JPH0684520B2 - Liquid detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid detergent composition of the type containing a structure formed from a cleaning active, the active structure being as a separate phase in a continuous phase, which is predominantly aqueous. Exist in a distributed manner. This aqueous phase usually contains dissolved electrolyte.

The structuring as described above is very well known to the person skilled in the art and can be intentionally realized to impart various properties such as flow characteristics and / or a cloudy appearance that are preferred by the consumer. Also, many active structure liquids can suspend particulate solids such as detergency builders and abrasive particles.

Some of the various active structurings that are feasible are described in
K. Walters (Ed.), 'Rheometry: In-dustrial Applicat
HA 'in ions', J. Wiley & Sons, Letchworth, 1980
nes, 'Deter-gents', Ch.2. The ordering of such systems, as obtained by their structuring, usually increases as the concentration of surfactant and / or electrolyte increases. At very low concentrations, the surfactants can exist as molecular solutions or spherical micellar solutions, both of which are isotropic. When a surfactant and / or an electrolyte is further added,
Structured (anisotropic) systems can be produced. Each of these systems is variously referred to as a rod-shaped micelle, a planar lamellar structure, a lamellar droplet, or a liquid crystal phase. Often, different researchers have used different terminology to refer to structures that are actually the same. For example, European Patent Publication No. 151,884 refers to lamella droplets as "spherulites". Determining the presence or absence of a surfactant structured system in a liquid, as well as identifying the system, can be accomplished by one of ordinary skill in the art, such as optical techniques, various rheometry, X-ray or neutron diffraction, and optionally electron microscopy Can be carried out by a known method.

A common example of an internal surfactant structure as described above is the dispersion of lamellar droplets (lamellar dispersion). This lamellar droplet has an onion-like shape composed of two concentrically located surfactant molecular layers, and water or an electrolyte solution (aqueous phase) is trapped between the two molecular layers. Such a tightly encapsulated system of droplets provides a highly desirable combination of physical stability and solid suspension properties under useful flow properties.

The electrolyte can only be dissolved in the aqueous continuous phase or can also be present as suspended solid particles. The solid particles that do not dissolve in the aqueous phase can be replaced with or suspended with any solid electrolyte particles.

The product forms are usually three types: heavy duty fabric cleaning liquids, liquid abrasives and general purpose cleaners. In the first type, the suspended solids may be substantially the same as the dissolved electrolyte, i.e., excess electrolyte above the solubility limit. This solid is normally present as a detergency builder, ie in the wash liquor to counteract the effect of calcium ions on water hardness. Moreover, it may be desirable to suspend substantially insoluble particles of a bleaching agent such as diperoxide decanedioic acid (DPDA). In the second class, the suspended solids are usually particulate abrasives and are insoluble in the system. In this case, the electrolyte is another substance that is water-soluble and is present to contribute to the structuring of the active substance in the dispersed phase. However, in some cases, the abrasive may include some soluble salts that dissolve upon dilution of the product. In the third class, a product thickening structure is used to achieve the consumer preferred flow characteristics and optionally to suspend the pigment particles. A first type of composition is disclosed, for example, in European Patent Publication No. 38,101 filed by the applicant, and a composition containing suspended DPDA bleach is disclosed in European Patent Publication No. 160,342. There is. Examples of the second type of composition are disclosed in EP-A-104,452 filed by the applicant. A third type of composition is described, for example, in U.S. Pat.
No. 840.

Two problems are usually encountered when preparing the above systems, especially liquids containing solids suspended by lamellar droplets.
The first is the high viscosity which makes it difficult to pour the product, and the second is the instability, i.e. the disperse and aqueous phases when stored at elevated temperature or even at ambient temperature. Tend to separate. Therefore, in the preparation of such liquids, one must always try to select the properties and concentrations of the active substance and the electrolyte so as to obtain the required rheological properties.

This preparation technique has always been realized in order to optimize the components of the preparation to achieve the desired balance of flowability and stability, but some combinations are not practical. One example is where it is desired to produce a concentrated product in which the total amount of detergent actives is relatively high compared to the other ingredients. In this case, the main problem is usually an unacceptable increase in viscosity.

