JP2002513074A - Water-dispersible non-granular detergent products from low-density granular detergent particles - Google Patents

Abstract

  (57) [Summary] A method of making a water-dispersible non-particulate detergent product from a low-density particulate detergent involves providing a low-density particulate detergent composition having an intraparticle porosity in the range of about 10 to about 90% by volume. The method further includes adding the liquid to the low density particulate detergent composition in an amount sufficient to reduce intraparticle porosity by at least about 10%. The method then comprises applying a pressure in an amount sufficient to prepare a water-dispersible non-particulate detergent product having a density of at least about 1000 g / liter, the low-density particulate detergent composition having reduced intraparticle porosity. And a step of compacting the object. The method allows for the preparation of non-granular detergent products that are rapidly dispersible in water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

【Technical field】

The present invention relates to detergent compositions in non-granular form. More specifically, the present invention submerges in water, disassembles easily in water and disperses rapidly in water by using a low density granular detergent composition having a specific bulk density of less than 800 g / l as a starting material. A process for producing a non-particulate detergent product, such as a tablet, block or solid.

[0002]

[Background Art]

Non-granular detergents are an attractive alternative to granular or granular forms of detergent from the standpoint of simplifying the administration of such detergents for automatic washing machines or dishwashers. Non-granular detergents are usually supplied in the form of solids, tablets or briquettes and they not only prevent spillage of the detergent composition, but also allow the consumer to accurately administer the detergent composition per wash. Eliminate the need to calculate. Non-granular detergents minimize consumer contact with the detergent.

An important factor in the successful performance of a non-particulate detergent is the ability to disassemble and dissolve in the washer in a controlled manner according to the desired dissolution profile during the programmed cycle of the machine. Another important performance factor is that the non-granular detergent should be hard enough to facilitate easy handling of the detergent prior to use, and therefore during packaging, shipping and storage and during actual use It does not inadvertently lose, crumble or degrade the structure, both at the time of previous end-user handling.

[0004] Additionally, a highly desirable feature of non-particulate detergents, such as tablets, is the ability to sink and rapidly disperse in water to prepare a wash. To submerge in water, the detergent tablet must have a density greater than 1000 g / liter and in order to disperse in water, the detergent tablet must be breakable in water. However, when preparing laundry tablets from low bulk density detergents, such as those prepared by spray drying (detergent powders have a bulk density of about 650 g / liter or less), a problem often encountered is that detergent powders have a density of at least 1000
The detergent tablets do not disperse easily in water because the force required to compact them into tablets with g / l is so high. This problem,
This is further escalated by the fact that detergent powders prepared from the spray drying process tend to be more porous and sticky. Thus, when these detergent powders are pressed into tablets having a density of at least 1000 g / l, the powder particles stick together and the tablets do not break easily and dissolve in water. Conversely, if tablets prepared from low bulk density detergent powders are compacted using low forces, they will generally disperse in water but at a slower rate. The reason is that they have a density of less than 1000 g / l and thus tend to float on the water before being well dispersed in the water.

[0005] The aforementioned problems are not usually encountered when preparing detergent tablets from detergent powders prepared by the flocculation method. The reason is that detergent powders prepared by the agglomeration process usually have a bulk density of about 700 g / l to about 850 g / l and are therefore required to compress the powder into tablets having a density of at least 1000 g / l. Because the power is not so high. Thus, the detergent tablet prepared by compacting the detergent powder prepared from the coagulation method usually sinks in water. However, agglomerated detergents or "agglomerates" which inherently have higher densities than spray dried detergents or "spray dried granules" generally exhibit a slower rate of dissolution in water as compared to spray dried granules.

[0006] Thus, the manufacture of detergent tablets is a complex problem. It involves more than just the selection of ingredients or compression of a particular detergent composition into tablets.
Tablets must be able to withstand the shock of packaging, handling and distribution without breaking into pieces. In other words, the tablet must be strong. However, the tablet must also have a satisfactory disintegration rate when immersed in water. Tablets known so far generally have a very low strength, preferring strength and exhibiting too long a disintegration time, or choosing a short disintegration time.

A laundry detergent tablet having a core prepared by compressing a particulate material having a detergent surfactant and a builder (particulate material is a detergent tablet prepared by compressing such a particulate material sinks into water. It is highly desirable to have a bulk density of less than 850 g / liter so that it disintegrates quickly and dissolves easily in water.

[0008] This kind of tablet performance is not previously available and this level of performance not only requires a careful selection of the type of detergent making up the core, but also a granular detergent to improve the dissolution of the detergent. Requires a carefully selected density range. Achieving granular detergent bulk density within the optimal range not only takes advantage of the use of a mixture of spray-dried granules and agglomerates, but also prior to the process of compacting the detergent particles into a non-granular form. It is also desirable to take advantage of the benefits of processing the detergent particles in such a way as to reduce porosity and optimally bring the particle porosity into the desired range. Thus, it is necessary to carefully adjust the particle porosity of the granular detergent before compaction. The present invention overcomes the aforementioned problems.

The prior art is full of methods for preparing tablets and coating tablets. One approach is to use acetate to improve the dissolution rate of the detergent compressed into tablets. EP-A No. 0 published on June 13, 1979
No. 002293 discloses a detergent tablet containing a hydrated salt. A preferred hydrated salt is a mixture of sodium acetate trihydrate and sodium metaborate tetrahydrate.

Another approach known in the art is to use effervescent aids to improve tablet disintegration. CA-A-2040307 discloses a laundry detergent tablet comprising an anionic surfactant mixed with sodium carbonate and citric acid.

As far as coated tablets are concerned, GB-A No. 0 published April 22, 1965
No. 989 683 discloses a method for preparing a particulate detergent from a surfactant and an inorganic salt, spraying it onto a water-soluble silicate and pressing the detergent particles into a solid form holding tablet. Finally, readily water-soluble organic film-forming polymers (eg, polyvinyl alcohol) provide a coating that renders the detergent tablet resistant to abrasion and accidental destruction.

[0012] EP-A 0 002 293, published in the European publication June 13, 1979, includes hydrated salts such as acetates, metaborate, orthophosphate, tartrate, sulfate and the like. A tablet coating is disclosed. Another European Publication, June 1996
EP-A-0 716 144 published on the 12th also discloses a laundry detergent with a water-soluble coating which may be an organic polymer, including acrylic acid / maleic acid copolymer, polyethylene glycol, PVPVA and sugar. Discloses a tablet.

