JPH01304191A - Liquid detergent composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION 1. L1 The present invention consists of 1. Pourable homogeneous material suitable for use in hand washing tableware, crockery, cutlery and pots, as well as in cleaning other hard surfaces such as plastic laminates, glass and ceramic tiles. It relates to aqueous liquid detergent compositions, particularly compositions containing water-soluble particulate abrasives.

1 breath Δ11 Liquid detergent compositions for cleaning hard surfaces are generally divided into two types. The first type is an aqueous suspension containing palpable water-insoluble abrasive particles.

This type of composition can cause problems when rinsing hard surfaces cleaned with this crude product with water, as it can be difficult to completely remove insoluble particles of abrasive from the surface. The second type is a liquid detergent composition that usually contains soap, a nonionic surfactant, and an alkylbenzene sulfonate, and is free of palpable abrasive particles.

Although liquid detergent compositions of the second type do not have the problem of bruising during use, they do have some drawbacks that make them less acceptable to consumers. For example, because it does not contain abrasives, it has limited ability to remove stubborn stains, especially in areas where water is hard. It also lacks homogeneity and has a tackiness that is less than ideal for consumer use. Furthermore, since it is necessary to increase the concentration of surfactant required to remove oil and fat stains,
Excessive foaming may occur. The user must rinse and wipe off this suds. Excessive foaming can be caused by solvent,
The degree of foaming can be controlled by incorporating hydrophobic silicas and/or silicones or foaming agents such as soaps, but this reduces the stability and homogeneity of the product, as well as the problems associated with cleaning. Problems can arise with insoluble residues adhering to objects or surfaces that leave marks after drying.

U.S. Patent No. 4,057,506 (ColgaLe l
'aμmolive Company) takes into account that the composition is substantially free of solid particulate bilgoux salt and therefore has a smooth and creamy condition.
It has been proposed to use builder salts such as water-soluble phosphates, silicates, borates, carbonates, bicarbonates or citrates in heavy duty liquid detergent compositions. This Colgate Palmolive composition is characterized in that all bilgoo beef salts present in solid form have a particle size <11
1, usually <0.1. The fact that it is a colloidal size particle is essentially 1G'61. Although the builder-acting salt particles having the above-mentioned size can function as a builder, they are too small to be used as an abrasive. Such compositions have no abrasive ability and are therefore ineffective in cleaning heavily soiled hard surfaces.

In CB-8-1370377 it was proposed to incorporate water-soluble salts into essentially non-aqueous liquid compositions. In this case, since the salt does not dissolve, it can act as an abrasive.

Also, EP-Δ-0.193,375 (tlnilev
In er), a water-soluble salt such as sodium bicarbonate is suspended in an aqueous detergent composition in the form of undissolved particles with an average particle size of 10 to 500 μm to obtain a composition suitable for cleaning hard surfaces. It was suggested that. Although the sodium bicarbonate is sized to be suitable for IR performance as an abrasive, this prior art composition still has a low tendency to redeposit dirt and leaves no 'mark' on cleaned surfaces. There is little or nothing left. The reason is apparently that residual particles of sodium bicarbonate can dissolve in the excess amount of water used to rinse the cleaning surface.

However, as a result of experiments, sodium bicarbonate
Although exhibiting excellent cleaning performance when used as described in 0.193,375, compositions containing sodium bicarbonate usually have a sticky feel and are therefore difficult to clean, such as utensils, cutlery and pots, with ungloved hands. When used to clean hard surfaces, it presents an unpleasant illusion on the skin that tempts the user to seek out another product.

Testing has shown that this undesirable property is caused by the alkaline pH of the composition having a pif of 8.5 or higher. This pH value is unavoidable when sodium bicarbonate is used in sufficient quantities to act as the only water-soluble abrasive.

The inventors investigated a variety of materials in an effort to develop new abrasives that have water solubility and abrasive properties similar to sodium bicarbonate, yet do not exhibit the undesirable properties associated with this type of product.

The results showed that potassium sulfate has the desired polishing properties and water solubility, and can be incorporated into stable products with neutral or slightly acidic pH. Such products surprisingly do not have any of the unpleasant and unpleasant feel characteristics associated with similar products containing sodium bicarbonate.