Generally, one method of controlling viscosity is to prepare a liquid to be shear thinning, i.e., the liquid composition remains highly viscous while resting in a container, but the movement of pouring causes shear forces to yield. Prepare to flow more easily when crossed. This property is utilized in the composition disclosed in the above-mentioned European Patent Publication No. 38,101 filed by the applicant. Unfortunately, it has been found that this property is not readily available, for example, in all theoretically possible combinations of components of liquids with high levels of activity.

It is also known that the inclusion of fabric softening clays (eg bentonite) in liquids can lead to unacceptable increases in viscosity. One way to alleviate this drawback was to additionally include a small amount of a soluble low molecular weight polyacrylate. This method is disclosed in British Patent Publication No. 2,168,717. However, when the above-mentioned polymers are used for controlling the viscosity of a very wide range of structural liquids, in some cases, it is attempted to contain more and more polymers. Another or additional reason for wanting to use this polymer in greater amounts is that it has detergency builder properties, ie, properties that offset the effects of calcium ions on water hardness. . This is particularly important when it is desirable for environmental reasons to replace the polymer with (in whole or in part) a conventional phosphate builder.

Unfortunately, attempts to dissolve relatively large amounts of polymer in the structural liquid (as well as attempts to contain relatively large amounts of optional components of the structural liquid) tend to be unstable, ie, two or more different An increased tendency to separate into phases is often observed.

However, Applicants have adjusted the composition so that when such instabilities occur, only a portion of the polymer is dissolved and the balance is contained in the composition in a stable "insoluble" phase. It has also been discovered that can increase the amount of polymer that can be stably contained.

That is, the composition of the present invention provides a liquid detergent composition comprising a structural phase containing a detergent active dispersed in an aqueous phase containing a dissolved electrolyte, and a viscosity-reducing polymer, wherein The polymer is only partially soluble in the electrolyte-containing aqueous phase.

In a preferred embodiment, the composition of the invention is sufficiently stable
Less than 2% phase separation occurs on storage for 21 days at 25 ° C, although in some cases a somewhat lesser stability may be acceptable.

It is possible for the composition to contain a relatively large amount of polymer without causing instability, the viscosity achieved being acceptably low, preferably a shear rate of 21 s.
^-1 and less than ¹ Pas, but in some cases slightly higher viscosities may be acceptable.

Without wishing to be bound by any interpretation or theory, the applicant is observed as one explanation for such work. The undesired premature initiation of instability, as mentioned above, is a condition under which a polymer-free liquid will decrease in liquid viscosity as the amount of polymer added increases, but above a certain limit, the polymer will suddenly not dissolve. It is shown that it is due to having.

The sudden disappearance of the added polymer is shown schematically by curve A in FIG. The dashed line indicates the onset of instability, followed by the instability. However, the polymer samples do not all contain molecules of the same sequence and the same molecular weight, but have different molecular spectra depending on the degree of polymerization (copolymers have different component ratios). For simplification of Applicants' theory, the present invention consists in adjusting the conditions of the liquid such that one broad category of polymers is still soluble at much higher concentrations than the other category of polymers. It can be considered to be obtained. In FIG. 1, curve B represents a category of polymers that may still be soluble at higher concentrations under certain specific conditions (as opposed to curve A), while some do not dissolve at low concentrations. The numerator is shown by curve C. The polymer shown by curve D seems to be able to be included stably. This is clearly an oversimplification, since it is unlikely that polymer samples, under any combination of conditions, will fall loosely into these two broad categories. In fact, it would be reasonable to assume that the results are continuous. Nevertheless, this simplified explanation will help to understand the phenomenon presented in the upper part.

Applicants believe that molecules that do not dissolve (curve C) while other molecules continue to dissolve (curve B) are contained in the structured liquid in the suspended precipitation phase. Evidence suggesting this phenomenon was obtained by electron microscopy.