US Pat. No. 5,658,874 issued to Alan P. Davis et al. On Aug. 19, 1997 and assigned to Lever Brothers Company,
Method of making a tablet of a detergent composition comprising a detergent active compound, a detersive builder and other ingredients (at least some particles of the composition as a disintegrant and binder that can destroy the structure of the tablet when the tablet is immersed in water) Coated individually with a functional material). However, this patent discloses the use of a high molecular weight binder that generally results in tablets that are more porous.

[0014]

DISCLOSURE OF THE INVENTION

The present invention satisfies the needs by providing a process for making a water-dispersible non-particulate detergent product. Specifically, in one aspect of the invention, the method comprises from about 10 to about 90
Providing a low density particulate detergent composition having an intraparticle porosity in the range of volume%. The method further includes the step of adding the liquid to the low density particulate detergent composition in an amount sufficient to reduce intraparticle porosity by at least about 10%. Then
The method comprises applying a pressure in an amount sufficient to prepare a water-dispersible non-particulate detergent product having a density of at least about 1000 g / liter to produce a low-density particulate detergent composition having reduced intraparticle porosity. Includes the step of making it compact.

[0015] In another aspect of the invention, a non-granular detergent product that is rapidly water dispersible is disclosed. The product provides low density detergent particles having an intraparticle porosity in the range of about 5% to about 90% by volume, reducing the liquid to the low density detergent particles and reducing the intraparticle porosity by at least about 10%. And applying pressure in an amount sufficient to prepare a water-dispersible non-particulate detergent product having a density of at least about 1000 g / liter.
Prepared by a method characterized by compacting low density detergent particles having reduced intraparticle porosity.

In yet another aspect of the present invention, a method of washing soiled garments includes immersing the soiled garments in an aqueous medium containing an effective amount of a non-particulate detergent product prepared by a method as described above. Process.

[0017] In yet another aspect of the present invention, a method of making a water-dispersible non-particulate detergent product from a low density detergent composition is disclosed. The method includes providing a spray-dried detergent granule having a bulk density of less than about 650 g / liter. This method has a bulk density of about 700
providing agglomerated detergent particles having g / l to about 900 g / l. The method still further includes the step of mixing the spray-dried detergent granules and the agglomerated detergent particles to prepare a low-density detergent composition (the spray-dried detergent granules comprise from about 40 to about 80% by weight of the low-density detergent composition). % And the agglomerated detergent particles are present in the range from about 20 to about 60% by weight of the low density detergent composition). The method also includes applying the liquid to the low-density detergent composition in an amount sufficient to reduce intraparticle porosity by at least about 10% and applying a pressure to the water-dispersible non-granular material having a density of at least about 1000 g / liter. Compacting a low density detergent composition having reduced intraparticle porosity by applying it in an amount sufficient to prepare a detergent product.

In yet another aspect of the present invention, there is provided a method of washing a fabric material in a washing machine. The method comprises providing a flexible porous bag suitable for receiving a non-particulate detergent product, providing a non-particulate detergent product prepared by the method, and disposing the non-particulate detergent product in the flexible porous bag. A flexible porous bag for storing detergent products.
Placing in a washing machine having the fabric material to be washed. The flexible porous bag is suitable for allowing the introduction of an aqueous cleaning medium through the bag, thereby dissolving the non-particulate detergent product contained therein in the aqueous cleaning medium and dissolving the resulting cleaning liquid. During the washing cycle, the bag is discharged from the inside of the bag to the outside of the bag and is placed in the aqueous washing medium.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION

Method In a preferred embodiment of the present invention, the method comprises providing a low density particulate detergent composition desirably having an intraparticle porosity in the range of about 10 to about 90% by volume. Preferably, the porosity is in the range of about 15 to about 70% by volume, and most preferably, the porosity is in the range of about 20 to about 65% by volume. This porosity is measured by a mercury porosimeter (the technique is well known to those skilled in the art and need not be described in detail here).

Granular detergent composition The term "granular" as used herein refers to forms that can be compacted into a denser non-granular form, such as powders, granules, particles, flakes and other similar granular forms. .

[0021] Particularly in the case of laundry tablets, detergent particles having components such as builders and surfactants can be spray-dried in a conventional manner and then compacted at a suitable pressure. Surfactants and builders usually provide a substantial portion of the cleaning power of the tablet. The term "builder" is intended to mean any substance that tends to remove calcium ions from solution either by ion exchange, complexation, sequestration or precipitation.

The particulate material used to prepare the detergent tablets provided by the present invention can be prepared by a granulation method or a granulation method. One example of such a process is spray drying (in a co-current or counter-current spray-drying tower) to provide "spray-dried" detergent granules typically having a low bulk density of 600 g / liter or less. Dense particulate material, by the granulated and densified in a high shear batch mixer / granulator, or in a continuous granulation / densification methods (e.g., using a Lodige ^R CB and / or Lodige ^R KM mixers) Can be prepared. Other suitable methods include fluidized bed methods, compaction methods (eg, roll compaction), extrusion, and particulate materials are prepared by chemical methods such as flocculation, crystallization sintering, and the like. The individual particles can be in any other shape, for example, particles, granules, spheres or granules.

[0023] The particulate matter is supplied to a conventional apparatus such as a concrete mixer, a Nauta mixer,
They may be mixed together by a ribbon mixer or other. Alternatively, the mixing process may be performed continuously by weighing each component (by weight) onto a moving belt and blending them in one or more drums or mixers. Liquid spray-on to a mix of particulate matter (eg, a non-ionic surfactant) may be performed. Other liquid components may also be sprayed on to the mix of particulate matter, either separately or premixed. For example, a slurry of perfume and optical brightener may be sprayed. Finely ground flow aids (eg, ground powders of zeolites, carbonates, silicas, etc.) are added to the particulate matter (preferably towards the end of the process) after spraying the nonionic surfactant to make the mix less sticky. Can be.

The detergent particles comprise: (i) a mixture prepared by mixing one or more detergent surfactants, a perborate component and an acid source and optionally other detergent components, and (ii) agglomerating the mixture to form aggregated particles. Alternatively, it can be prepared by an aggregation method comprising preparing an “aggregate”.

