SK145799A3 - A liquid abrasive cleaning composition - Google Patents

Abstract

The invention provides a liquid abrasive cleaning composition of pH 7-13 which comprises: a) 0.1-20 wt.% of one or more surfactants forming a suspending system, b) 2-80 wt.% one or more suspended abrasives, c) 0.5-10 wt.% of a C2-C6 alkanolamine, and, d) 0.25-10 wt.% of a hydrocarbon co-solvent. The alkanolamine acts both as a base and a solvent which improves cleaning and so allows the level of suspended abrasive to be reduced so as to reduce the possibility of damage to surfaces and improve rinsing performance. It is believed that the presence of the hydrocarbon co-solvent is required to maintain the stability of the compositions at extremes of temperature.

Description

Liquid abrasive cleaner

Technical field

The invention relates to a liquid, homogeneous, abrasive aqueous solution of a detergent composition comprising abrasive particles suitable for cleaning hard surfaces.

BACKGROUND OF THE INVENTION

Hard surface cleaners containing abrasive particles are well known. Typical compositions consist of one or more surfactants in solution and a plurality of abrasive particles dispersed therein. Typical abrasive materials include minerals such as calcite or dolomite and other materials of high relative density. In this prior art, it is considered necessary to ensure that the abrasive particles remain in the formulation suspension so that the formulation does not need to be shaken vigorously prior to use and to prevent sedimentation or even precipitation of precipitated particles.

In one subset of compositions, one or more surfactant components serve as a suspending agent, usually in combination with dissolved electrolyte. The presence of the electrolyte causes the surfactant components to densify to form a layered phase. These compositions are generally formulated at pH 9.0, especially when calcite is used as an abrasive agent.

Surfactants containing alkylbenzene sulfonates, alcohol sulfonates, alcohol ethoxylates, alkylamidoethoxylates, fatty acid soaps and secondary alkyl sulfonates serve as suspending agents in liquid abrasive cleaners. The combination of these together with the electrolyte is used to form a suspending system known in the art.

The fine structure of these suspending systems is generally formed by spherical structures with a diameter in the range of about 0.05 to 10.0 µm. These structures are believed to contain concentric shells of alternating bilayers of molecules

The surface-active agent is separated from each other by thin aqueous layers. The suspending system is not the only structure that a surfactant can form in an aqueous environment. Said surfactants may also form micellar structures that are viscous but not capable of suspending the particles. In addition, compositions comprising surfactants and water can be divided into two or more mixed phases with different physical properties. The nature of the structure that is formed in the respective surfactant mixture is strongly influenced by the electrolyte ionic strength in the composition and some surfactant systems may be exceptionally sensitive to changes in the electrolyte ionic strength.

It is also known to use mixed suspending systems in which polymers are present. It is known that in such compositions a portion of the suspending activity of the products is due to the presence of polymers.

The basis, in any commercially available liquid abrasive cleaner, where the surfactant serves as a suspending system, is that the suspending system is stable to the full range of the recommended temperature and sufficiently keeps the abrasive particles in suspension throughout the shelf life of the product. When the ionic strength of the composition changes as a result of the temperature change, it is difficult to predict whether the added additives will disrupt the suspending system to such an extent that it stops the suspension of the particles in the temperature range to which the product is exposed. WO 94/05757 (Unilever) relates to a stable liquid abrasive cleaning composition comprising mixtures of a primary alcohol sulfate and alkoxylated nonionic surfactants in a specific range of ratios also containing from 1 to 20% dissolved electrolyte.

Another problem with liquid abrasive cleaners is their tendency to form residues that are difficult to remove by rinsing. This is a problem with compositions containing insoluble abrasives. Therefore, there is a need to improve the characteristics of the abrasive compositions in such a way that the overall level of abrasiveness is reduced so that the rinsing ability is improved and the possibility of surface damage by the abrasive substance is reduced.

Solvents are well known components of non-abrasive cleaning agents. Typical solvents used in cleaning agents include alcohols (ethanol), ethers (Butyl Cellosolve ™), paraffins (Isopar L ™), esters and terpenes (d-limonene). Another known class of solvents are alkanolamines. EP 503219 A (P&G) relates to a cleaning composition containing from 0.1 to 10% alkanolamine.