In other words, the present invention involves modifying the composition to become prematurely unstable at higher polymer concentrations to achieve the results as previously described. Thus, in effect, it can be said that the amount of polymer stably contained in the composition according to the invention is greater than the amount of polymer in the reference composition, wherein at least one parameter of the composition according to the invention is
Substantially more than the maximum amount of polymer of the reference composition, that is, if more than that amount of polymer dissolves in a 21-day storage at 25 ° C., the phase separation of the reference composition is more than 2%. Thus, the parameters of the reference composition are changed.

Composition parameters that are modified to dissolve more than the maximum polymer amount of the reference composition can be pH, the amount or nature of the electrolyte in the composition, and optionally the amount or nature of the cleaning active.

The viscosity-reducing polymers that can be used in the present invention can be selected from a very wide range, including in particular the polymer and copolymer salts known as detergency builders. For example, polyethylene glycol (including builders and non-builders), polyacrylates, polymaleates, polysaccharides, polysugarsulphonates, and copolymers of any of these can be used. In some preferred embodiments, the viscosity-reducing polymer includes an alkali metal salt of polyacrylic acid, polymethacrylic acid or maleic acid, or a copolymer containing an anhydride thereof. Preferably, the pH of compositions containing these copolymers is above 8.0. Generally, the amount of polymer that reduces the viscosity can vary greatly depending on what and how much of the other components of the composition are used. However, generally 0.5-4.5% by weight,
For example, 1 to 3.5% by weight.

It is further preferred in some embodiments of the present invention to also contain a second polymer, substantially all of which is soluble in the aqueous phase, which polymer contains more than 5 g of sodium nitrilotrix in 100 ml of a 5% by weight aqueous solution thereof. 2% by weight of polyethylene glycol having an electrolyte resistance of acetate and having an average molecular weight of 6,000 in a 20% aqueous solution
The above has a vapor pressure less than or equal to the vapor pressure of the reference aqueous solution dissolved in water, in which case the molecular weight of the second polymer is at least 1,
It is 000. Mixtures of such second polymers may also be used.

A composition having better stability at the same viscosity (compared to a composition that does not contain a second polymer) or a composition that is similarly stable and has a lower viscosity, by including a second polymer. It becomes possible to prepare a product. The second polymer may also reduce the drift of increasing viscosity if it also results in a decrease in viscosity.

It is especially preferred to include the second polymer when the insoluble portion of the (first) polymer that reduces the viscosity is large. This is because the ability of the first polymer as a builder is excellent (because a relatively large amount of the polymer can be stably contained), but the decrease in viscosity is not preferable (because the polymer dissolves only slightly). is there. That is, the second polymer can function usefully to further reduce the viscosity to an ideal level.

The second polymer is preferably contained in 0.05 to 20% by weight of the entire composition, most preferably 0.1 to 2.5% by weight,
Particularly, 0.2 to 1.5% by weight is preferably contained. In many (but not all) compositions, levels above the above levels can cause instability. A number of different polymers can be used as the second polymer as long as they meet the needs in terms of electrolyte resistance and vapor pressure. The electrolyte resistance is calculated by measuring the concentration of sodium nitrilotriacetate (Na
NTA) solution, the system being neutral, ie p
Adjust H to about 7. This measurement is preferably carried out using sodium hydroxide. Preferred electrolyte resistance is NaNTA1
It is 0 g, more preferably 15 g. The vapor pressure of the second polymer is the same as that of UK Patent Publication No. 2,053, filed by the applicant.
As outlined in No. 249, it must be small enough to show sufficient water binding capacity. The vapor pressure is preferably measured with a standard aqueous solution having a concentration of 10% by weight, in particular 18% by weight.

A typical group of polymers that meet the above needs and can be used as the second polymer includes polyethylene glycol, dextran, dextran sulfonate, and polyacrylate-maleic acid copolymers. Whether a given polymer is only partially or substantially completely soluble throughout the system depends on the other ingredients and depends, among other things, on the amount and type of electrolyte material.

The second polymer should have an average molecular weight of at least 1,000, with a minimum average molecular weight of 2,000 being preferred. A typical average molecular weight range for achieving advantageous viscosity control is 1,200 to 30,000, especially 5,000 to 30,000.