Typically, such agglomeration processes involve adding an effective amount of the powder containing an acid source to one or more agglomerators, such as a pan agglomerator, a Z-blade mixer or more preferably an in-line mixer (preferably Are two), for example, Sugi (Netherlands) BV, 29 chrome strat 8211AS, Lelystad, The Netherlands, and D-4790, Elsenner Strasse 7-9, Postfach 2050, Germany.
Includes mixing with highly active surfactant pastes among those manufactured by Gebruda Regige Maschinenbau GmbH of Paderborn 1.
Preferably, a high shear mixer such as Regige CB (trade name) is used.
Most preferably, the high shear mixer is used in combination with a low shear mixer such as Regige CB (trade name), Regige KM (trade name), Sugi KM (trade name). In some cases, only one or more low shear mixers are used. Preferably, the agglomerates are subsequently dried and / or cooled.

Another agglomeration method involves using fluidized beds to mix the various components of the final agglomerate at different stages. For example, preferred particulate detergents according to the present invention include adding a nonionic surfactant, an anionic surfactant and optionally a wax or a mixture thereof to the acid source and other optional ingredients in powdered form, preferably spray-on. By doing so, it can be aggregated. The additional ingredients, including the perborate bleach and optionally the alkalinity source or a portion thereof, are then added and agglomerated in one or more stages;
Thus, final aggregate particles can be formed.

The agglomerates may take the form of flakes, prills, malmose, noodles, ribbons, but preferably take the form of granules. Preferred methods of processing the particles are a method of agglomerating a powder (eg, aluminosilicate, carbonate) with a highly active surfactant paste and a method of controlling the particle size of the resulting aggregate within specified limits. Typical particle sizes are from 0.10 mm to 5.0 mm in diameter, preferably from 0.25 mm to 3.0 mm in diameter.
0 mm, most preferably 0.40 mm to 1.00 mm in diameter. Typically, "aggregates" have a bulk density desirably at least 700 g / liter, preferably about 70 g / l.
It has from 0 g / l to about 900 g / l.

Typically 50% to 95% by weight of surfactant, preferably 70% to 85% by weight
High active surfactant pastes containing a weight percent mix can be used and optionally contain a suitable acid source. The paste may be pumped into the agglomerator at a temperature high enough to maintain a pumpable viscosity but low enough to avoid decomposition of the anionic surfactant used. Operating temperature of paste 50 ° C ~
80 ° C. is typical. Such pastes and methods for preparing and processing such pastes are described, for example, in WO 93/03128. In a particularly preferred embodiment of the present invention, the detergent particles prepared by the agglomeration method have a bulk density of about 600 g / l or more and the detergent is in the form of powder or granules.

In a preferred embodiment of the present invention, the granular detergent composition is a mixture of a spray-dried detergent and an agglomerated detergent, so that the final bulk density of the detergent composition is desirably about 90
0 g / l or less, more desirably from about 600 g / l to about 850 g / l, preferably from about 625 g / l to about 725 g / l. These ranges of bulk density are desirable because if the bulk density of the granular detergent that is the raw material for tablet compression is higher than about 900 g / liter, the solubility of the detergent tablet will be adversely affected. At values below about 600 g / l, the amount of pressure required to prepare a detergent tablet having a density of at least 1000 g / l will not cause the tablet to break easily in water and dissolve quickly. As high as possible, bulk densities of less than about 600 g / liter are undesirable.

In order to achieve the desired bulk density as described above, the granular detergent composition contains a predetermined amount of spray-dried granules and detergent agglomerates in optimal proportions. In this regard, the composition desirably comprises about 40 to about 80% by weight of the spray-dried granules, preferably about 40 to about 6%.
0%, more preferably from about 45% to about 55% by weight. Desirably, the composition comprises about 20 to about 60%, preferably about 40 to about 60%, more preferably about 45 to about 55% by weight of aggregates.

Addition of Liquid to Reduce Detergent Particle Porosity In a preferred embodiment of the invention, the method reduces the liquid to a low density particulate detergent composition by at least about 10% in intraparticle porosity. And the step of adding a sufficient amount of If the porosity reduction is less than about 10%, it is desirable to reduce the intraparticle porosity by at least about 10%, and preferably by at least 20%, since no significant dispersibility of the detergent tablet is expected. Without being limited to a particular theory, the reduced porosity of the spray-dried granules and agglomerates, and the increase in particle density, while the spray-dried granules remain relatively flexible, are theorized to harden the agglomerates Is done. When applying pressure to compact the detergent particle mixture into tablets, for example, it is believed that there is some mechanical engagement between the hard agglomerates and the soft spray-dried granules. It is believed that the spray-dried particles "flow" into the interstitial spaces between the particles, thereby increasing the mechanical bond between the particles upon application of pressure. This means
It forms detergent tablets that are not only strong and resistant to destruction, but also can be quickly disintegrated in water. The reason is that the detergent particles do not "stick" together. Due to the mixture of spray-dried granules and agglomerates in the composition, the dissolution rate of the detergent tablet is also increased due to the rapid solubility of the spray-dried particles in water.

While any liquid for reducing porosity can be used to practice the present invention,
Nonionic compounds are preferred because they also provide cleaning benefits. Suitable nonionic surfactants include compounds formed by the condensation of an alkylene oxide group (having a hydrophilic nature) with an organic hydrophobic compound, which may be aliphatic or alkyl aromatic in nature. The length of the polyoxyalkylene group that is condensed with a particular hydrophobic group can be easily adjusted to produce a water-soluble compound having the desired degree of balance between the hydrophilic and hydrophobic elements. Other examples are nonionic surfactants,
For example, a polyethylene oxide condensate of an alkyl phenol, for example, an alkyl phenol having an alkyl group having about 6 to 16 carbon atoms in either a linear or branched configuration and about 4 to 25 moles of ethylene oxide per mole of alkyl phenol Is a condensate of Still other nonionic surfactants are water-soluble condensates of aliphatic alcohols having from 8 to 22 carbon atoms in either a linear or branched configuration with an average of up to 25 moles of ethylene oxide per mole of alcohol. is there.