1M3L to 1 discharge Therefore, in addition to water, the present invention provides i) a cleaning agent (dete
and ii) a water-soluble salt, at least a portion of which is potassium sulfate, present in dissolved and undissolved states, and the undissolved portion of the potassium sulfate has an average particle size of 10 to 500 μm. A flowable homogeneous abrasive aqueous detergent composition having the following properties is provided. This composition has a pH value p) below 18 and an apparent viscosity at 20°C of 6500 Pas at a shear rate of 3x 10-5 sec-'.
The above is 10 Pas or less at a shear rate of 21 sec-'.

The compositions of the present invention are suitable for manual dishwashing and/or cleaning of other hard surfaces.6 The compositions of the present invention can generally be used for both of the above applications, and therefore are usually suitable for both applications.
Although it is not suitable, it can be said that it is a dual product.
The compositions of the invention may be formulated as products primarily suitable for manual dishwashing, with a high proportion of cleaning agents and a low proportion of abrasives. The compositions of the invention can also be formulated as products primarily suitable for cleaning fixed hard surfaces and removing stubborn soils, with a high proportion of abrasive and a low proportion of cleaning active substances.

The compositions of the invention include a cleansing agent. The second substance is suitably selected from synthetic anionic cleansing substances, and in some cases may also be selected from nonionic cleansing substances.

Suitable synthetic anionic detergent compounds are water-soluble salts of organic sulfur reaction products containing in their molecular structure an alkyl group having from 8 to 22 carbon atoms and a group selected from sulfonic acid or sulfate ester groups. , as well as mixtures thereof. Specific examples of synthetic anionic detergents include sodium alkyl sulfate and potassium alkyl sulfate, especially those obtained by sulfating higher alcohols produced by reducing tallow or coconut oil glycerides; 15
Sodium alkylbenzenesulfonates and potassium alkylbenzenesulfonates; Sodium glyceryl ether sulfates, especially ethers of higher alcohols derived from tallow and coconut oil; Coconut oil fatty acid monoglycerides sodium sulfate; Higher fatty alcohols 1
Sodium and potassium salts of sulfuric acid esters of reaction products of 1 to 6 moles of ethylene oxide; alkylphenol ethylene oxide ether sulfates in which 1 to 8 units of ethylene oxide molecules are present and the alkyl group contains 4 to 14 carbon atoms; Sodium and potassium salts of phates; for example, the reaction products of fatty acids derived from coconut oil esterified with isethionic acid and neutralized with I-lium hydroxide, and mixtures thereof.

Preferred water-soluble synthetic anionic detergent compounds include ammonium and substituted ammonium (such as mono-, di-, and tri-ammonium) higher alkyl benzene sulfonates, higher alkyl sulfonates, higher alkyl alpha-olefin sulfonates, higher alkyl sulfates, and higher alkyl ether sulfates. ethanolamine), alkali metal salts (e.g. sodium and potassium salts) and alkaline earth metal salts (e.g. calcium and magnesium salts),
and mixtures thereof. Higher alkyl aromatic sulfonates, especially those containing 6 to the alkyl group in the straight or branched chain.
or higher alkylbenzene sulfonates containing from 8g to 20 or 22 carbon atoms.

Particularly preferred anionic cleansing agent mixtures include (i)
(ii) a mixture of sodium alkylbenzene sulfonate and sodium lauryl ether sulfate (2EO to 8EO); and (ii) a mixture of sodium secondary alkyl sulfonate and sodium lauryl ether sulfate.

The amount of anionic detersive agent used in the detergent compositions of the present invention is usually from 1 to 40%, preferably from 2 to 25%, most preferably from 2 to 20% by weight.

Suitable nonionic detersive compounds can broadly be referred to as compounds formed by condensing a hydrophilic alkylene oxide group with an organic hydrophobic compound which may be aliphatic or alkyl aromatic.

The length of the hydrophilic group, ie, the polyoxyalkylene group, to be condensed with any particular hydrophobic group can be easily adjusted to obtain a water-soluble compound in which the hydrophilic and hydrophobic elements are present in the desired balance. .

