolidone.

Proposed in the invention, the detergent or cleaning agent can contain Yes�her defoamers, suppress the formation of foam. As an example, suitable for use in the proposed in the invention, the detergent or cleaner of defoamers can be called organopolysiloxane, such as polydimethylsiloxane, paraffins and/or waxes and mixtures thereof with finely dispersed silicic acids.

The composition proposed in the invention, the detergent in the embodiment in which it is a detergent for textiles, you can optionally include optical brighteners deposited on the fibers that absorb the radiation of the UV range and emit blue fluorescence that counteracts the yellowing of the fibers. As an example, suitable for use in the proposed in the invention, the detergent or detergent optical brighteners can be called derivative diaminodiphenylsulfone, such as those formed with alkali metal salts of 4,4'-bis-(2-anilino-4-morpholino-1,3,5-triazinyl-6-amino)stilbene-2,2'-disulfonate, or substituted definitiely, such as those formed with alkali metal salts of 4,4'-bis-(2-colfosceril)biphenyl.

Proposed in the invention, the detergent or cleaning agent can also contain perfumes and dyes.

Proposed in the invention, the detergent or cleaning agent in liquid form or in the form of a gel complement�flax may contain up to 30 wt.% organic solvents, such as, for example, methanol, ethanol, n-propanol, isopropanol, n-butanol, ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,4-butyleneglycol, glycerin, diethylene glycol, methyl ether of ethylene glycol, ethanolamine, diethanolamine and/or triethanolamine.

Compared to detergents and cleaners which is proposed in the invention particles contain bleach known in the art containing sodium percarbonate and a bleaching activator particles of bleach, proposed in the invention, the detergent or cleaning agent has a better storage stability at lower losses of active oxygen and with less loss of bleaching action during storage in humid conditions.

Proposed in the invention particles of bleach can be obtained proposed in the invention method, covering at least two stages. In the first stage of the proposed in the invention method contain a sodium sulfate aqueous solution is spray-applied on consisting mainly of percarbonate sodium particle with simultaneous evaporation of water. In the second stage of the proposed in the invention method then on the formed at its first stage, the coated particles applied to the aqueous solution or aqueous dispersion of a water-soluble binder and particles of the bleaching activator selected from �utility to peligroso N-acyl and O-acyl compounds. Through the use of an aqueous solution or aqueous dispersion of the binder results in a more homogeneous compared with the use of a molten binder, the thickness of the outer shell and prevents the agglomeration of particles of a bleach, which allows us to obtain them with a narrower size distribution.

In the first stage of the proposed in the invention method by heat applied during the spraying process containing the sodium sulfate aqueous solution, is already largely evaporates the most part, especially more than 90%, water present in it, and therefore when applied to the inner shell dissolves only a small surface portion of the core, which as a result, during spraying of the specified solution forms a solid shell. Inner shell to the core is preferably applied by spraying containing the sodium sulfate aqueous solution in a fluidized bed, most preferably as described in EP 0970917 way that, when used in small quantities forming the shell material allows to obtain a dense shell. During application of the inner shell in a fluidized bed it is preferable to apply a drying gas, creating a fluidized bed temperature in the range from 30 to 90°C, �predpochtitelno from 45 to 70°C. As the drying gas used in a preferred embodiment the heated air or mixture of air and gaseous combustion products, which in the preferred embodiment, the gaseous products of combustion resulting from the combustion of natural gas in the presence of air. The dust entrained by the drying gas during the deposition of the inner shell in a fluidized bed, in a preferred embodiment used for the preparation containing the sodium sulfate aqueous solution used for coating the inner shell.

In the second stage of the proposed in the invention method, the aqueous solution or aqueous dispersion of the binder and the particles of the bleaching activator can be simultaneously or sequentially applied to the obtained in the first stage and coated particles. The aqueous solution or aqueous dispersion of the binder and the particles of the bleaching activator can be applied separately from each other. However, the particles of the bleaching activator may also be used in the composition of the aqueous solution or aqueous dispersion of the binder suspended in this solution or in dispersion form.