[0033] The polyhydroxy fatty acid amide may be produced by reacting a fatty acid ester with an N-alkyl polyhydroxyamine. A preferred amine for use in the present invention is N- (R1) -CH2 (CH2 OH) 4-CH2-OH, where R1 is typically an alkyl, such as a methyl group, and is preferred. The ester is a C12-C20 fatty acid methyl ester. The preparation of polyhydroxy fatty acid amides is described in WO 92 6073 published April 16, 1992. This application describes a process for preparing polyhydroxy fatty acid amide in the presence of a solvent. In a highly preferred embodiment of the present invention, N-methylglucamine is reacted with a C12-C20 methyl ester. Also, the formulators of the particulate detergent compositions have alkoxylated, especially ethoxylated (EO 3-8) C12-C, amidation reactions.
14 states that it may be found to be advantageous to work in the presence of a solvent containing alcohol (page 15, lines 22 to 27). This can directly produce the nonionic surfactant systems preferred in the present invention, such as those having N-methylglucosamide and a C12-C14 alcohol containing an average of three ethoxylate groups per molecule. Nonionic surfactant systems and granular detergents prepared from such systems are described in WO 926160, published April 16, 1992. This application describes a granular detergent composition prepared by finely dispersing and mixing in an Eirich RV02 mixer containing N-methylglucosamide (10%), a nonionic surfactant (10%). (Example 15). Both of these patent applications describe nonionic surfactant systems that have been found to be suitable for use in the present invention, along with suitable synthetic methods.

Other nonionic surfactants that may be used as components of the surfactant system of the present invention include ethoxylated nonionic surfactants, glycerol ether, glucosamide, glycerolamide, glycerol esters, fatty acids, fatty acids Esters, fatty acid amides, alkyl polyglucosides, alkyl polyglycol ethers, polyethylene glycols, ethoxylated alkyl phenols and mixtures thereof.

In a preferred embodiment, the liquid used is one of an ionic surfactant, an anionic surfactant, water and polyethylene glycol, and mixtures thereof. Preferably, the liquid is a non-ionic surfactant, more preferably polyethylene glycol (PEG). Most preferably, PEG has a molecular weight of about 1000
In the best mode, having the following, the molecular weight of PEG is 200. In a preferred embodiment, PEG is added to the detergent composition in a range from about 0.1 to about 10% by weight, preferably about 5% by weight. In a preferred embodiment, the addition of PEG having a molecular weight of about 200 results in a porosity reduction in the range of 5% to 200%.

Dry Detergent Materials The starting dry detergent materials of the present process are preferably carbonate, sulfate, carbonate / sulfate complexes, tripolyphosphate, tetrasodium pyrophosphate, citrate, aluminosilicate, cellulose-based materials and organic It consists of a substance selected from the group consisting of synthetic polymer-absorbable gelling substances. More preferably, the dry detergent material is selected from the group consisting of aluminosilicates, carbonates, sulfates, carbonate / sulfate complexes, and mixtures thereof. Most preferably, the dry detergent material comprises a detersive aluminosilicate builder, referred to as an aluminosilicate ion exchange material, and sodium carbonate.

The aluminosilicate ion exchange material used here as a detergency builder is
Preferably, it has both a high calcium ion exchange capacity and a high exchange rate.
Without wishing to be limited by theory, it is believed that such high calcium ion exchange rates and capacities are a function of several correlation factors derived from the preparation of the aluminosilicate ion exchange material. In that regard, the aluminosilicate ion exchange materials used herein are preferably those disclosed in U.S. Pat. No. 4,605,509 to Kolkir et al. (Procter End Gamble), the disclosure of which is incorporated herein by reference. Manufacture according to.

Preferably, the aluminosilicate ion exchange material is in the “sodium” form. The reason for this is that the potassium and hydrogen forms of the aluminosilicate do not exhibit the high exchange rates and capacities provided by the sodium form. Additionally, the aluminosilicate ion exchange material is preferably in a super-dried form to facilitate the production of free-flowing detergent aggregates as described herein. The aluminosilicate ion exchange material used herein preferably has a particle size that optimizes its effectiveness as a detergency builder. The term "particle size" as used herein refers to the average particle size of a given aluminosilicate ion exchange material as measured by conventional analytical techniques such as microscopy, scanning electron microscopy (SEM), and the like. The preferred particle size of the aluminosilicate is from about 0.1 μm to about 10 μm, more preferably about 0.1 μm.
5 μm to about 9 μm. Most preferably, the particle size is from about 1 μm to about 8 μm.

Preferably, the aluminosilicate ion exchange material has the formula Na _z [(AlO ₂ ) _z. (SiO ₂ ) _y ] xH ₂ O, wherein z and y are integers of at least 6, and z to y Is about 1 to about 5
And x is from about 10 to about 264). More preferably, the aluminosilicate has the formula Na _{12 [(AlO 2) 12 · (SiO} 2) 12 ] xH ₂ O (wherein, x is from about 20 to about 30, preferably about 27). These preferred aluminosilicates are, for example, named Zeolite A
, Zeolite B and Zeolite X. Alternatively, natural or synthetic derived aluminosilicate ion exchange materials suitable for use herein are described in US Pat. No. 3,985,669 to Krummel et al., The disclosure of which is incorporated herein by reference. Can be manufactured as follows.

The aluminosilicate used herein has a CaCO ₃ hardness of at least about 200 mg equivalent / g calculated on an anhydrous basis, preferably a CaCO ₃ hardness of about 300-35.
It is further characterized by an ion exchange capacity of 2 mg eq / g. Additionally, the aluminosilicate ion exchange material may comprise at least about 2 g / g / g of Ca ^++.
Min / -g / gallon, calcium ion exchange rate and more preferably in the range of Ca ⁺⁺ from about 2 grain / gallon / minute / -g / gallon to CA ⁺⁺ about 6 Glen / gallon / minute / -g / gallon Still further characterized by:

In addition, the aforementioned builder substances can be used here as optional coating agents. This
These particular builder substances have the formula (M_x)_iCa_y(CO_Three)_z(Where x is
And i are integers from 1 to 15, y is an integer from 1 to 10, and z is an integer from 2 to 25.
A number, M_iIs a cation, at least one of which is water-soluble, having the formula
Σ_{i = 1 to 15}(X_i× M_i+ 2y = 2z is neutral or “balanced”
"Satisfied to have a charge). Additional details for these builder substances
Details and examples have been described above and are incorporated herein by reference. Preferably
, These builder substances are Na_TwoCa (CO_Three)_Two, K_TwoCa (CO_Three)_Two,
Na_TwoCa_Two(CO_Three)_Three, NaKCa (CO_Three)_Two, NaKCa_Two(CO_Three) _Three , K_TwoCa_Two(CO_Three)_ThreeSelected from the group consisting of
.

Supplementary Detergent Ingredients The starting dry detergent material in the present process can include additional detergent components and / or a number of additional components can be incorporated into the detergent composition in a later step of the process.
These auxiliary components include other detergency builders, bleaching agents, bleaching activators, foaming or defoaming agents, anti-fogging and anti-corrosive agents, soil settling inhibitors, anti-fouling agents, bactericides,
pH adjuster, non-builder alkalinity source, chelating agent, smectite clay, enzyme,
Enzyme stabilizers and fragrances are included. See U.S. Pat. No. 3,936,537, issued Feb. 3, 1976 to Baskerville Jr., incorporated herein by reference.