Specific examples include condensation products of aliphatic alcohols having 8 to 22 carbon atoms in a linear or branched chain structure and ethylene oxide, such as coconut oxidized ethylene condensates containing coconut alcohol; alkyl Group is 6-1
Condensates of alkylphenols containing 2 carbon atoms with 5 to 25 moles of ethylene oxide per mole of alkylphenols; condensates of ethylene oxide with the reaction product of ethylenediamine and the acid 1-hypropylene, wherein polyoxyethylene Contains 40 to 80 groups and 1% by weight and has a molecular weight of 5
,000 to 11,000; a condensate of the formula R, NO [wherein one of the groups R is an alkyl having 8 to 18 carbon atoms, and the remaining groups are each a methyl group, an ethyl group, or a hydroxyethyl group; tertiary amine oxides of the formula R, r'o [one of the R groups is an alkyl group having 10 to 18 carbon atoms, and the remaining groups each have 1 to 18 carbon atoms; -3 alkyl or hydroxyalkyl group], such as dimethyldodecylphosphine oxide;
is an alkyl group with the remainder being methyl or ethyl]
Dialkyl sulfoxides represented by, for example, methyltetradecyl sulfoxide; fatty acid alkylolamides; and alkylene oxide condensates of fatty acid alkylolamides and alkyl mercaptans are exemplified.

Mixtures of two or more nonionic detergent agents may also be used in the detergent compositions of the present invention.

The amount of nonionic detersive agent that may optionally be used in the detergent compositions of the present invention is usually 0.5 to 15% by weight, preferably 1% by weight.
-10% by weight, most preferably 1-8% by weight.

If both anionic and nonionic cleansing agents are used, the weight ratio of anionic to nonionic cleansing agents can be varied, but is preferably from 1:9 to It should be in the 9:1 range, ideally in the 1:4 to 4:1 range.

The compositions of the invention preferably contain both the anionic cleaning agent and the nonionic cleaning agent that are structured, i.e., self-thickening without the use of thickeners. (self-thickened) liquid detergent composition in an amount selected to provide a self-thickened liquid detergent composition.

The detergent composition of the invention according to this embodiment comprises, for example, 2 water-soluble synthetic anionic sulfated or sulfonated detergent salts (deLergent 5alt) containing alkyl groups having 8 to 22 carbon atoms in the molecule. An aliphatic alcohol containing ~16% by weight and having 8 to 22 carbon atoms in the molecule is condensed with ethylene oxide to obtain a condensate containing 2 to 15 moles of ethylene oxide per mole of aliphatic alcohol. 0.5 to 4% by weight of an alkyleneoxylated nonionic detergent derived by.

The compositions of the invention may also optionally include amphoteric, cationic or zwitterionic cleansing agents.

Suitable amphoteric detersive compounds which may optionally be used are derivatives of aliphatic secondary and tertiary amines containing an alkyl group having from 8 to 18 carbon atoms and an aliphatic group substituted with an anionic water-solubilizing group. , such as sodium 3-dodecylaminopropionate, sodium 3-dodecylaminopropanesulfonate and sodium N-2-hydroxydodecyl-N-methyltaurate.

Suitable cationic cleansing compounds have 8 to 18 carbon atoms.
Quaternary ammonium salts with aliphatic groups such as cetyltrimethylammonium bromide.

Suitable zwitterionic detersive compounds which may optionally be used include aliphatic quaternary ammoniums having an aliphatic group having from 8 to 18 carbon atoms and an aliphatic group substituted with an anionic water-solubilizing group; derivatives of sulfonium and phosphonium compounds,
For example, 3-(N,N-dimethyltohexadecyl ammonium)propane-1-sulfonate betaine, 3-(
dodecylmethylsulfonium)propane-1-sulfonate betaine and 3-(cetylmethylphosphonium)ethanesulfonate betaine.

Suitable cleaning companion compounds further include the known Schwa
“5surface Activ” by rtz and perry
e A8ents''.

Vol.1. , and Schwartz, Perry
and “5surface Active A” by Berch.
gents and DetergenLs”Vo, I
Examples include compounds generally used as surfactants, such as those described in Section I.

The total amount of detergent compounds used in the detergent composition of the present invention is usually 1 to 40% by weight, preferably 1.5 to 30% by weight,
More preferably, it is 2 to 20 or 25% by weight.

Water - The compositions of the present invention further include at least one water-soluble salt, namely potassium sulfate, which can function as an abrasive. The salt is used in an amount that exceeds its saturation solubility and will therefore be present in the composition in both dissolved and undissolved states. The composition of the invention therefore comprises a saturated aqueous solution of potassium sulfate and said salt in solid phase form corresponding to 0.5 to 60% by weight, more preferably 1 to 50% by weight of the composition at 20<0>C. This solid phase has an average particle size of 10 to
It consists of particles of 500 um, preferably 20-300 pn+.