In a preferred embodiment the second stage of the proposed in the invention method is carried out in a fluidized bed with simultaneous evaporation of water. The aqueous solution or aqueous dispersion of the binder�about it is preferable to inject the spray nozzle, particularly preferably two - or multi-component nozzle using air as the atomizing gas, formed in the obtained in the first stage, the coated particles of the fluidized bed, which is fed into the drying gas and the temperature of which is thereby set at a value ranging from 30 to 90°C, preferably from 45 to 70°C. the particles of the bleaching activator can be submitted in the form of a dry powder directly into the fluidized bed or feeding in powder form in a multicomponent nozzle used for spraying the aqueous solution or aqueous dispersion of the binder. In another embodiment, the particles of the bleaching activator directly before spraying an aqueous solution or aqueous dispersion of the binder suspended in this solution or dispersion, in a preferred embodiment the resulting suspension before it is supplied to the spray nozzle is passed through a disperser in which the suspension is applied, the shear force generated between the rotor and the stator. As an example, suitable for use in these purposes of dispersants can be called in-line dispersing agents (dispersants continuous) design series Ultra-Turrax®and Dispax®manufactured by IKA. The parameters of the dispersant and its work preferably� must be such as when it promotes the destruction or fragmentation present in the slurry of agglomerates having a diameter more than one-third greater than the minimum pipe size used in the multi-component nozzle. When feeding the slurry through the Central channel of the multi-component nozzle specified minimum pipe size to meet the minimum diameter of the Central channel. When applying the slurry through the annular channel of the multi-component nozzle specified the minimum size of the channel corresponds to the minimum width of the annular gap forming this annular channel.

In one of the preferred options upon completion of the second stage to another stage on the formed in the second stage, film coated particle spray containing the sodium sulfate aqueous solution with simultaneous evaporation of water. This is another stage in addition to the inner and outer shells are further envelope containing the sodium sulfate. Such another stage is preferably carried out in a fluidized bed, in which it is most preferable to establish working conditions similar to those described above for the first stage, except for the application of dust entrained by the drying gas.

In one of preferred embodiments proposed in the invention method part�s bleach after the application of the outer shell in the second stage of this method is subjected to drying at a temperature in the range of from 60 to 95°C, preferably from 70 to 90°C, preferably for at least 2 minutes, particularly preferably for 4-20 min. In the variant with application of additional shell upon completion of the second stage drying is preferably carried out after the application of this additional shell.

Below the invention is illustrated by examples, which, however, does not limit its scope.

Examples

The following examples 1-13 were used sodium percarbonate coated, which accounted for 7 wt.% and which were applied to obtained by granulating in a fluidized bed sodium percarbonate, spraying in a fluidized bed an aqueous solution containing sodium sulfate in the amount 23,0 wt.% and sodium carbonate in the amount of 3.4 wt.%. Used coated sodium percarbonate was the content of active oxygen (AK) of 13.2%, the corresponding content of percarbonate sodium at 86.4 wt.%, bulk density of 1120 g/l, the mass-average particle size of 820 μm, the width of the particle distribution

size, calculated as (d90-d10)/d50, 0.82 and the dissipation in the experience with the device THERE of 2.3 μw/g after storage for 48 h at 40°C.

Example 1

In the experiment used the device for coating in the fluidized bed model Mycrolab company OYSTAR Hiittlin, which was equipped with a 1-liter collection�ICOM product and bottom-mounted three-component nozzle and which worked with the vacuum in a fluidized bed using air as the fluidizing gas, which gave a flow rate of 35 m3/h under normal conditions and the temperature of which was 80°C.