Other builders are generally various water-soluble alkali metal, ammonium or substituted ammonium phosphates, polyphosphates, phosphonates, polyphosphonates, carbonates, borates, polyhydroxysulfonic acids. It can be chosen from salts, polyacetates, carboxylates, and polycarboxylates. Alkali metal salts, especially the sodium salts, of the foregoing are preferred. Phosphates, carbonates, _C10-18 fatty acids, polycarboxylates, and mixtures thereof are preferred for use herein. Sodium tripolyphosphate, tetrasodium pyrophosphate, citrate, tartrate monosuccinate and disuccinate, and mixtures thereof,
More preferred (see below).

In comparison to amorphous sodium silicate, crystalline layered sodium silicate shows a clearly increased calcium / magnesium ion exchange capacity. In addition, layered sodium silicate is a necessary feature to ensure that magnesium ions are preferred over calcium ions and that substantially all of the "hardness" is removed from the wash water. However, these crystalline layered sodium silicates are generally more expensive than amorphous silicates as well as other builders. The proportion of crystalline layered sodium silicate used must therefore be determined with discretion in order to provide an economically viable laundry detergent.

[0045] Suitable crystalline layered sodium silicate for use herein, preferably, wherein _{NaMSi x O 2x + 1 · yH} 2 O ( wherein, M is sodium or hydrogen, x is about 1. 9 to about 4, and y is about 0 to about 20). More preferably, crystalline layered sodium silicates, ₂ O wherein NaMSi ₂ O ₅ · yH (wherein, M is sodium or hydrogen, y is from about 0 about 20) having the. These crystalline layered sodium silicates and other crystalline layered sodium silicates are discussed in U.S. Pat. No. 4,605,509 to Korkir et al., Previously incorporated herein by reference.

Specific examples of inorganic phosphate builders are sodium and potassium tripolyphosphates, pyrophosphates, polymeric metaphosphates having a degree of polymerization of about 6-21, and orthophosphates. Examples of polyphosphonate builders are the sodium and potassium salts of ethylene diphosphonic acid, the sodium and potassium salts of ethane 1-hydroxy-1,1-diphosphonic acid, and the sodium salts of ethane 1,1,2-triphosphonic acid and It is a potassium salt. Other phosphorus builder compounds are described in U.S. Pat. Nos. 3,159,581, 3,213,030, 3,4.
22,021, 3,422,137, 3,400,176
No. 3,400,148, all of which are incorporated herein by reference.

Examples of phosphorus-free inorganic builders are tetraborate decahydrate, and a weight ratio of SiO ₂ to alkali metal oxide of about 0.5 to about 4.0, preferably about 1.0 to about 2.4.
It is a silicate which has. Here, useful water-soluble phosphorus-free organic builders include:
Various alkali metal, ammonium and substituted ammonium polyacetates, carboxylates, polycarboxylates and polyhydroxysulfonates are mentioned.
Examples of polyacetate and polycarboxylate builders are the sodium, potassium, lithium, ammonium, and substituted ammonium salts of ethylenediaminetetraacetic acid, nitrilotriacetic acid, oxydisuccinic acid, melitic acid, benzenepolycarboxylic acid, and citric acid. is there.

The polymeric polycarboxylate builders are described in Deal US Pat. No. 3,308,067, issued Mar. 7, 1967, the disclosure of which is incorporated herein by reference. Examples of such a substance include water-soluble salts of homopolymers and copolymers of aliphatic carboxylic acids such as maleic acid, itaconic acid, mesaconic acid, fumaric acid, aconitic acid, citraconic acid, and methylenemalonic acid. Some of these materials are useful as water-soluble anionic polymers, as described below, but only in intimate mixtures with non-soap anionic surfactants.

Other polycarboxylates suitable for use herein are described in March 13, 1979
U.S. Pat. No. 4,144,226 issued to Clutchfield et al. And U.S. Pat. No. 4,246 issued Mar. 27, 1979 to Clutchfield et al.
No. 495, both of which are incorporated herein by reference. These polyacetal carboxylates can be produced as described below. The ester of glyoxylic acid and the polymerization initiator are placed together under polymerization conditions. The resulting polyacetal carboxylate is then attached to a chemically stable end group to stabilize the polyacetal carboxylate against rapid depolymerization in alkaline solution, convert to the corresponding salt, Add to the composition.
Particularly preferred polycarboxylate builders are the tartrate monosuccinates described in US Pat. No. 4,663,071, issued May 5, 1987 to Bush et al., The disclosure of which is incorporated herein by reference. An ether carboxylate builder composition comprising a combination with tartrate disuccinate.

Bleaching agents and activators are described in US Pat. No. 4,412,934 to Chung et al., Issued Nov. 1, 1983, and US Pat. No. 4,483, issued to Hartmann Nov. 20, 1984. No. 781 (both incorporated herein by reference). Also, chelating agents are described in US Pat.
No. 3,071, column 17, line 54 to column 18, line 68 (incorporated herein as a reference). A foam control agent is also an optional ingredient and is described in Jan. 2, 1976
U.S. Pat. No. 3,933,672 issued to Bartletta et al.
No. 4,136,045, issued Jan. 23, 979 to Galt et al., Both incorporated herein by reference.

Suitable smectite clays for use herein are Tucker et al., US Pat. No. 4,762,645 issued Aug. 9, 1988, column 6, line 3 to column 7, line 24.
Line (incorporated herein by reference). Additional detergency builders suitable for use herein are described in Baskerville, patent column 13, line 54 to column 16, line 1
U.S. Pat. No. 4,663,07, issued to Bush et al.
No. 1 (both incorporated herein by reference).

Non-particulate detergent products Detergent tablets can be made by simply mixing the solid ingredients together and compressing the mixture in a conventional tablet press, for example, as used in the pharmaceutical industry.

The detergent tablets provided can be prepared in any size or shape. Before compaction, the detergent particles may be surface-treated with the flow aid according to the invention. The detergent tablets provided may be manufactured by using a compacting method, for example a tableting method, briquetting, or an extrusion method, preferably a tableting method. Suitable devices, standard single stroke or a rotary press include [Kotoi (Courtoy ^R), coaches (Korch ^R), Manesuti (Manesty ^R), Bonaruzu (Bonals ^R), etc.]. The term "non-particulate detergent product" as used herein encompasses physical forms such as tablets, blocks, solids and the like.

