JP3361447B2 - Detergent composition - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent composition which is less likely to cause caking and exhibits stable detergency for a long period of time, and which is particularly suitable as a detergent for hard bodies.

[0002]

2. Description of the Related Art Oil and fat stains derived from foods are deteriorated by the action of heat, sunlight, oxygen in the air and the like to become a sticky resinous or semi-dry state. There are many cases. As a technique for removing such deteriorated dirt, Japanese Patent Publication No. 53-1168 discloses a strong alkaline detergent, that is, an alkaline agent such as ammonia, monoethanolamine, sodium hydroxide, and a water-soluble agent such as cellosolve and carbitol. A detergent composition comprising an organic solvent and a surfactant is disclosed. However, since this cleaning agent has corrosiveness (damage) to a metal surface such as aluminum, there is a problem that it cannot be used depending on the object to be cleaned.

As a solution to this problem, the Applicant has found that a bleaching detergent for hard surfaces containing a hydrogen peroxide emitter, a specific bleach activator and a crystalline or non-crystalline alkali metal silicate. A composition has been proposed (JP-A-8-
337796, Japanese Patent Application No. 9-127373). This composition suppresses high cleaning power and damage to the object to be cleaned (damage to the base material), and when applied to metals such as aluminum, it does not cause problems such as corrosion. It is excellent. However, this composition may cause caking due to moisture absorption,
There is room for improvement in terms of storage stability.

The present invention provides a detergent composition having excellent detergency, suppressed damage to a substrate, and excellent storage stability in which caking does not easily occur even during long-term storage. To aim.

[0005]

Means for Solving the Problems As a result of repeated research to achieve the above object, the present inventors have found that by cleaning the surface of sodium percarbonate as a hydrogen peroxide releasing agent with a specific component, cleaning power and The present invention has been completed by finding that storage stability can be improved without impairing the substrate damage suppression property.

That is, the present invention contains sodium percarbonate and an alkali metal silicate, and the surface of the sodium percarbonate is coated with a surfactant, polyalkylene glycol or an inorganic metal salt. A cleaning composition is provided.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The sodium percarbonate used in the present invention has a surface coated with a surfactant, a polyalkylene glycol or an inorganic metal salt. In this case, the coating is a coating of a part or all of the sodium percarbonate powder, but it is preferable that the coating is wholly coated to prevent caking.

Examples of the surfactant include nonionic surfactants, cationic surfactants, anionic surfactants and amphoteric surfactants, with nonionic surfactants being particularly preferred. The nonionic surfactant has, for example, an alkylene oxide group as a hydrophilic group and an aliphatic hydrocarbon group or an aralkyl group as a hydrophobic group, and the ratio of the hydrophilic group to the hydrophobic group is arbitrary. Can be mentioned. This nonionic surfactant has an ethylene oxide group, a propylene oxide group, or a group containing an ethylene oxide group and a propylene oxide group as a hydrophilic group, and a linear or branched aliphatic carbon group having 6 to 18 carbon atoms as a hydrophobic group. 1 or 2 selected from those having a hydrogen group
More than one kind is preferable.

Examples of the polyalkylene glycol include those having an average molecular weight of 200 to 40,000, those having an average molecular weight of 300 to 10,000 are preferable, and polyethylene glycol and polypropylene glycol are particularly preferable.

Examples of the inorganic metal salt include one or more selected from sodium carbonate, sodium hydrogen carbonate, potassium carbonate and sodium sulfate.

The weight ratio of sodium percarbonate to the surfactant, polyalkylene glycol or inorganic metal salt is preferably 10: 1 to 1 in order to enhance the storage stability of the composition.
50,000: 1, particularly preferably 30: 1 to 10
It is 00: 1.

As a method of coating sodium percarbonate with a surfactant, polyalkylene glycol or an inorganic metal salt, for example, the following method can be applied.

As a method of coating sodium percarbonate with a surfactant, a method of spraying sodium percarbonate with a surfactant or the like can be applied.

As a method for coating sodium percarbonate with polyalkylene glycol, liquid polyalkylene glycol can be coated in the same manner as a surfactant, and solid polyalkylene glycol can be coated with water or an aromatic system. After being dissolved in a solvent, coating treatment can be performed in the same manner as for the surfactant.

A method for coating sodium percarbonate with an inorganic metal salt is described in JP-A-58-217599, No. 9
By applying the coating method according to the coating method of sodium metaborate described in the following Examples and the following pages of JP-A-59-196399, the above-mentioned inorganic metal salt is used in place of sodium metaborate. Can be coated. This method is as follows. 100 g of sodium percarbonate was put into a stirring mixer, and while stirring at 250 rpm, 25% of 5 g of sodium metaborate tetrahydrate (NaB0 ₂ .4H ₂ O) was added.
After spraying an aqueous solution (prepared by heating and melting) and stirring for 10 minutes, it is dried with hot air to obtain sodium percarbonate coated with sodium metaborate / tetrahydrate.