The water-soluble salt, i.e., potassium sulfate, is anhydrous, and the temperature between 10°C and
If present as a crystalline solid in water at 40° C. in an amount greater than that required to form a saturated solution, it will not convert to a hydrate.

The saturated solubility of the salt in water at 40°C is less than twice the saturation solubility in water at 10°C. These properties have the effect that the characteristics of the product, particularly the size, shape and quantity of the crystalline abrasive particles, do not vary significantly over the typical operating temperature range, and therefore the performance of the product is also uniform.

The said properties of potassium sulfate also make the composition self-structuring (
self 5structured), i.e. when a structure exhibiting the desired viscosity properties is obtained by appropriate selection of one or more anionic detergent agents or anionic and nonionic detergent agents. It also has the effect of stabilizing the viscosity without causing a substantial change in viscosity.

Potassium sulfate, a water-soluble salt, has a Mohs hardness of about 3 and therefore exhibits effective abrasive properties. Since the saturation solubility of potassium sulfate in water at 10° C. does not exceed 15 wt., a reasonable total of 3 amounts of undissolved particles can be present.

The salt also exhibits a water solubility of greater than 5g71 at 10°C, allowing excess salt to be easily rinsed off from hard surfaces cleaned with the composition. Therefore, no traces remain on the surface.

The content of potassium vR acid in the detergent composition of the present invention is preferably 2 to 65% by weight, more preferably 4 to 55% by weight, ideally 7 The compositions of the present invention contain this water-soluble salt in the form of solid particles having an average particle size and other characteristics as described herein, depending on the required abrasive content, from 10 to 50% by weight. 0.0C at typical storage or use temperatures of 40'C to 40'C.
It is necessary to contain 5 to 60% by weight, more preferably 1 to 50% by weight.

The compositions of the present invention may contain water-soluble salts other than potassium sulfate, such as sodium bicarbonate, sodium chloride, the salt monohypotassium,
Magnesium chloride, salts (hycalcium, sodium tripolyphosphate, Itsukiwazate, lithium tetraborate + hydrate, and thorium citrate may also optionally be included, provided that the pl+ of the composition should not exceed 8). Under this condition,
Additional water-soluble inorganic salts of lithium, magnesium, sodium, potassium, and calcium may be used (such as those available from Bosalt et al.).

These salts can act as builders and abrasives. Specific examples include sulphurium oxalate, sodium succinate, sodium adipate, and sulphurium glutarate. Mixtures of these salts can also be used. Preferably, an electrolyte is present which can slightly reduce the water solubility of potassium sulfate. In that case, it is particularly suitable to use alkali metal chlorides, preferably salts, in amounts of 0.5 to 5% by weight of the composition, or more, up to 10%. In this way, the water solubility of the potassium sulfate is slightly reduced, thereby reducing the amount of potassium sulfate needed to obtain a suitable amount of undissolved particles. The solubility of potassium sulfate is 5g, #! This makes it easy to remove excess salt from hard surfaces after cleaning.

The presence of electrolytes, particularly sodium chloride, is also advantageous in improving the freeze-thaw stability of the product.

In a particularly advantageous method, other electrolytes are also added in addition to the alkali metal chloride. This further electrolyte is preferably an alkali metal citrate, such as sodium citrate, and the pH
It is useful for adjusting the

The total amount of water-soluble salts including potassium sulfate is 9% by weight of the composition
It is preferable to do the above. This amount can be determined in the range 9-50% by weight.

Waterworks The composition of the present invention further comprises water. The amount is 30% of the composition
~89.5% by weight, preferably 40-80% by weight, ideally 45-70% by weight.

Compositions of the present invention may also contain other ingredients that aid in cleaning performance. However, the presence of these components should not cause the pH of the composition to exceed 8.

For example, compositions of the invention may include nitrilotriacetate,
Detergent builders such as polycarboxylates, citrates, dicarboxylic acids, water-soluble phosphates, especially polyphosphate-1-, mixtures of orthophosphates and pyrophosphate-1, and mixtures of these substances may be included. These builders can also function as abrasives when used in excess of their solubility in the overall composition, as described in the present specification. If you use the builder, −
For boat fishing, the amount is preferably from 0.1 to 25% by weight of the composition.