EP-A-0269178 (P&G) discloses the use of hydrocarbon solvents in liquid abrasive cleaners. These solvents are suitably combined with polar solvents such as partially water-soluble alcohols and diols and very water-soluble diethylene glycol ether solvents.

It is known to be difficult to incorporate an alkanolamine solvent into important components of a liquid abrasive cleanser. It is believed that alkanolamines have both electrolyte and solvent properties and can affect the structure of the suspending phase. Therefore, when the temperature of the composition changes during storage or transport, the effective electrolyte level in the composition will also change, which may result in disruption of the suspending phase and precipitation of abrasive particles or even separation of the individual phases in the composition.

SUMMARY OF THE INVENTION

SUMMARY OF THE INVENTION The present invention provides liquid abrasive cleaners having a pH of 7 to 13 which are formulated with significant levels of C 2 -C 6 alkanolamines that allow the presence of a hydrocarbon interacting solvent. The presence of alkanolamines is desirable because alkanolamines can act both as a solvent and as a base to aid in the removal of problematic impurities.

In this connection, the present invention provides a liquid abrasive cleaning composition having a pH of 7 to 13, comprising:

a) 0.1 to 20 wt. one or more surfactants forming a suspending system,

b) 2 to 80 wt. one or more suspended abrasives,

c) 0.5 to 10 wt. C2-C6 alkanolamines, a

4d) 0.25 to 10 wt. a hydrocarbon interaction solvent.

It is believed that alkanolamines behave both as a base and, at the same time, as a solvent, which improves purification, thereby reducing the level of suspended abrasives. On this basis, it is believed that the possibility of abrasive surface damage will be reduced and the rinsing ability will be improved. It is known that the presence of a hydrocarbon interacting solvent is desirable to maintain the stability of the alkanolamine-based composition when exposed to temperature changes or stored at extreme temperatures.

In order that the present invention may be readily understood, various advantageous and / or optimal properties of the components of the composition are described below.

Alcanolamines

For purposes of this invention, the alkanolamines present in the composition may be mono- or polyfunctional with respect to the amine moiety and the hydroxy moiety. Preferred alkanolamines are generally of the formula H 2 N-R'-OH, wherein R ¹ is a linear or branched alkyl chain of 2 to 6 carbon atoms. Preferred alkanolamines include:

2-amino-2-methyl-1-propanol, mono-, di- and triethanolamine, mono-, di- and triisopropanolamine, and dimethyl-, diethyl- or dibutylethanolamine.

It is understood that cyclic alkanolamines such as morpholine can also be used.

Particularly preferred alkanolamines include: 2-amino-2-methyl-1-propanol, monoethanolamine and diethanolamine. These substances are considered to improve cleaning performance against hard and old impurities. Of these, 2-amino-2-methyl-1-propanol is particularly preferred.

A typical proportion of aikanolamines in the composition of the invention is in the range of 1 to 5 wt. A higher solvent content is less desirable as the respective plastic packaging material could be damaged. Therefore, it is particularly preferred to use 2-amino-2-methyl-1-propanol in the range of 1 to 3 wt.

-5 Interaction solvents

Suitable interacting solvents include saturated and unsaturated, linear or branched hydrocarbons. Preferred substances are from the group of:

C10H16 terpenes, and

C10-C16 linear chain paraffins.

Particularly preferred terpenes are d-limonene. Particularly preferred paraffins include the material known under the trade name "Shellsol-T ™".

Typically the proportion of interacting solvents is from 0.5 to 5 wt. It is particularly preferred to use terpenes comprised from 1 to 3 wt. Some of these terpenes, for example limonene, have the additional advantage that they themselves or their impurities have a repellent effect. It is known that terpenes behave more suitably in a basic environment, at a pH lower than 11. Linear paraffins can also be used in a higher pH environment and are less aggressive to plastic materials. Paraffins behave more suitably in a pH environment of greater than 11.