The binder used sodium polyacrylate with an average molecular weight of 1900 g/mol in the form of a 45% strength by weight aqueous solution. As a bleaching activator used TAED company wfk extension, which was ground in a mortar and from which by sieving through a sieve with a mesh size of 200 microns was separated large particles.

In a heated device for coating in the fluidized bed was loaded with 400 g coated percarbonate sodium and the fluidized bed was heated to a temperature of 45°C. Then, in the fluidized bed via a three-component nozzle was spraying a binder solution with a flow rate of 3.75 g/min and the injection pressure of 0.8 bar, the temperature in the fluidized bed was set at 55°C, and in the fluidized bed with 5-minute intervals filed 5 servings absorbed in his TED in the form of a powder with a mass of 20 g. After adding the last portion of TAED and spraying a total of 100 g of the binder solution through the same spray nozzle sprayed with 50 g of sodium sulfate in the form of a 25% by weight aqueous solution with a flow rate of 6 g/min, the temperature in the fluidized bed was set at 45°C. thereafter, the product is still within 5 min was dried in the apparatus for Nan�in termination coatings in a fluidized bed, the temperature at which it was increased to 65°C, and then the product within 1 h was dried in a drying Cabinet at 80°C.

Thus obtained particles of bleach had a content of active oxygen of 10.0%, the corresponding content of percarbonate sodium of 65.4 wt.%, the content of TAED of 12.1 wt.%, a bulk density of 880 g/l, the mass-average particle size of 940 μm, the width of the distribution of particle size of 0.84 and heat generation in the experiment with the device THERE of 5.3 μw/g after storage for 48 h at 40°C.

Examples 2-4

TED AC white company Clariant was ground in a laboratory mill model a10 firm Ika portions of 40 g each time for 30 s. Next, in a food processor model K3000, type 3210, of the firm of Braun, equipped capacity (Cup) of high quality steel and kneading working body, was loaded with 400 g coated percarbonate sodium and then, when the maximum rotational speed was added dropwise a binder shown in table 1 quantities and was simultaneously added 200 g of crushed TOAD portions of 20 g. Upon completion of such an addition was stirred for 2 min, then the mixture was suction was applied to the device for coating in the fluidized bed model Mycrolab company OYSTAR Huttlin, which was equipped with a 1-liter collection product and bottom-mounted two-component nozzle is described in DE 3806537 A1 design and Kotor�e you worked with negative pressure in a fluidized bed using air as the fluidizing gas, which gave a flow rate of 35 m3/h under normal conditions and the temperature of which was 80°C. Immediately after the temperature rise in a fluidized bed to 60°C in a fluidized bed at the temperature of 60°C was sprayed with 250 g of 25% strength by weight aqueous solution of sodium sulfate with the consumption of 6 g/min product even for 5 min and dried in a fluidized bed where the temperature was increased to 75°C, and then the product within 1 h was dried in a drying oven at 85°C.

Results of data analysis on the content of active oxygen and TAED, data on dissipation in the experience with the device THERE after storage for 48 h at 40°C, respectively 50°C and the time information of dissolution in water are shown in table 1. To determine the time of dissolving 2.5 g of particles of percarbonate sodium was dissolved in 1 l of water at 20°C in a thermostated measuring cell made of glass (diameter 130 mm, height 150 mm) under stirring with a magnetic stirrer. The speed of rotation of the agitator is chosen such that the fluid vortex formed crater with a depth of 4 cm In the process of dissolution measured the change of electrical conductivity of the solution. The time of dissolution corresponds to the time for which the amount of electric conductivity reaches 90% of its final value.

Example 5

In this case, repeated application� 2 except after spraying the solution of sodium sulfate before and subsequent drying in a fluidized bed using the same nozzle with the same flow rate sprayed 34 g of 10% by mass aqueous solution of sodium silicate with a modulus of 3.3.