The content of sodium percarbonate in the detergent composition is preferably 10 to 95% by weight, particularly preferably 20 to 85% by weight, from the viewpoint of providing sufficient detergency and economic efficiency. Is.

Examples of the alkali metal silicates used in the present invention include amorphous alkali metal silicates such as sodium silicate and potassium silicate, and crystalline alkali metal silicates. 1 type (s) or 2 or more types can be used.

Examples of such an alkali metal silicate include a crystalline alkali metal silicate of the following general formula (I), a crystalline alkali metal silicate of the general formula (II) or a general formula (III). ) Amorphous alkali metal silicates.

X (M ₂ O) · y (SiO ₂ ) · z (Me _m O _n ) · w (H ₂ O) (I) [wherein M represents an Ia group element in the periodic table, and Me IIa, IIb, IIIa and IVa of the periodic table are selected from Group VIII elements 1
Indicating one kind or a combination of two or more kinds, y / x = 0.5
~ 2.6, z / x = 0.01-1.0, n / m = 0.5-
2.0, showing w = 0 to 20].

In the general formula (I), M is I in the periodic table.
It is selected from the group a elements, and examples thereof include Na and K. These may be used alone or as a mixture of Na ₂ O and K ₂ O to form the M ₂ O component.

In the general formula (I), Me is in the periodic table.
IIa group element, IIb group element, IIIa group element, IVa group element or
Selected from Group VIII elements, such as Mg, Ca, Zn, Y,
Ti, Zr, Fe, etc. can be mentioned. These are not particularly limited, but Mg and Ca are preferable from the viewpoint of resources and safety. Further, these may be used alone or in combination of two or more, and for example, Mg
O, CaO or the like may constitute the Me _m O _n component are mixed.

In the general formula (I), y / x prevents the alkali resistance from becoming insufficient as an alkaline agent and the ion exchange ability from becoming insufficient as an ion exchanger, and water resistance It is preferably 0.5 to 2.6, particularly preferably 1.5 to 2.2, in order to prevent the solubility from being insufficient and having a significant adverse effect on caking properties, solubility and powder properties of the composition. Is. Further, in the general formula (I), z / x has a low on-exchange capacity,
In order to prevent the ion exchanger from becoming insufficient and to prevent the water resistance from becoming insufficient, it is preferably 0.
01 to 1.0, particularly preferably 0.02 to 0.9
Is. Further, the alkali metal silicate of the general formula (I) may be a hydrate, in which case w = 1 to 20.

X, y, z are not particularly limited as long as they have the relations shown by the above y / x ratio and z / x ratio. Note that, as described above, x (M ₂ O) is, for example, x '(Na ₂ O) xx ((K
₂ O), x becomes x '+ x ". Such a relationship is the same in z in the case where the z (Me _m O _n ) component is composed of two or more kinds. n / m represents the number of oxygen ions coordinated to the element, which is substantially 0.5,
It is selected from the values of 1.0, 1.5 and 2.0.

The crystalline alkali metal silicate of the general formula (I) is composed of three components of M ₂ O, SiO ₂ and Me _m O _n , but the raw materials for each of these components are not particularly limited. Known compounds can be used instead of the above compounds. For example, as raw materials for the M ₂ O component, NaOH, K
OH, Na ₂ CO ₃ , K ₂ CO ₃ , Na ₂ SO _{4 and the} like can be mentioned, and examples of the raw material of the SiO ₂ component include silica stone, kaolin, talc, fused silica, sodium silicate and the like. , Me _m O _n the components of the raw materials, CaCO _3,
MgCO ₃ , Ca (OH) ₂ , Mg (OH) ₂ , MgO,
Examples thereof include ZrO ₂ and dolomite.

The method for producing the crystalline alkali metal silicate of the general formula (I) is carried out in the above-mentioned quantitative ratios so that the desired number of x, y and z of the crystalline alkali metal silicate can be obtained. The raw material components are mixed and usually 300 to 1500 ° C., preferably 500 to 1000 ° C., and particularly preferably 600 to 900.
A method of crystallization by firing in the range of ° C can be mentioned. When the temperature is within the above range, water resistance can be imparted by sufficient crystallization, and a sufficient particle size can be maintained to impart sufficient ion exchange ability. The heating time in the above temperature range is usually 0.1 to 24 hours. Such firing is performed using an electric furnace, a gas furnace or the like.

The particle size of the crystalline alkali metal silicate of the general formula (I) is not particularly limited, but is preferably in the range of 0.01 to 100 μm.

M ₂ O · y ′ (SiO ₂ ) · w ′ (H ₂ O) (II) [wherein M represents an alkali metal, and y ′ = 1.5 to 4.
0, w '= 0 to 20].