It is preferred that the ratio of alkanolamines to hydrocarbon interacting solvents falls within the range of from 3: 1 to 1: 3, with a particularly preferred ratio of from 3: 1 to 1: 1.

Preferably, the interacting solvent may be present in the form of a perfume component, although the desired content of the interacting solvent will generally require the addition of a higher amount of this component that could normally be present as a perfume component in the cleaning compositions. In this sense, selected terpenes, such as limonene, which has a pleasant citrus aroma, are preferably used, the paraffins generally being odorless and odorless.

abrasives

The suspended, suspended particulate phase is an essential component of the compositions of the present invention.

Preferably, the dispersed, suspended particulate phase consists of abrasive particles that are insoluble in the aqueous phase. Alternatively, the abrasives may be soluble and present in excess so that they form a supersaturated solution in the aqueous phase and are therefore precipitated, i. j. present in the device.

The preferred abrasives used in the general purpose formulation have a Mohs hardness scale of less than 6, although a higher hardness of the abrasives may serve special applications. Substances with lower hardness generally cause less surface damage.

Suitable abrasives may be selected from the group of appropriate zeolites, calcites, silicas, silicates, carbonates, aluminates, bicarbonates, borates, sulfates, and polymeric materials such as polyethylene.

The preferred average (average weight) particle size for the abrasives is in the range of 0.5 to 200 µm, with values preferably around 10 to 100 µm. Within this range of values, an acceptable compromise is achieved between good cleaning performance and low surface damage. .

The preferred abrasive content is from 5 to 70% by weight. per product, preferably from 20 to 40 wt%, more preferably more than 30 wt%. Such abrasive content will ensure effective cleaning and good rinsing ability of the composition.

The most preferred abrasives are calcium carbonate, in the form of calcite, a mixture of calcium and magnesium carbonates, in the form of dolomite, sodium bicarbonate, potassium sulfate, zeolite, aluminum oxide, aluminum hydroxide, feldspar, talc and silica.

Calcite and dolomite are particularly preferred because of their low cost, suitable hardness and color.

Surfactants

The composition of the invention comprises detergent agents that are generally selected from both anionic and nonionic detergent groups.

Preferred active anionic detergents are the water-soluble salts of organic sulfur reaction products having a C8-C22 alkyl radical and a radical selected from the group of sulfonic acid or sulfuric ester esters and mixtures thereof in the molecular structure.

Examples of suitable anionic detergents are sodium and potassium alcohol sulphate, especially those obtained by sulphating higher alcohols produced by reducing tallow glycerides or coconut oil; sodium and potassium alkylbenzenesulfonate, such wherein the alkyl group contains from 9 to 15 carbon atoms; secondary

-7 sodium and potassium alkanesulfonate; sodium alkyl glyceryl ether sulfate, especially ethers of higher alcohols derived from tallow and coconut oil; sodium coconut acid monoglyceride sulfate; sodium and potassium salts of sulfuric acid esters, obtained by reacting one mole of a higher fatty alcohol and 1 to 6 moles of ethylene oxide; sodium and potassium salts of alkylphenolethylene oxide ether sulfate having 1 to 8 units of ethylene oxide molecule and wherein the alkyl radicals contain 4 to 14 carbon atoms; a reaction product of fatty acid esterification with isethionate (2-hydroxyethanesulfonic acid) and neutralized with sodium hydroxide, wherein the fatty acids are obtained, for example, from coconut oil and mixtures thereof.

Preferred water-soluble synthetic active anionic detergent compositions are salts of higher alkylbenzene sulfonates of alkali metals such as sodium and potassium, and alkaline earth metals such as calcium and magnesium, and mixtures of olefin sulfonates, higher alkyl sulfonates, and higher fatty acid monoglyceride sulfates. Most preferred effective anionic detergent compositions are higher alkyl aromatic sulfonates such as higher alkylbenzene sulfonate with a C ₆ -C 20 alkyl group in a linear or branched chain, especially examples where the sodium salts of higher alkylbenzenesulfonates or higher alkylthiolenesulfonates, sulfonates, sulfonates, sulfonates, sulfonates, sodium.