Non-Granular Detergent Product Coating In one embodiment, the tablet is coated with a coating to provide mechanical strength and impact and chipping resistance to the compressed tablet core. Tablets are coated with a coating that is substantially insoluble in water such that the tablet does not absorb moisture or absorbs moisture only at a very slow rate. The coating is so strong that moderate mechanical shocks applied during handling, packaging and shipping of the tablet result in only very low levels of destruction or wear. Furthermore, the coating is preferably brittle so that it breaks when the tablet is subjected to a stronger mechanical impact. It is further advantageous if the coating substance is dissolved under alkaline conditions or is easily emulsified by surfactants. This avoids depositing undissolved particles or clumps of coating material on the laundry load. This can be important when the coating material is completely insoluble in water (eg, less than 1 g / liter).

“Substantially insoluble” as defined herein means having a very low solubility in water. This means that the solubility in water at 25 ° C. is less than 20 g / l, preferably
It should be understood to mean having less than g / l, more preferably less than 1 g / l. The solubility in water is measured according to the ASTM E1148-87 test protocol "Standard Test Methods for the Determination of Solubility in Water".

Suitable coating materials are fatty acids, adipic acid and C8-C13 dicarboxylic acids, fatty alcohols, diols, esters and ethers. Preferred fatty acids are C
Those having a carbon chain length of 12 to C22, most preferably C18 to C22. Preferred dicarboxylic acids are adipic acid (C6), suberic acid (C8), azelaic acid (CＣ).
9), sebacic acid (C10), undecandioic acid (C11), dodecandioic acid (C12) and tridecandioic acid (C13). Preferred fatty alcohols are C12-C22,
Most preferably, it has a carbon chain length of C14 to C18. Preferred diols are 1,2-octadecanediol and 1,2-hexanediol. Preferred esters are tristearin, tripalmitin, methyl behenate, ethyl stearate. Preferred ethers are diethylene glycol monohexadecyl ether, diethylene glycol monooctadecyl ether, diethylene glycol monotetradecyl ether, phenyl ether, ethyl naphthyl ether, 2-methoxynaphthalene, β-naphthyl methyl ether and glycerol monooctadecyl ether. Other preferred coating materials include dimethyl 2,
2-propanol, 2-hexadecanol, 2-octadecanone, 2-hexadecanone, 2,15-hexadecanedione and 2-hydroxybenzyl alcohol. The coating is a hydrophobic substance having a melting point, preferably between 40C and 180C.

In a preferred embodiment, the coating can be applied in a number of ways. Two preferred coating methods are (a) coating with a molten substance and (b) coating with a solution of the substance. In (a), the coating substance is applied at a temperature above the melting point and solidifies on the tablet. In (b), the coating is applied as a solution (the solvent dries to leave a coherent coating). Substantially insoluble materials can be applied to tablets, for example, by spraying or dipping. Usually, when the molten material is sprayed on to the tablets, it will solidify quickly to prepare a cohesive coating. When the tablet is immersed in the molten material and then removed, the rapid cooling causes a rapid solidification of the coating material again. It has been found that substantially insoluble materials having an apparent melting point below 40 ° C. are not sufficiently solid at room temperature and materials having a melting point above about 180 ° C. cannot be used. Preferably, the substance is between 60C and 160C.
C, more preferably in the range of 70C to 120C.

By “melting point” is meant, for example, the temperature at which a substance becomes a clear liquid when heated slowly in a capillary. For most purposes, the coating is 1% to 10% of the tablet weight
, Preferably 1.5% to 5%.

In one embodiment, the method comprises adding the flow aid to the particulate detergent composition prior to compaction in a range from about 0.1 to about 25% by weight of the particulate detergent composition. It is included. As used herein, the term "flow aid" refers to a substance that can be deposited on the surface of detergent particles to reduce the stickiness of the detergent particles and allow them to flow freely. As flow aids, amorphous silicate, crystalline non-layer silicate, layer silicate, calcium carbonate, calcium carbonate / sodium carbonate double salt, sodium carbonate, clay,
Zeolite, sodalite, alkali metal phosphate, macroporous zeolite,
Examples thereof include porous carrier particles selected from the group consisting of chitin microbeads, carboxyalkyl cellulose, carboxyalkyl starch, cyclodextrin, porous starch, and mixtures thereof.

Preferred flow aids are zeolite A, zeolite X, zeolite Y, zeolite P, zeolite MAP and mixtures thereof. As used herein, the term "zeolite" refers to a crystalline aluminosilicate material. The structural formula of the zeolite is a crystalline unit cell, Mm / n [(AlO2) m (SiO2) y] .xH2O (where n is the valency of the cation M, and x is the water molecule per unit cell). M and y are the total number of tetrahedra per unit cell, and y / m is 1 to
100) is based on the smallest unit of the structure represented by Most preferably, y / m is 1-5
It is. The cation M can be a Group IA and Group IIA element, for example, sodium, potassium, magnesium, and calcium.

In a preferred embodiment of the present invention, the flow aid is desirably about 0.
1 to about 25% by weight, more desirably about 1 to about 15% by weight, preferably about 1 to about 1% by weight.
It is added in an amount within the range of 0% by weight, most preferably about 5% by weight. Flow aid 25
It is undesirable to add more than% by weight. The reason for this is that too much force is needed to stick together the detergent particles and keep them in a granular form. The addition of flow aids in amounts less than about 0.1% by weight is also undesirable. The reason is that little or no reduction in the stickiness of the detergent particles occurs, which does not easily disintegrate the detergent tablets obtained upon compression into a granular form when placed in water in a washing machine Will.