Table 1
ExampleBinderThe content of AA in wt.%The content of TAED in wt.%The dissipation in the experience with the device THERE after storage at 40°C in μw/gThe dissipation in the experience with the device THERE after storage at 50°C in μw/gThe time of dissolution in min
260 g Acusol*8,424,61,84,4103
360 g Acusol*+20 g of liquid glass**7,824,11,95,9120
468 g of liquid glass**8,6 23,18,527,879
560 g Acusol*8,226,01,54,3174
Note:
*Acusol™ 445 N (sodium polyacrylate with a Mw 4500 g/mol), 45% by weight aqueous solution;
**36% by weight aqueous solution of sodium silicate, modulus of 3.3.

Examples 6-10

400 g of TAED AC white company Clariant within 30-45 with crushed in food processor model K, type 3210, of the firm of Braun, equipped with a universal plastic capacity (Cup) and a knife, when the maximum rotational speed. From the crushed material by sieving, sifting machine model Jelxix 50 firms with Retsch sieve with a mesh size of 400 μm was separated particles larger than 400 μm. Later in the same food processor, equipped capacity (Cup) of high quality steel and kneading working body, loaded coated sodium percarbonate in shown in table 2 quantities. The product Acusol specified in table 2 amounts were diluted with water in the same quantities and 10 g of a dilute solution R�spirali within 10 s at maximum speed. Then slowly dosed out portion of crushed TED in accordance with the specified in table 2, the ratio between it and the product Acusol stage and repeated spraying of a solution of the product Acusol and dosing of TAD before applying just the amount of binder and TIED. Then stirred for 2 min at maximum speed, after which the material obtained by sieving through a sieve with a mesh size of 1600 μm was separated agglomerates. On the sifted material is similar to examples 2-4 was applied an additional coating of sodium sulfate in shown in table 2 amounts.

Results of data analysis on the content of active oxygen and TAED, data on dissipation in the experience with the device THERE after storage for 48 h at 40°C, respectively 50°C and the time information of dissolution in water are shown in table 2.

Table 2
ExampleNaPC in gTED in gAcusol* gNa2SO4in gThe content of AA in wt.%The content of TAED in wt.%The dissipation in the experience with the device THERE after storage at 4°C in μw/g The dissipation in the experience with the device THERE after storage at 50°C in μw/gThe time of dissolution in min
645045077905,937,01,03,246
79004501201578,625,53,09,955
8996332100150n. d.n. d.n. d.7,6n. d.
91080270721579,7n. d.1,74,6 55
101665335302129,815,73,66,459
Note:
"NaPC" stands for "sodium percarbonate";
*Acusol™ 445 N (sodium polyacrylate with a Mw 4500 g/mol), 45% by weight solution in water;
"B. O." means "not determined".

Examples 11 and 12

In examples 11 and 12 was repeated example 9 except that in example 11 do not cause an additional shell of sodium sulfate as in example 12 after the application of additional shells are not carried out followed by drying in a fluidized bed and in a drying Cabinet.

Obtained in example 11 the product showed the dissipation in the experience with the device THERE is 12.3 mW/g after storage for 48 h at 40°C.

Obtained in example 12, the product showed the dissipation in the experience with the device THERE is a 5.5 mW/g after storage for 48 h at 40°C.

Example 13

TED was ground and sieved analogously to examples 6-12. In a mixer with jointers blades model M5R company Lodige zag�uzhali 1125 g coated percarbonate sodium. Further, when the rotational speed of a stirring body 190 rpm analogously to examples 6-10 were applied to 82 g of the product Acusol™ 445 N, diluted in the same amount of water and 375 g of crushed TOAD and stirred for a further 2 min at the same speed. From the material obtained by sieving through a sieve with a mesh size of 1600 μm was separated agglomerates. On the sifted material is similar to examples 2-4 was applied an additional shell of 166 g of sodium sulfate.

Results of data analysis on the content of active oxygen and TAED and data on the dissipation in the experience with the device THERE after storage for 48 h at 50°C are shown in table 3.