The amount of synthetic effective anionic detergent present in the detergent composition of the present invention is generally from 1 to 25 wt%, preferably from 2 to 20 wt%. and most preferably from 2 to 15 wt.%.

A preferred effective nonionic detergent composition may generally be described as being made by condensing alkylene oxide groups that are naturally hydrophilic with an organic hydrophobic compound, which may be aliphatic or alkyl aromatic in nature. The length of the hydrophilic or polyoxyalkylene radical, which is condensed with any particular hydrophobic group, can readily be adapted to form a water-soluble compound having the desired degree of equilibrium between hydrophilic and hydrophobic elements.

Particular examples include the condensation product of aliphatic alcohols having 8 to 22 carbon atoms in any linear or branched configuration

An ethylene oxide chain such as coconut ethylene oxide condensate consisting of 2 to 15 moles of ethylene oxide per mole of coconut alcohol; condensates of alkylphenols having an alkyl group of from 6 to 12 carbon atoms with 5 to 25 moles of ethylene oxide per mole of alkylphenol; condensates of the reaction product of ethylenediamine and propylene oxide with ethylene oxide, condensates containing from 40 to 80 wt. polyoxyethylene radicals and having a molecular weight of from 5,000 to 11,000; tertiary amine oxides having the structure R ₃ NO, wherein one R group is an alkyl group of 8 to 18 carbon atoms and the other two are each methyl, ethyl or hydroxyethyl, for example dimethyldodecylamine oxide; tertiary phosphine oxides having the structure R 3 PO, wherein one R group is an alkyl group having 10 to 18 carbon atoms and the other two are each an alkyl or hydroxyalkyl group having 1 to 3 carbon atoms, for example, dimethyldodecylphosphine oxide; and dialkyl sulfoxides having the structure of R2SO, wherein one R group is an alkyl group of 10 to 18 carbon atoms and the other is methyl or ethyl, for example methyltetradecylsulfoxide; fatty acid alkyiolamides; condensates of alkylene amide of alkylolamides and alkyl mercaptans of fatty acids.

The amount of active nonionic detergent present in the detergent composition of the present invention is generally from 0.5 to 15 wt%, preferably from 1 to 10 wt%, and most preferably from 1 to 8 wt%.

Preferably, the compositions comprise both effective anionic and nonionic detergents, taking into account the level of electrolyte present to form a structured liquid detergent composition, for example one that is itself sufficiently dense, without the addition of thickeners.

The weight ratio of active anionic and nonionic detergents may vary and will depend on their nature, but the preferred ratio is in the range of from 1: 9 to 9: 1, ideally from 1: 4 to 4: 1.

According to a preferred embodiment which illustrates this aspect of the invention, the detergent compositions will contain from 2 to 10 wt. % water-soluble synthetic anionic sulfated or sulfonated detergent salts containing an alkyl radical of 8 to 22 carbon atoms per molecule, and from 0.5 to 8 wt. alkyleneoxylated nonionic detergent obtained by aliphatic condensation

- an alcohol having 8 to 22 carbon atoms in the ethylene oxide molecule such that the condensate contained from 2 to 15 moles of ethylene oxide per mole of aliphatic alcohol.

It is also possible to include effective amphoteric, cationic or zwitterionic detergents in the composition of the invention.

Suitable active amphoteric detergents which could also be included are derivatives of aliphatic secondary and tertiary amines having an alkyl group of 8 to 18 carbon atoms and an aliphatic radical substituted with a water-soluble anionic group, for example sodium 3-dodecylaminopropionate, 3-dodecylaminopropanesulfonate sodium and sodium Ν-2-hydroxydodecyl-N-methyltaurate.

Suitable active cationic detergents are quaternary ammonium salts which contain an aliphatic radical of 8 to 18 carbon atoms, for example cetyltrimethylammonium bromide.

Suitable active zwitterionic detergents which could also be included are derivatives of aliphatic quaternary ammonium, sulfonium and phosphonium compounds consisting of an aliphatic radical of 8 to 18 carbon atoms and an aliphatic radical substituted with an anionic water-soluble group, for example 3- (N, N -dimethyl-N-hexadecylammonium) propane-1-sulfonate-betaine, 3- (dodecylmethylsulfonium) propane-1-sulfonate betaine and 3- (cetylmethylphosphonium) ethanesulfonate betaine.