[0062] In one embodiment, the flow aid has a dye adsorbed on a surface prior to deposition on the detergent particles. Preferably, the flow aid is a zeolite containing preferably up to about 20% desorbable water, more preferably up to about 8% desorbable water, and most preferably up to about 5% desorbable water. Such materials may be activated / activated by first heating, optionally under reduced pressure (about 0.001 to about 20 Torr) to about 150-350 ° C.
It may be obtained by dehydration. After activation, the perfume is slowly and thoroughly mixed with the activated zeolite, optionally heated to about 60 ° C. for up to about 2 hours to promote absorption equilibrium within the zeolite particles. The perfume / zeolite mixture is then cooled to room temperature and is in the form of a free flowing powder. The term "perfume" is used to indicate a fragrance that is subsequently released in an aqueous bath and / or on a fabric that is contacted with it. Perfumes will most often be liquids at room temperature. Various chemicals are known for perfume applications, including substances such as aldehydes, ketones, esters, and the like. More usually, naturally occurring plant and animal oils and exudates, consisting of a complex mixture of various chemical components,
It is known for use as a fragrance. The perfume of the present invention can be relatively simple in composition or consist of a highly sophisticated and complex mixture of natural and synthetic chemical components, all selected to give the desired odor. Typical fragrances can consist of woody / earthy bases containing exotic substances such as, for example, sandalwood oil, civet, patchouli oil. The perfume can also have a light floral fragrance, for example, rose extract, violet extract and lilac. Also, the flavor may be a desirable fruity odor, for example, lime,
It can be formulated to give lemon and orange odors. Any chemically compatible substance that exudes a pleasant or otherwise desirable odor can be used in the scented compositions of the present invention. Examples of the fragrance include profragrances, for example, acetal profragrance, ketal profragrance, ester profragrance (for example, digeranyl succinate), hydrolyzable inorganic-organic profragrance,
And mixtures thereof. These profragrances may release fragrance substances as a result of simple hydrolysis, or may be pH-change triggered profragrances (eg, pH reduction), or may be enzyme-releasing profragrances Good.

In a preferred embodiment, the amount of perfume adsorbed on a carrier material such as zeolite is preferably in the range of about 0.1 to about 50% by weight of the zeolite powder, more preferably about 0.5%. To about 25% by weight, most preferably from about 1 to about 15% by weight.

Compaction of Granular Detergent for Preparing Non-Granular Detergent Product In a preferred embodiment, the method comprises the steps of providing a sufficient amount of a water-dispersible non-particulate detergent product having a density of at least about 1000 g / l. Still further comprising compacting the granular detergent composition having at least 10% reduced porosity by applying pressure. It is desirable to prepare a detergent tablet having a density of at least about 1000 g / liter so that the tablet will sink into water. If the density of the detergent tablet is less than about 1000 g / liter,
The tablet will float when placed in the water in the washing machine and this will detrimentally slow the dissolution rate of the tablet in water. Density at least about 1000g
It is desirable to apply at least a pressure that is much higher than that which is sufficient to compress the granular detergent material to prepare a tablet having per liter. Too low a pressure will result in compressed tablets having a density of less than about 1000 g / liter.

[0065]

【Example】

Example A Detergent tablets of the following composition are prepared from detergent particles having at least a 10% reduced porosity before the particles are compressed into tablet form.

Table A1 Ingredient % by Weight Detergent Particles 95.00 Polyethylene glycol (molecular weight 200) 5.00 Total 100.00 Detergent particles have the following composition:

Table A2 Granular detergent component weight% _C12-16 linear alkyl benzene sulfonate 8.80 _C14-15 alkyl sulfate / _C14-15 alkyl 8.31 ethoxy sulfate _C12-13 alkyl ethoxylate 1.76 polyacrylate (molecular weight 4500) 2.40 polyethylene Glycol (molecular weight 4000) 0.96 sodium sulfate 8.40 aluminosilicate 21.28 sodium carbonate 16.80 protease enzyme 0.32 sodium perborate monohydrate 2.08 lipase enzyme 0.17 cellulase enzyme 0.08 NOBS extrudate 4.80 citric acid monohydrate 2.25 sodium bicarbonate 2.75 sodium acetate 15.00 Free water 1.60 Other trace components (perfumes, etc.) 2.24 Total 100.00 The prepared detergent tablets are coated with a coating having the following composition.

Table A3 Detergent tablets with 3 component weight% PEG 91.10 Coating: dodecane diacid 8.00 carboxymethylcellulose 0.90 total 100.00 Optionally, a flow aid (zeolite) may also be present in the granular detergent composition at about 5% by weight of detergent
And mixing by one of various methods, for example, stirring.

Tablets are prepared by compressing the tablet ingredients in a cylindrical die having a diameter of 55 mm using a laboratory press having the trade name Carver Model 3912 to prepare tablets having a height of 20 mm. Prepare. The prepared tablets were then coated with a protective coating by immersing the tablets in the coating melt bath for about 3 seconds. The molten coating bath is maintained at a temperature of about 145 ° C.

The term “NOBS extrudate” as used herein refers to Eastman Chemicals, Inc.
Acronym for sodium nonanoyloxybenzenesulfonate, a chemical commercially available from Incorporated. The carboxymethylcellulose used in the above examples is commercially available from Metsa Cellular and has the trade name Nymcel
) Sold as ZSB-16.

Measurement of Dispersibility in Water The following method measures the dispersion rate (ROD) of a detergent tablet expressed as the percentage of residue remaining after "t" minutes ("t" is 3, 5 and 10 minutes). ) Used to measure). The equipment used was a 5000 ml glass beaker, a stopwatch with alarm, an electric stirrer with variable speed IKARW20DZM or equivalent, a cage made of perforated metal gauze (52 mm in diameter, 40 mm in height, approx. And a scale with an accuracy of 0.1 g.

The method includes the following steps. A beaker is charged with 4000 ml (+/- 50 ml) of 20 ° C (+/- 1 ° C) distilled water. Attach the cage tester to an electric stirrer. A tablet of known weight is placed in a cage and the cage is connected to a stirrer. Submerge the cage in a beaker with the cage suspended approximately halfway and turn on the stirrer at 80 rp.
Start at a fixed speed of m. Start the stopwatch. The agitator is stopped after 3 minutes. Lift the cage out of the water and weigh the tablet residue remaining in the cage. The residue ratio is calculated by the following equation.

Residue rate = Tablet weight after “t” minutes × 100 Initial tablet weight The remaining tablets are returned to the cage and the process is repeated for an additional 2 and 5 minutes, and after 3, 5 and 10 minutes. The yield data of the tablet dispersion is given.

As used herein, the term “dispersible in water” is defined as a measure of percent residue as calculated above after 3 minutes. In other words, for example, a detergent tablet having 5% less residue by weight than another detergent tablet would appear to have a 5% higher dispersibility in water.

Unexpectedly and surprisingly, non-particulate detergent products, such as detergent tablets, have a density of at least about 1000 g / l, but have a non-ionic liquid added to the detergent composition according to the invention. Not at least about 5 compared to another non-granular detergent product
It has been found to have a% higher dispersibility in water.