Sequestering agents such as ethylenediaminetetraacetate, amine, novoliposphonate (DEQUEST
> and phosphates, as well as various polyfunctional organic acids and salts may optionally be used.

Yet another component that the compositions of the invention may optionally include is a suds control substance. This material can be used in compositions that tend to generate excessive foam during use. Specific examples of suds control substances include soaps. Soaps are salts of fatty acids, and are particularly useful, including alkali metal soaps such as sodium, potassium, ammonium and alkanol ammonium salts of higher fatty acids having from about 8 to about 24 carbon atoms, preferably from about 10 to about 20 carbon atoms. Sodium, potassium, mono-, di- and triethanolamine salts of a mixture of fatty acids derived from coconut oil and ground nut oil.

When soap is used, its amount may be 0.005% or more, preferably 0.5-2% by weight of the composition. Other suds control substances include organic solvents, hydrophobic silicas and silicone oils or hydrocarbons.

The compositions of the invention also provide suitable rheological properties to keep the one or more undissolved salts homogeneously distributed throughout the composition and to improve the distribution of said salts and composition onto the hard surfaces to be cleaned. Structural materials useful in promoting the adhesion of objects
ring agents) may also optionally be included. Preferred structural materials include multi-N deposits such as sodium carboxymethylcellulose and other chemically modified cellulosic materials, xanthan gum and other non-agglomerating structural materials, such as U.S. Pat. No. 4,329,448. Examples include substances such as B 1opo I ymer PS87 described in No. types of polymers such as acrylic acid polymers crosslinked with multifunctional materials, such as CΔ[1OPO
L # Can be used as a Jill-forming substance. When such structural materials are used in the compositions of the invention, their amount may be 0.001%, preferably 0.01% or more by weight of the composition.

The compositions of the invention may further comprise at least partially esterified resins, such as at least partially esterified rosin adducts and unsaturated dicarboxylic acids or their anhydrides, or monounsaturated aliphatic acids having no carboxylic groups.
At least partially esterified derivatives of copolymerization products of 1 cycloaliphatic or aromatic monomers with unsaturated dicarboxylic acids or their anhydrides may also be included.

Typical examples of suitable copolymers of the latter type include copolymers of ethylene, styrene and vinyl methyl ether with maleic acid, fumaric acid, itaconic acid, citraconic acid, etc. and their anhydrides. Preferred is a styrene/maleic anhydride copolymer.

The compositions of the invention typically contain from 0.005 to 20% by weight of at least partially esterified resin, usually from 0.1 to 1% by weight.
It may optionally be included in an amount of 5% by weight, preferably 0.5-10% by weight.

In addition to the above-mentioned ingredients, the composition of the present invention may contain various other optional ingredients, such as PL+ regulators, fragrances, colorants, optical brighteners, stain suspending agents, cleaning enzymes, and compatible bleaching agents. , gel conditioners, freeze-thaw stabilizers, disinfectants, preservatives, detergent hydrotropes, opacifiers and solvents.

The compositions of the present invention contain less than 10% by weight, preferably less than 5% by weight, of water-soluble abrasives such as feldspar and quartz. This is because such abrasives tend to remain attached to hard surfaces after cleaning, even after rinsing with water.

Ideally, the compositions of the present invention are substantially free of water-soluble abrasives.

Typically, water and optional ingredients, including pond detergent additives, constitute the composition ingredients other than the detersive compounds and water-soluble salts.

Therefore, water and optional ingredients are added to 89.5 to 25 of the composition.
% by weight.

One of the important features of the present invention is that the composition is formulated to have a pH value of 8 or less. The pH value of the composition of the invention is preferably between 5 and 8, ideally between about 6 and 7, but pH values as low as 3 are also possible.

One of the important features of the present invention is that the composition is capable of keeping undissolved particles of salt abrasives suspended. Thus, the consumer does not need to, for example, shake or stir the composition to resuspend and redistribute the precipitated particles before use. To do this, the apparent viscosity of the composition at 20°C must be sheared so that particles of the abrasive made of salt do not settle out by more than 1 cm per corner when the composition is left at a temperature of 20°C. 6500 at speed 3x 1O-5sec-'
It is necessary to make it equal to or higher than Pas. The apparent viscosity at 20°C is ideally determined by the shear rate 3x 1O-5sec-
Surprisingly, it costs more than 25,000 Pas.

This viscosity is 5 to
It can be measured using Kes' law.