Other examples of suitable effective detergent compositions are those generally used as surfactants, as disclosed in the known textbooks "Surface Active Agents" Vol. I, Schwartz and Perry and "Surface Active Agents and Detergents, Vol. II, Schwartz, Perry and Berch.

The total amount of active detergents present in the detergent composition of the present invention is generally from 1.5 to 30 wt%, preferably from 2 to 15 wt%.

An important feature of the invention is that the composition is capable of stably suspending the abrasive particles such that the customer does not need to mix the composition prior to use, for example by shaking it to resuspend and redistribute the deposited particles evenly. For this reason, the composition should have a viscosity at 200 ° C of at least 5000 Pa.s, at a shear force gradient of 3.10 ⁵ s ^-1 (as

-10 is given in the Stokes Law). Such a viscosity is generally sufficient that the abrasive particles do not settle more than 1 cm per month when stored in an upright position at 200 ° C.

The composition of the present invention should remain sufficiently fluid to be readily dispensed from a bottle or other container in use. For this purpose, the composition should have a viscosity at 200 ° C as measured by a rotary viscometer that does not exceed 10 Pa.s at a shear force gradient of 21 s ^-1 . Preferably, the viscosity at 200 ° C is not more than 5 Pa.s at a shear force gradient of 21 s ^-1 .

Appropriate rheological conditions that meet the above criteria can be maintained by impartial selection of anionic and nonionic detergent to provide the desired structure with the necessary suspending properties and / or by using an appropriate amount of an alternative structural agent well known in the art.

polymers

The compositions of the invention may also contain polymeric structuring agents to help provide the necessary rheological properties to maintain a uniformly spaced insoluble salt or salts in the composition and optionally improve the disposition and adhesion of the composition to the cleaned solid surfaces.

Preferred structural agents include polysaccharides such as sodium carboxymethylcellulose or other chemically modified cellulosic materials, xanthan gum, and other non-flocculating structural agents such as PS87 Biopolymer, cited in U.S. Patent No. 5,201,549. Certain polymers such as an acrylic acid polymer crosslinked with a polyfunctional agent, for example, CARBOPOL®, can also be used as structural agents. The amount of such structural agents, when used in the compositions of the present invention, may be about 0.001% by weight, preferably at least 0.01% by weight.

In general, the composition of the invention may optionally contain from 0.1 to 1% of a polymer.

Optional additives

The composition of the invention may contain other ingredients that improve cleaning performance. For example, the composition may contain detergent builders other than the special water-soluble salts as mentioned above, such as nitrilotriacetates, polycarboxylates, citrates, dicarboxylic acids, water-soluble phosphates, especially polyphosphates, mixtures of ortho- and pyrophosphates, zeolites, and mixtures thereof . These activating additives may have an additional function as abrasives if they form a supersaturated solution. Generally, the activating additives other than the specially water-soluble salts preferably comprise from 0.1 to 25 wt. means.

Metal ion sequestrants, such as ethylenediaminetertraacetates, aminopolyphosphonates (DEQUEST®) and phosphates, and various amounts of other polyfunctional organic acids and salts, may be present and serve similarly to abrasives as they are interchangeable with them.

A further optional additive to the composition of the present invention is a suds controlling agent that may be present in the composition of the present invention, which in use tends to over-foam. One example of a suds controlling agent is soap. Soaps are fatty acid salts and include alkali metal soaps such as sodium, potassium and ammonium salts of higher fatty acids having 8 to 24 carbon atoms, and preferably 10 to 20 carbon atoms. Particularly suitable are the sodium, potassium and mono-, di- and triethanolamine salts of the fatty acid mixtures obtained from coconut oil and peanut oil. When present, the amount of soap may comprise at least 0.005% by weight, preferably from 0.5 to 2% by weight. means. Fatty acid soaps such as Prifac 7901 ™ are considered suitable for this purpose.