Example 14 (does not correspond to the invention)

In this case repeated the example 13 except that used 1600 g obtained similarly by granulation in a fluidized bed of percarbonate sodium without shell from sodium sulfate and sodium carbonate, in a mixer with jointers blades struck the shell of 400 g of TAED and 100 g of the product Acusol™ 445 N and then struck an additional shell of 222 g of sodium sulfate. Results of data analysis on the content of active oxygen and TAED and data on the dissipation in the experience with the device THERE after storage for 48 h at 50°C are shown in table 3.

Example 15

In this case, p�tarali example 13 except he used sodium percarbonate, which is a shell of sodium sulfate and sodium carbonate had shell of sodium sulfate, which accounted for 7 wt.% (in terms of the mass is covered with a single shield percarbonate sodium) in a mixer with jointers blades struck the shell of 375 g of TAED and 134 g of the product Acusol™ 445 N and then struck an additional shell of 1666 g of sodium sulfate. Results of data analysis on the content of active oxygen and TAED and data on the dissipation in the experience with the device THERE after storage for 48 h at 50°C are shown in table 3.

Table 3
ExampleThe content of AA in wt.%The content of TAED in wt.%The dissipation in the experience with the device THERE after storage at 50°C in μw/g
139,020,16,6
14*10,7The 13.398
158,820,89,3
Note:
*does not correspond to the invention.

1. The bleach particle having
a) a core containing more than 70 wt.% percarbonate sodium,
b) an inner shell containing the sodium sulfate in the form of thenardier or burkeite in the amount of at least 50 wt.%, and
b) an outer shell containing a water-soluble binder and at least one bleaching activator selected from able to peligroso N-acyl and O-acyl compounds.

2. The bleach particle according to claim 1, characterized in that the core is a particle of percarbonate sodium, obtained by granulation in a fluidized bed.

3. The bleach particle of claim 1 or 2, characterized in that the core has a diameter in the range from 400 to 1600 μm.

4. The bleach particle of claim 1 or 2, characterized in that the inner shell contains sodium sulfate and sodium carbonate in a mass ratio ranging from 95:5 to 75:25, and the proportion of sodium sulfate and sodium carbonate in the shell accounts for at least 80 wt.%.

5. The bleach particle of claim 1 or 2, characterized in that the mass fraction of the inner shell have from 2 to 25%, preferably from 2 to 10% based on the mass of particles of bleach.

6. The bleach particle of claim 1 or 2, characterized in that the outer�the first shell contains a bleaching activator in the form of particles with an average size in the range from 0.1 to 400 microns.

7. The bleach particle of claim 1 or 2, characterized in that the bleaching activator is tetraacetylethylenediamine or the sodium salt of 4-nonanoyloxybenzenesulfonate acid.

8. The bleach particle of claim 1 or 2, characterized in that the binder is a water-soluble silicate is an alkali metal or vinyl polymer with carboxyl groups.

9. The bleach particle of claim 1 or 2, characterized in that the weight ratio between the bleaching activator and sodium percarbonate is from 1:1 to 1:9, preferably from 1:3 to 1:5.

10. The bleach particle of claim 1 or 2, characterized in that the weight ratio between the bleaching activator and the binder is from 20:1 to 1:1.

11. The bleach particle of claim 1 or 2, characterized in that it is located on top of the outer casing additional casing which contains the sodium sulfate in the form of thenardier or burkeite in the amount of at least 50 wt.%.

12. The bleach particle according to claim 11, characterized in that the mass proportion of the extra skins have from 2 to 25%, preferably from 2 to 10% based on the mass of particles of bleach.

13. Detergent or cleaning agent containing bleach particles according to one of claims.1-12.

14. The method of producing bleach particles according to claim 1, consisting in the fact that
a) comprising�s mainly from percarbonate sodium particles are applied containing the sodium sulfate aqueous solution by spraying with simultaneous evaporation of water and
b) formed in step a) coated particles applied to the aqueous solution or aqueous dispersion of a water-soluble binder and particles of the bleaching activator selected from able to peligroso N-acyl and O-acyl compounds.