The compositions of the present invention should have sufficient apparent viscosity to substantially avoid precipitation of undissolved particles of salt-based abrasives during storage, while at the same time, when used, It must also be fluid so that it can be easily drained from other containers. For this purpose, the apparent viscosity of the composition at 20°C measured with a rotational viscometer is 21 sec.
-' shear rate must be less than or equal to LOPas.

The apparent viscosity at 20°C is 5 at a shear rate of 21 sec-'.
Pas or less is preferable.

Appropriate rheological conditions to meet this criterion include the appropriate selection of anionic and nonionic detergents to obtain a self-structuring liquid with the desired suspension properties, and/or as described herein. It can be provided by appropriate use of other structural materials such as.

One of the preferred methods of adjusting the viscosity of the composition is to use the system described in the applicant's co-pending application EP 8830700, for example.
7.0.

Since the composition of the present invention is in liquid form, it can be easily prepared by simply blending the essential components and optional components in water.

■1. Since the composition of the present invention is a fluid liquid, it is preferably housed in a closable container so that it can be stored, transported and sold without the risk of spillage.

The compositions of the invention are particularly suitable for use in the manual cleaning of tableware, cutlery, pots and other utensils, and in cleaning dirty hard surfaces such as those found in domestic kitchens and bathrooms. There is. The compositions of the present invention can be used as is without dilution, or if desired, they can be first diluted with water and then applied to the soiled surface.

It is easier to apply using a cloth, brush, or sponge. After use, any excess undissolved water-soluble salt abrasive remaining on the surface will dissolve in the water and be easily removed by rinsing with clean water.

Surfaces cleaned with the compositions of the invention in this manner are less likely to leave marks than those cleaned with similar products containing water-insoluble abrasives such as calcite.

Section I" The present invention will be explained in more detail with reference to non-limiting examples below. Composition percentages are by weight unless otherwise indicated. The undissolved potassium sulfate of each example has an average particle size of about 150 μm. All of the compositions of these examples have sufficient turbidity to withstand 6500 Pa at a shear rate of 3xlL5sec-'.
pH2J4 adjustment, which shows a viscosity exceeding s, was carried out using I.lium hydroxide solution or sulfuric acid.

This example is intended to illustrate a formulation example of a four-fold detergent composition suitable for manual dishwashing according to the present invention.

The composition of this detergent concentrate was as follows: wt% 1-lium alkylbenzenesulfonate 3.0 Sodium lauryl ether sulfate (3EO) 4.5 Coconut diethanolamide 7.5 Potassium sulfate 20.0 Fragrance
0.25 water
The remaining 100% viscosity at 20℃ is 21
0.8 Pas at a shear rate of sec-' and 3x 1
At a shear rate of O-5 sec-', it was greater than 6500 Pas.

The pH is adjusted to 7 with sodium hydroxide or sulfuric acid.

The content of undissolved potassium sulfate particles is approximately 10%.

1 tbsp A composition suitable for manual dishwashing was prepared according to the following composition: Sodium 2.7 Sodium lauryl ether sulfate (3 EO) 10.8 Coconut diethanolamide 4.5 Potassium sulfate 8.0 Sodium chloride
2.0 Citric acid 1 to linodium 21120 0.5 Fragrance
0.25 water
Viscosity of 100% remaining at 20°C: 0.6 Pas at shear rate of 21 sec.

Undissolved potassium sulfate particles: 2%.

The pH is adjusted to 6 with helium hydroxide or sulfuric acid.

A detergent composition suitable for manual dishwashing was prepared according to the following composition: Weight % Sodium linear alkylbenzene sulfonate 2.7 Sodium lauryl ether sulfate (3EO) 10.8 Coconut diethanolamide 4,5 Potassium sulfate 12.0 Sodium chloride 2.0 Trisodium citrate 21120 0.5 Sodium polyacrylate (molecules M ~ 4000) 0
．． 2 Fragrance 0.2 Water 100% remaining 2
Viscosity at 5°C: 0.35 Pas at 21 sec-'.

6% undissolved potassium sulfate particles.

The pH of this composition is adjusted to 6 with sodium hydroxide or sulfuric acid.

A detergent composition suitable for manual dishwashing was prepared according to the following composition: Weight % Sodium secondary alkyl sulfonate 3.6 Sodium lauryl ether sulfate 14.4 Potassium sulfate 12.0 Sodium chloride 6.0 Fragrance
0.2 water
100% remaining pl+ = 6.25°C viscosity: 21 sec-''''c0.71 Pas, undissolved potassium sulfate: about 8%.