The cleaning active can be any material known to those skilled in the art for producing structured liquids, usually one of anionic, cationic, nonionic, zwitterionic and zwitterionic surfactants. You can select from the above. However, one example of a preferred combination comprises a) a nonionic surfactant and / or a polyalkoxylated anionic surfactant, and b) a non-polyalkoxylated anionic surfactant.

In some embodiments, the cleaning active may also include alkali metal soaps of fatty acids, preferably having 12 to 18 carbon atoms. The fatty acids are generally oleic acid, ricinoleic acid and fatty acids derived from castor oil, rapeseed oil, peanut oil, coconut oil, palm kernel oil, or mixtures of these acids. Sodium or potassium soaps of the above acids may be used, potassium soaps being preferred.

Nonionic surfactants suitable for use are in particular hydrophobic groups such as fatty acid alcohols, acids, amides, or hydrophobic groups such as alkylphenols with alkylene oxides, especially ethylene oxide alone or together with propylene oxide, and reactive hydrogen atoms. Reaction products of compounds having Particular as a non-ionic detergent compounds, alkyl (C ₆ ~C ₂₂₎ phenol - ethylene oxide condensates,
First or second straight or branched chain aliphatic (C ₈ ~
C ₁₈ ) alcohol condensation products, and products obtained by condensing ethylene oxide with the reaction product of propylene oxide and ethylenediamine. Other so-called nonionic detergent compounds include long chain tertiary amine oxides, long chain tertiary phosphine oxides and dialkyl sulphoxides.

Anionic surfactants are usually water-soluble alkali metal salts of organic sulfates and sulfonates containing free alkyl groups having about 8 to about 22 carbon atoms, where the term "alkyl" refers to higher free acyl groups. It is also intended to mean the alkyl part of the radical. Suitable examples of synthetic anionic detergent compounds, sodium and potassium alkyl sulfates, especially for example tallow or higher generated from coconut oil (C ₈ ~C ₁₈₎ the sulfate obtained by sulphating alcohols; sodium and potassium alkyl (C ₉ ~C ₂₀₎ benzene sulphonates, particularly sodium linear secondary alkyl (C ₁₀ ~C ₁₅₎ benzenesulfonate; sodium alkyl glyceryl ether sulfates, especially synthetic derived from higher alcohols and oil derived from tallow or coconut oil the ethers of alcohols; sodium coconut oil fatty monoglyceride sulfates and sulfonates; higher (C ₈ ~C ₁₈₎ fatty alcohols with alkylene oxides, especially sodium and potassium sulfates of reaction products of ethylene oxide Salts; reaction products of fatty acids such as coconut oil fatty acids esterified with isethionic acid and neutralized with sodium hydroxide; sodium and potassium salts of fatty acid amides of methyl taurine; α
- Oreifin (C ₈ ~C ₂₀₎ and alkane monosulfonates such as those obtained by the reaction of sodium bisulfite, and the paraffin is hydrolyzed with a base after the reaction with SO ₂ and Cl ₂ produces a random sulfonate And an olefin sulfonate, wherein the term "olefin sulfonate" refers to an olefin,
In particular, it means a substance obtained by reacting a C ₁₀ -C ₂₀ α-olefin with SO _3, and then neutralizing and hydrolyzing the reaction product. The preferred anionic detergent compounds are sodium (C ₁₁ -C ₁₅ alkyl benzene sulfonates and sodium (C ₁₆ ~C ₁₈₎ alkyl sulfates.

The compositions of the present invention preferably contain a detergency builder material. This substance can be any substance capable of lowering the level of free calcium ions in the wash liquor, preferably the composition is such that it produces an alkaline pH, suspends stains dropped from the fabric and disperses the fabric softening clay substance. Provides other advantageous properties. Such substances can be classified as inorganic, organic non-polymerizable and organic polymerizable.