15. A method according to claim 14, characterized in that stage b) is carried out in a fluidized bed with simultaneous evaporation of water.

16. A method according to claim 14 or 15, characterized in that on one stage to another) formed in stage b) coated particles are applied by spraying containing the sodium sulfate aqueous solution with simultaneous evaporation of water.

17. A method according to claim 14 or 15, characterized in that after application of the outer shell at the stage b) is carried out by drying at a temperature in the range of from 60 to 95°C.



 

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16 cl, 2 tbl, 4 ex

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1 ex

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7 cl, 3 tbl, 11 ex

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11 cl, 2 tbl

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10 cl, 1 dwg, 2 tbl, 2 ex

FIELD: cleaning means.

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14 cl, 3 ex

FIELD: producing detergent compositions.

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9 cl, 2 tbl, 3 ex

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Washing tool // 2028837

FIELD: chemistry.

SUBSTANCE: invention relates to bleaching compositions in the form of sacks with several compartments. Described is a sack with several compartments, containing the first compartment and the second compartment, with the first compartment containing a solid composition, and the solid composition contains a source of an oxygen bleaching agent, a bleaching activator, a polycarboxylate polymer, representing a copolymer of maleic acid/acrylic acid, and the second compartment containing a liquid composition, and the liquid composition contains a low molecular solvent, with the sack material being made in the form of a water-soluble film.

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17 cl, 2 tbl

FIELD: personal use articles.

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7 cl, 6 tbl, 3 ex

Container // 2511399

FIELD: packing industry.

SUBSTANCE: invention relates to containers. It describes a container including detergent composition, first water-permeable guard wall, and second guard wall containing additional bleaching catalyst and base material containing a polymer material, and the second guard wall is made in the form of a film of 0.10-1.0 mm thickness, where bleaching catalyst comprises 0.001% to 10.00% of the second guard wall, and base material containing a polymer material comprises the rest of composition, and the film is made by extrusion or casting/ solvent casting. Application of container is described as well.

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12 cl, 6 ex

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SUBSTANCE: multi-compartment pouch having a water-soluble film and having at least a first and a second compartment, wherein each compartment contains a composition, suitable for use in laundry, containing a surfactant, wherein the second compartment contains a whitening agent that exhibits a tinting efficiency of at least 5 and a wash removal value in the range 30% to 95%, wherein the compositions in the first and second compartments are liquid compositions and the whitening agent contains: at least one chromophore component containing thiophene dye and a thiazole dye, and at least one polymer component.

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8 cl, tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a bleaching agent based on granular sodium percarbonate, coated with a stabilising coat. The stabilising coat contains sodium sulphate, sodium carbonate, sodium silicate and additionally a photocatalyst based on an aluminium complex of sulphonated tetrabenzotetraazoporphines and a water-soluble optical bleaching agent, in wt %: sodium sulphate - 50.0-99.5, sodium carbonate - 0.1-49.884, sodium silicate - 0.1-5.0, said photocatalyst - 0.01-5.0, optical bleaching agent - 0.005-5.0.

EFFECT: invention increases stability and bleaching power of sodium percarbonate.

2 cl, 7 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a bleaching agent based on granular sodium percarbonate, coated with a stabilising coat. The stabilising coat contains sodium sulphate, sodium carbonate, sodium silicate and additionally a water-soluble optical bleaching agent, in wt %: sodium sulphate - 50-99.5, sodium carbonate - 0.1-49.88, sodium silicate - 0.1-5.0, optical bleaching agent - 0.01-5.0.

EFFECT: invention increases stability and bleaching power of sodium percarbonate.

2 cl, 7 tbl, 4 ex

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