A hard surface cleaning composition was prepared according to the following composition: Weight % Sodium linear alkylbenzene sulfonate 1.8 Sodium lauryl ether sulfate (3EO) 10.4 Potassium sulfate 40.0 Sodium chloride 2.0 Citric acid Trisodium 2020 0.3 fragrance
0.2 water
100% remaining p+1 = 6.5.2
Viscosity at 5°C + 0.96 Pas at 21 sec-', undissolved potassium sulfate = 35%.

A concentrated detergent composition suitable for manual dishwashing was prepared according to the following composition: Weight % Sodium linear alkylbenzene sulfonate 3.8 Sodium lauryl ether sulfate (3EO) 15.0 Coconut diethanolamide 6.2 Potassium sulfate 12 .0 Sodium chloride 1.7 Trisodium citrate 21120 0.4 Flavor
0.2 water
100% remaining pH = 7° Viscosity at 25°C: 2
2.11'as at 1sec-', undissolved potassium sulfate:
5%.

Claims (17)

[Claims] (1) A fluid, homogeneous, abrasive aqueous liquid detergent composition comprising, in addition to water, i) a cleaning agent and ii) a water-soluble salt, at least a portion of which is potassium sulfate. exists in a dissolved state and an undissolved state, and the undissolved portion of this potassium sulfate is 10 to 500
The composition has an average particle size of μm, the pH of the composition is 8 or less, and the apparent viscosity at 20°C is 6500 Pas at a shear rate of 3 x 10^-^5 sec^-^1.
As described above, the composition has a shear rate of 10 Pas or less at a shear rate of 21 sec^-^1. (2) the amount of detersive agent is 1.5% or more by weight of the composition, the amount of water-soluble salt is 9% or more by weight of the composition, and the amount of potassium sulfate is 2% or more by weight of the composition; The composition according to claim 1. (3) The amount of cleaning agent is 1.5 to 40% by weight of the composition.
3. A composition according to claim 2, wherein the amount of potassium sulfate is from 2 to 65% by weight of the composition. (4) The amount of cleaning agent is 1.5 to 30% by weight of the composition.
3. A composition according to claim 2, wherein the amount of water-soluble salt is from 9 to 50% by weight of the composition. (5) The undissolved portion of potassium sulfate is 0.5 to 6 in the composition.
A composition according to any one of claims 1 to 4, comprising 0% by weight. (6) The composition according to any one of claims 1 to 5, wherein the water-soluble salt contains at least one type of electrolyte that can reduce the solubility of potassium sulfate. (7) The electrolyte contains an alkali metal chloride at 0.5 to 0.5% of the composition.
Composition according to claim 6, comprising in an amount of 10% by weight. (8) A composition according to any one of claims 1 to 7, in which the anionic cleansing agent accounts for 1 to 25% by weight of the composition. (9) The detergent substance contains a water-soluble synthetic anionic sulfated or sulfonated detergent salt having an alkyl group having 8 to 22 carbon atoms in the molecule in an amount corresponding to 2 to 20% by weight of the composition. 9. The composition of claim 8, comprising: (10) The non-ionic cleaning agent is 0.5 to 1% of the composition.
Composition according to claim 8 or 9, comprising 5% by weight. 11. The composition of claim 10, wherein the weight ratio of anionic cleaning agent to nonionic cleaning agent is from 1:9 to 9:1. (12) Claim 1 wherein the water-soluble salt also contains sodium citrate.
12. The composition according to any one of 11 to 11. (13) The composition according to any one of claims 1 to 12, wherein the undissolved potassium sulfate has an average particle size of 20 to 300 μm. (14) The composition according to any one of claims 1 to 13, wherein water accounts for 30 to 89.5% by weight of the composition. (15) The composition according to any one of claims 1 to 14, wherein water accounts for 40 to 80% by weight of the composition. (16) Apparent viscosity at 20℃ is 3×10^-^5sec^
The composition according to any one of claims 1 to 15, which has a shear rate of 25,000 Pas or more at a shear rate of -^1. (17) The composition according to any one of claims 1 to 16, which has an apparent viscosity at 20°C of 5 Pas or less at a shear rate of 21 sec^-^1.