Generally, it is preferred that any inorganic builder (if water soluble) will include all or part of the electrolyte. It is also preferred that the liquid contains suspended solids, especially as all or part of the builder (where the builder need not be water soluble). The electrolyte usually makes up 1-60% by weight of the total composition. In some preferred embodiments, the suspended solids include water insoluble amorphous or crystalline aluminosilicates because the liquids in this case tend to have high viscosities and thus require viscosity reduction by the polymer. is there. As mentioned above, very often the polymers are themselves builders and, with zeolites, form very useful phosphorus-free builder systems.

However, examples of phosphorus-containing inorganic detergency builders, if present, include water-soluble salts, especially alkali metal pyrophosphates, orthophosphates, polyphosphates and phosphonates. Specific examples of inorganic phosphate builders include sodium and potassium tripolyphosphate, phosphates and hexametaphosphate.

Examples of where phosphorus-free inorganic detergency builders are present include water-soluble alkali metal carbonates, bicarbonates, silicates and crystalline and amorphous aluminosilicates. Specific examples include sodium carbonate (with or without calcite species), potassium carbonate, and sodium and potassium bicarbonates and silicates.

Examples of non-polymerizable organic detergency builders, when present, include alkali metal, ammonium and substituted ammonium polyacetates, carboxylates, polycarboxylates, polyacetylcarboxylates and polyhydroxy sulfonates. Specific examples include sodium, potassium, lithium, ammonium and substituted ammonium salts of ethylenediaminetetraacetic acid, nitrilotriacetic acid, oxydisuccinic acid, mellitic acid, benzene polycarboxylic acid and citric acid.

In addition to the components already mentioned some optional components may also be present,
Such ingredients may include, for example, foam enhancers such as alkanolamides derived from palm kernel oil fatty acids and coconut oil fatty acids, especially monoethanolamide, foam inhibitors, oxygen release such as sodium perborate and sodium percarbonate. Bleach, peracid bleach precursor, chlorine-releasing bleach such as trichloroisocyanuric acid, inorganic salts such as sodium sulphate, as well as fluorescent agents, fragrances, proteases, lipases (e.g. from Novo) which are usually present in very small amounts. Enzymes such as Lipolase® and amylase, fungicides, colorants and fabric softening clay materials.

The compositions of the present invention can be prepared by conventional liquid detergent composition processing techniques known to those skilled in the art. However, the order of addition of the components can be important. Thus, one example of a preferred order of addition (in continuous mixing) is to first add the soluble electrolyte to water, then add any insoluble material such as aluminosilicate, then the polymer, and then the active material. Yes, the insoluble material, polymer and active material may be mixed prior to addition to the electrolyte-water phase. In another preferred order of addition, any insoluble material, such as aliminosilicate, partially soluble polymer in water, followed by the cleaning active, is added to the electrolyte. The resulting mixture is 30
It is possible to cool below 0 ° C. and then add any trace and additional components. While (optionally) adding a second polymer to reduce the viscosity to the desired level, it is often possible to "titrate" the viscosity to the required level by adding the second polymer in small portions. Finally, if necessary, the pH of the composition can be further adjusted, for example by adding small amounts of caustic material.

The invention is detailed below by means of non-limiting examples.

Material Specification The following rules apply to all examples. All proportions are by weight unless otherwise indicated.

Active substance Na LAS = Na-dodecylbenzene sulfonate LES = Lauryl ether sulphate (about 3 EO) Nonionic (1) = Ethoxylated fatty alcohol (C _13-15 EO ₃ ) Nonionic (2) = Ethoxylated Fatty alcohols (C _13-15 EO ₇ ) Major viscosity-reducing polymers Polymer builder (1) = copolymer of acrylate and maleate sodium salt Maleic acid: acrylic acid about 3.8: 1, average MW about 70,000.

Polymer builder (2) = copolymer of acrylate and maleate sodium salt, maleic acid: acrylic acid is about 1.6: 1, average MW is about 50,000.

"Second" polymer (1) Na-polyacrylate, average MW about 1,200.

(2) Na-polyacrylate, average MW about 2,500.

(3) Na-polyacrylate, average MW about 5,000.