In another aspect of the invention, a method of washing a fabric material in a washing machine comprises providing a flexible porous bag suitable for receiving a non-particulate detergent product, and providing a non-particulate detergent product. And placing the non-particulate detergent product in a flexible porous bag and placing the flexible porous bag containing the detergent product in a washing machine having the fabric material to be washed. The flexible porous bag is permeable to water and the washing medium and is thus suitable to allow the introduction of the aqueous washing medium through the bag, whereby the non-particulate detergent contained therein The product is dissolved in the aqueous washing medium and the resulting washing liquid is discharged from the inside of the bag to the outside of the bag during the washing cycle and enters the aqueous washing medium.

The flexible porous bag is made from a material that can retain the non-particulate detergent product without passing it through until the detergent product dissolves in the cleaning medium. Also, the bag is made from a material that can withstand the temperatures at which the laundry is washed in the washing machine. The method of the present invention comprises:
Non-granular products which may be applied not only to non-granular detergents, but also active during washing, such as bleaching agents, for example agents releasing chlorine or active oxygen (peroxygen compounds),
Bleaching catalysts, bleach activators, bactericides, foam control agents, brighteners, agents that prevent redeposition of stains, enzymes, softeners, agents that can remove grease stains, or have a direct effect on stains It may be applied to other ingredients that are not but can play a role in the laundry washing process.

The flexible bag may be made from a material that provides sufficient water resistance, such as a woven or non-woven material made from natural or synthetic fibers. For example, a bag
A mesh shape having a mesh opening of about 0.5 mm or less or about 0.5 mm to about 0.8 mm
Made from pure cotton in the form of a non-woven article having openings having a size in the range

Thus, while the present invention has been described in detail, various changes may be made without departing from the scope of the invention and the invention is not limited to what is described in the specification. It will be obvious to those skilled in the art that this is not considered.

──────────────────────────────────────────────────続 き Continuation of front page (81) Designated country EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE ), OA (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, GM, KE, LS, MW, SD, SL, SZ, UG, ZW), EA (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR , BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS , JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZA, ZW (71) CINCINNATI, OHIO, UNITED STATES OF AMERICA (72) Inventor Les, Charles, Zorve, Ohio, United States, Loveland, Paxton, Guinea, Road, 6674 (72) Inventor Thomas, Edward, Stone United States of America, West, Chester , Secret, creek, coat, 7517 F term (reference) 4H003 AB19 AB27 AB31 AC08 BA17 BA18 DA01 DA19 EA12 EA16 EA28 EB07 EB08 EB22 EB30 EB36 EC01 EC02 EC03 ED02 EE05 FA32

Claims (14)

[Claims] 1. A low-density detergent particle having (a) an intra-particle porosity in the range of 5 to 90% by volume, and (b) said low-density detergent particle having at least 10% (C) applying said pressure in an amount sufficient to prepare a water-dispersible non-particulate detergent product having a density of at least 1000 g / l. A method for producing a water-dispersible non-particulate detergent product from low-density detergent particles, characterized by compacting low-density detergent particles having reduced intra-particle porosity. 2. The method of claim 1, wherein the low density detergent particles of step (a) have an intraparticle porosity in the range of 10 to 80% by volume. 3. The method according to claim 1, wherein the low density detergent particles of step (a) have a bulk density of 400 g / l or more. 4. The low-density detergent particles of the step (a) have a bulk density of 400 g / liter to 850 g / liter.
4. The method according to any of the preceding claims, having a liter. 5. The liquid of claim 1, wherein said liquid is a nonionic surfactant and is added to said low density detergent particles in an amount sufficient to reduce said intraparticle porosity by at least 20%.
The method according to any one of claims 1 to 4. 6. adding said liquid in an amount in the range of 0.1 to 10% by weight of said low density detergent particles;
The method according to claim 1. 7. The method according to claim 1, wherein the liquid is selected from the group consisting of a nonionic surfactant, an anionic surfactant, water, polyethylene glycol, and a mixture thereof. Method. 8. The method according to claim 1, wherein the liquid is a nonionic surfactant. 9. The method according to claim 1, wherein the liquid is polyethylene glycol having a molecular weight of less than 1000. 10. The water-dispersible non-granular detergent product having a density of at least 1000 g / l, but without the liquid added to the low-density granular detergent composition as in step (b). 10. The method according to any of the preceding claims, wherein the method has at least 5% greater dispersibility in water compared to the detergent product. 11. A low-density detergent particle having (a) an intra-particle porosity in the range of 5 to 90% by volume; and (b) providing the low-density detergent particle with at least 10% (C) applying said pressure in an amount sufficient to prepare a water-dispersible non-particulate detergent product having a density of at least 1000 g / l. A rapidly water-dispersible non-particulate detergent product prepared by a method characterized by compacting low-density detergent particles having reduced intra-particle porosity. 12. A soil, characterized by immersing soiled garments in an aqueous medium containing an effective amount of a non-particulate detergent product prepared by the method according to any one of claims 1 to 11. Washing clothes. 13. A spray-dried detergent granule having a bulk density of less than 650 g / l is prepared; (b) agglomerated detergent particles having a bulk density of 700 g / l to 900 g / l are prepared; The low-density detergent composition is prepared by mixing the spray-dried detergent granules and the agglomerated detergent particles (provided that the spray-dried detergent granules are 4% of the low-density detergent composition).
0-80% by weight and said agglomerated detergent particles are present in the range of 20-60% by weight of said low density detergent composition), (d) said low density detergent composition comprises said particles Adding the liquid in an amount sufficient to reduce the internal porosity by at least 10%; and (e) applying pressure in an amount sufficient to prepare a water-dispersible non-particulate detergent product having a density of at least 1000 g / l. Thereby making the low-density detergent composition having reduced intraparticle porosity compact, thereby producing a water-dispersible non-particulate detergent product from the low-density detergent composition. 14. A flexible porous bag suitable for receiving a non-particulate detergent product, wherein the non-particulate detergent product prepared by the method according to any one of claims 1 to 13 is provided. Placing the non-particulate detergent product in the flexible porous bag; placing the flexible porous bag containing the detergent product in a washing machine having a fabric material to be cleaned; The porous bag is suitable for allowing the introduction of an aqueous cleaning medium through the bag, thereby dissolving the non-particulate detergent product contained therein in the aqueous cleaning medium and washing the resulting cleaning liquid. A method for washing fabric material in a washing machine, characterized in that the material is discharged from the inside of the bag to the outside of the bag during the cycle and is put into the aqueous washing medium.