Another example of a suds controlling agent is silica or silicone oil. Where the hydrocarbons of the present invention are present in a sufficiently high concentration, they may themselves act partially or fully as antifoams.

The compositions of the present invention may comprise, in addition to the aforementioned additives, a variety of other optional ingredients, such as colorants, bleaches, optical brighteners, soil suspending agents, detersive enzymes, compatible bleaching agents, especially oxosol halides with the lowest oxidation number, gel regulating agents, other temperature

Stabilizers, bactericides, preservatives, for example 1,2-benzisothiazolin-3-one, and hydrotropes.

pH

The compositions of the invention are formulated in an alkaline pH environment and generally have a pH of from 9.5 to 12.5, preferably from about 10 to 12, when calcite is used as an abrasive. When other abrasives are used, the pH may be lower, but the pH should generally be above (pK _and alkanolamine) -1 and preferably be higher than pK _and alkanolamine.

Alkalizing agents such as sodium hydroxide and sodium carbonate and acids such as hydrochloric acid can be used to adjust and buffer the desired PH.

Advantageous compositions of compositions

Preferred compositions according to the invention consist of:

a) 1 to 5 wt. alkali metal carbonate and / or bicarbonate,

b) 1 to 5 wt. alkyl benzene sulfonate,

c) 0 to 1 wt. fatty acids,

d) 1 to 3 wt. an ethoxylated alcohol nonionic surfactant,

e) 0.5 to 2.0 wt. alkanolamines selected from the group consisting of: 2-amino-2-methyl-1-propanol, mono-, di- and triisopropanolamine, dimethyl-, diethyl or dibutylethanolamine and mixtures thereof,

f) 0.5 to 2.0 wt. interacting solvents selected from the group consisting of: C ₁₀ H ₆ terpenes, C ₁₀ -C ₁₆ linear paraffins, and mixtures thereof,

g) 20 to 40 wt. abrasives selected from the group consisting of: calcium carbonate, magnesium carbonate, zeolite, alumina, aluminum hydroxide, feldspar, talc, silica and mixtures thereof, and

h) 0.1 to 2.0 wt. perfume ingredients other than terpenes, with an equilibrium composition of minor ingredients and water.

To further understand the invention, it will be further illustrated by the following examples.

13 Examples

The examples were performed using the following basic ingredients (as shown in Table 1) with different solvent compositions as presented in Table 2. The compositions were prepared at pH 10 and 12 as shown in Table 1.

Table 1

Basic component pH 10 pH 12 Sodium carbonate 3,13% 3,13% Sodium bicarbonate 0.53% 0.53% calcite 35.0% 35.0% (OMY Acarb 30-AV: TM ex. OMYA) alkyl benzene sulfonate 3.0% 3.0% (Petrelab 550: TM ex. Petresa) Coconut acid 0.48% 0.48% (Prifac 7901: TM ex.Unichema) Non-ionic 7EO 1,5% 1.5% (Dobanol 23 - 6.5EO: TM ex. Shell) Hydrochloric acid 0.26% (2M ex. Fisons) Sodium hydroxide - 0.42% 1,2-benzisothiazolin-3-one 0.016% 0.016% (Proxel GXL: TM ex. ICI) perfumes 0.5% 0.5% (CLO318A: TM ex. Quest) Water up to 100% up to 100%

Using the ingredients of Table 1, the examples of Table 2 below were supplemented by the addition of a total of 2% solvent that was 2% aminomethylpropanol (AMP) or 1% aminomethylpropanol plus the interacting solvent. The stability of the formulations was tested over 5 weeks of storage under ambient conditions and various modified temperature conditions.

Modified temperature conditions are as follows:

(a) 10 freeze-thaw cycles of less than -15 ° C for 16 hours and 25 ° C for 8 hours;

(b) 5 weeks storage at 4 ° C;

(c) 5 weeks storage at 37 ° C;

Negative results in the columns labeled 'temp' in Table 2 indicate that the samples were split into two or more phases during storage at least

-14 one of the modified temperature conditions. Negative results in the 'ambi' columns in Table 2 indicate that the samples were divided into two or more phases during storage at ambient conditions. Examples with Shellsol T and limonene are the essence of the invention, examples with benzyl alcohol, Butyl Digol ™ (diethylene glycol mono-n-butyl ether) and Dowanol PnB ™ (propylene glycol mono-n-butyl ether) are comparable and show that not all solvents are suitable for practical use according to the invention.