(4) Na-polyacrylate, average MW about 8,000.

(5) Na-polyacrylate, average MW about 15,000.

(6) Na-polyacrylate, average MW about 30,000.

Minor components Enzyme = proteolytic form Example 1 The compositions of Table I below were prepared. These compositions had stability and viscosity as shown in this table.

The parameters marked "var" were of varying values and the stability and viscosity measurements for them are shown in Table II.
And Table III respectively. In the examples described herein, "stable" means exhibiting no more than 2% phase separation over 3 months at ambient temperature (about 21-25 ° C). According to this, the meaning of "unstable" is also determined.

These results show that in the absence of polymer the viscosity of the product is so high that it cannot be poured easily. It is clear that 4% or less of polymer can be stably contained in such a composition in which the polymer is only partially dissolved (see Table IV below). 3.5% of the polymer is completely dissolved in the reference composition II ₁ , the composition being already unstable.

These results show that the inclusion of the polymer reduces the viscosity (Composition III), but becomes unstable when the polymer (4.2%) is completely dissolved (pH ≦ 8.0). All of the above viscosities are lower than those listed in Tables I and II due to the absence of zeolite.

From this table, it is found that at a pH below 7.95 the polymer is totally dissolved as evidenced by the clear appearance. If the pH is greater than 7.95, the polymer is also present in the polymer-rich "insoluble" phase.

Example 2 The following composition of Table V was prepared. These compositions are listed in Table VI-
It had the stability and viscosity shown in VIII.

The parameter marked "var" was of varying value and the stability and viscosity measurement results are listed in Tables VI-VIII. In the examples described herein, "stable" means exhibiting no more than 2% phase separation over 3 months at ambient temperature (± 21-25 ° C). In line with this, “unstable”
Is also determined.

These results show that in the absence of polymer the viscosity of the product is so high that it cannot be poured easily. It is clear that at least 3.5% of polymer can be stably contained in such a composition (pH = 8.9) in which the polymer is only partially soluble (see Table IV above).
Although the polymer is completely dissolved in the standard composition of pH 7.8,
The composition is then already unstable at 3% polymer.

From this table, it is found that even when the polymer builder (2) is used, a reduction in viscosity is realized (thus increasing the ease of pouring) and the composition can be stably maintained. Under the conditions of composition VI (pH 8.4), the polymer builder (2) is only partially soluble.

These results show that the inclusion of the polymer decreases the viscosity (VIII-VII), but becomes unstable when the polymer (3.5%) is completely dissolved (pH ≦ 8.0).

Example 3 The following compositions of Table IX were prepared. These compositions are listed in Table X-
It had the stability and viscosity shown in XIII.

The parameter marked "var" was of varying value and the results of stability and viscosity measurements are listed in Tables X-XIII. In the examples described herein, "stable" means exhibiting no more than 2% phase separation over 3 months at ambient temperature (± 21-25 ° C). In line with this, “unstable”
Is also determined.

The parameter marked "var" was of varying value and the results of stability and viscosity measurements are listed in Tables X-XIII. In the examples described herein, "stable" means exhibiting no more than 2% phase separation over 3 months at ambient temperature (± 21-25 ° C). In line with this, “unstable”
Is also determined.

Table X shows that the addition of the "second" polymer reduces the viscosity drift, thus improving the ease of pouring the composition, especially after storage for a period of time.

This table shows that inclusion of the "second" polymer reduces viscosity while remaining stable. However, if the concentration of the "second" polymer is too high, the composition will be unstable (eg, using 0.6% of the "second" polymer (3)).

This table shows that the inclusion of the "second" polymer improves the ease of pouring of the composition due to the reduced viscosity and maintains good stability of the composition. However, if the concentration of the "second" polymer is too high, the composition may become unstable (especially if the concentration of the "second" polymer is 0.2%).

The table shows that the inclusion of 0.2 to 0.3% of the "second" polymer having a MW of 1,200 to 30,000 resulted in a significant decrease in viscosity, thus significantly improving the ease of pouring of the composition. Note that polymers with higher MW are somewhat more effective on a weight basis.