Table 2

means pH10 ambi pH10 temp pH12 ambi pH12 temp Basic components + 2% AM P Positive. Negative. Positive. Negative. Basic ingredients + 1% AMP + ShelISol T Positive. Positive. Negative. Negative. Basic ingredients + 1% AMP + 1% limonene Negative. Negative. Positive. Positive. Basic ingredients + 1% AMP + 1% Dowanol PnB Positive. Negative. Negative. Negative. Basic ingredients + 1% AMP + 1% benzyl alcohol Negative. Negative. Positive. Negative. Basic ingredients + 1% AMP + 1% butyldigol Negative. Negative. Negative. Negative.

From the above results, it can be seen that stable formulations at pH 10 can be prepared using paraffin (ShelISol T) as an interaction solvent. At higher pHs, limonene was effective as an interaction solvent. Both formulations containing ShelISol T and limonene showed acceptable cleaning performance under severe soiling. Compositions containing Dowanol PnB, benzyl alcohol and butyldigol showed instability under one or more storage conditions other than the surrounding environment.

Claims (8)

A liquid abrasive cleaning composition having a pH of 7 to 13, characterized in that it comprises: a) 0.1 to 20 wt. one or more surfactants which form a suspending system, b) 2 to 80 wt. one or more suspended abrasives, c) 0.5 to 10 wt. C 2 -C ₆ alkanolamine, a d) 0.25 to 10 wt. a hydrocarbon interaction solvent. The composition according to claim 1, wherein the alkanolamine is selected from the group consisting of 2-amino-2-methyl-1-propanol, mono-, di- and triethanolamine, mono-, di- and triisopropanolamine, dimethyl- , diethyl or dibutylethanolamine and mixtures thereof. The composition of claim 1, wherein the interacting solvent is selected from the group consisting of CwHie terpenes, C10-C16 linear chain paraffins, and mixtures thereof. Composition according to claim 1, characterized in that the abrasives are selected from the group consisting of calcium carbonate, magnesium carbonates, zeolite, alumina, aluminum hydroxide, feldspar, talc, silica and mixtures thereof. r The composition of claim 1, wherein the ratio of alkanolamines to hydrocarbon interaction solvent ranges from 3: 1 to 1: 3. Composition according to claim 1, characterized in that the abrasive content is from 20 to 40% by weight. product. -167. The composition according to claim 1, characterized in that its viscosity according to Stokes law is at least 5000 Pa.s at 200 ° C, at a shear force gradient of 3.10 ' ⁵ s ^-1 and its viscosity at 200 ° C measured with a rotary viscometer does not exceed 10 Pa.s at a shear force gradient of 21 s * ¹ . The composition of claim 1, wherein its pH is from 9.5 to 12.5. A composition according to claim 1, comprising: a) 1 to 5 wt. alkali metal carbonates or bicarbonates, b) 1 to 5 wt. alkylbenzénsolfonátov. c) 0 to 1 wt. fatty acids, d) 1 to 3 wt. an ethoxylated alcohol nonionic surfactant, e) 0.5 to 2.0 wt. alkanolamines selected from the group consisting of: 2-amino-2-methyl-1-propanol, mono-, di- and triethanolamine, mono-, di- and triisopropanolamine, dimethyl-, diethyl- or dibutylethanolamine and mixtures thereof, f) 0.5 to 2.0 wt. interacting solvents selected from the group consisting of: C ₁₀ H ₆ terpenes, C 10 -C ₁₈ linear chain paraffins, and mixtures thereof, g) 20 to 40 wt. abrasives selected from the group consisting of: calcium carbonate, magnesium carbonates, zeolite, aluminum oxide, aluminum hydroxide, feldspar, talc, silica and mixtures thereof, and h) 0.1 to 2.0 wt. perfume ingredients other than terpenes, with an equilibrium composition of minor ingredients and water.