[Brief description of drawings]

FIG. 1 is a graph showing how a polymer dissolves in a liquid under different conditions.

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Claims (22)

[Claims] 1. A lamellar structural phase containing a cleaning active substance dispersed in an aqueous phase containing a dissolved electrolyte, polyethylene glycol, a polyacrylate, a polymaleate,
A liquid detergent composition comprising a viscosity-reducing polymer selected from polysaccharides, polysaccharide sulfonates and copolymers thereof, wherein only a portion of said polymer is dissolved in an electrolyte-containing aqueous phase. 2. A composition according to claim 1, characterized in that it exhibits less than 2% phase separation on storage for 21 days at 25 ° C. 3. The composition according to claim 1, which has a viscosity of ¹ Pas or less at a shear rate of 21 s ⁻¹ . 4. A liquid detergent composition which is stable, ie has a phase separation of less than 2% on storage for 21 days at 25 ° C., wherein the total amount of polymer contained is greater than the total amount of polymer in the reference composition. , Substantially above the maximum polymer amount of the reference composition,
That is, if more polymer is dissolved, the standard composition becomes unstable, that is, the phase separation of the standard composition becomes 2% or more when stored at 25 ° C. for 21 days. 4. Composition according to any one of claims 1 to 3, characterized in that at least one parameter is changed from that of the reference composition. 5. One or more parameters that vary from that of the reference composition selected from among the pH of the composition, the amount and nature of the electrolyte, and the amount and nature of the cleaning active. The composition according to. 6. The viscosity reducing polymer is an alkali metal salt of polyacrylic acid, polymethacrylic acid or maleic acid, or a copolymer containing an anhydride thereof, according to any one of claims 1 to 5. The composition according to item 1. 7. The composition according to claim 6, wherein the pH is above 8.0. 8. Composition according to claim 1, characterized in that it contains 0.5 to 4.5% by weight of a viscosity-lowering polymer. 9. Composition according to claim 8, characterized in that it comprises 1 to 3.5% by weight of a viscosity-lowering polymer. 10. A second polymer further comprising substantially all of which is soluble in the aqueous phase and having an electrolyte resistance of more than 5 g sodium nitrilotriacetate in 100 ml of a 5% by weight aqueous solution of the polymer. Then
The second polymer also has an average molecular weight in a 20% aqueous solution.
It has a vapor pressure not higher than that of a standard aqueous solution prepared by dissolving 2% by weight or more of polyethylene glycol having 6,000 in water, and the molecular weight of the second polymer is at least 1,000.
The composition according to any one of claims 1 to 9, wherein 11. Composition according to claim 10, characterized in that it comprises 0.05 to 20% by weight of the second polymer. 12. The second polymer has an average molecular weight of 1,200 to 3
Composition according to claim 10 or 11, characterized in that it is 0,000. 13. The composition according to claim 10, wherein the second polymer has an average molecular weight of at least 2,000. 14. The second polymer having an average molecular weight of 5,000 to 3
Composition according to any one of claims 10 to 13, characterized in that it is 0,000. 15. A cleaning active substance comprising a) a nonionic surfactant and / or a polyalkoxylated anionic surfactant, and b) a non-polyalkoxylated anionic surfactant. Item 15. The composition according to any one of items 1 to 14. 16. The composition according to claim 1, wherein the electrolyte is present in an amount of 1-60% by weight of the total composition. 17. A composition according to claim 1, wherein the viscosity-lowering polymer has builder properties. 18. A composition according to any one of claims 1 to 17, characterized in that it comprises a suspended solid particulate material. 19. The composition of claim 18, wherein the suspended solid particulate material comprises a water insoluble aluminosilicate salt. 20. The composition according to claim 18, wherein the suspended solid particulate matter contains the same electrolyte as all or part of the dissolved electrolyte. 21. The composition according to claim 18, wherein the suspended solid particulate material comprises a substantially water insoluble bleaching agent. 22. The composition of claim 21, wherein the bleaching agent comprises DPDA.