In the general formula (II), M is the general formula (I).
Has the same meaning as. y ′ and w ′ have y ′ of 1.7 to
It is preferable that w'is 0 in 2.2. Further, those having an ion exchange capacity of 100 to 400 mg CaCO ₃ / g are preferable.

The crystalline alkali metal silicate of the general formula (II) is generally an amorphous glassy sodium silicate.
It is obtained by firing at 0 to 1000 ° C. to make it crystalline. Details of the synthetic method are described in, for example, Phys.Chem.Glasses.
7, p127-p138 (1966), Z.Kristallogr., 129, p 396-p404
(1969). Further, the crystalline alkali metal silicate of the general formula (V) is, for example, a powdery or granular form under the trade name “Na-SKS-6” (δ-Na ₂ Si ₂ O ₅ ) from Hoechst. Is available.

The particle size of the crystalline alkali metal silicate of the general formula (II) is not particularly limited, but is preferably in the range of 0.01 to 100 μm.

X (M ₂ O) · y (SiO ₂ ) (III) [In the formula, M represents a group Ia element of the periodic table, and y / x = 0.5.
~ 3.5].

In the general formula (III), M, x and y have the same meanings as in the general formula (I). In the general formula (III), y / x is prevented from becoming insufficient as an alkaline agent due to low alkalinity and insufficient as an ion exchanger due to low ion exchange ability, resulting in poor water resistance. In order to prevent the adverse effect on the caking property, the solubility, and the powder properties of the composition, it is preferably 1.5 to 3.0. As the amorphous alkali metal silicate represented by the general formula (III), sodium silicate 1 can be used.
No. 2, sodium silicate No. 2, sodium silicate No. 3, and the like.

The content of the alkali metal silicate is preferably 0.1 to 30% by weight in consideration of not damaging the base material and economy in the detergent composition.
It is particularly preferably 1 to 15% by weight.

The compounding ratio of sodium percarbonate and alkali metal silicate is preferably 100: 1 to 1: 2, in order to impart the effect of suppressing damage to the substrate and enhance the stability during storage, and particularly It is preferably 30: 1 to 1: 1.

A bleach activator can be further added to the detergent composition of the present invention. Although the bleach activator is not particularly limited, for example, the following general formula
Examples thereof include N, N, N'-tetraacetylated compounds represented by (IV) and ester compounds represented by the general formula (V), (VI), (VII) or (VIII). Can be used alone or in combination of two or more.

[0036]

[Chemical 1]

[In the formula, a represents 0 or an integer of 1 to 6]

[0038]

[Chemical 2]

[In the formula, R ¹ represents a hydrogen atom or a carbon number of 1 to 10
Represents a linear or branched alkyl group, alkenyl group or acyl group; R ² is a linear or branched alkylene group having 1 to 8 carbon atoms or a linear or branched alkyl group having 1 to 5 carbon atoms; Represents a phenylene group which may be substituted with a group; R ³ represents a linear or branched alkylene group having 1 to 8 carbon atoms; R ⁴ represents a linear or branched chain having 1 to 5 carbon atoms Represents an alkylene group; p represents 0 or 1; A represents a linear or branched alkylene group having 2 to 4 carbon atoms; q
Is an average number of moles of alkylene oxide added 1 to 1
A is the same or different when q is 2 or more; M ¹ represents an alkali metal atom, an alkaline earth metal atom, ammonium, alkylammonium or alkanolammonium].

[0040]

[Chemical 3]

[Wherein R ¹ , R ² , R ⁴ , p, A and q are
It has the same meaning as in the general formula (V), M ² is a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, ammonium,
Indicates alkyl ammonium or alkanol ammonium]

[0042]

[Chemical 4]

[In the formula, R ⁵ represents a linear alkyl group having 6 to 13 carbon atoms, and M ³ represents a hydrogen atom or an alkali metal atom].

The content of the bleaching activator is preferably 1 to 100% by weight, particularly preferably 2 to 80% by weight, and further preferably 3 based on sodium percarbonate.
~ 30% by weight.

A surfactant may be further added to the detergent composition of the present invention. As the surfactant, alkyl glycoside, polyoxyethylene alkyl ether, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene fatty acid ester, oxyethyleneoxypropylene block polymer (trade name Pluronic; manufactured by BASF), fatty acid monoglyceride , Nonionic surfactants such as amine oxides; anionic surfactants such as soaps, alkyl sulfates, alkylbenzene sulfonates, polyoxyethylene alkyl ether sulfates, sulfosuccinic acid diester salts; mono- or dialkyl amines and their polyoxys Cationic surfactants such as ethylene adducts, mono- or di-long-chain alkyl quaternary ammonium salts; amphoteric surfactants such as carbobetaine, sulfobetaine, hydroxysulfobetaine It can be mentioned, which can be formulated alone or in combination of two or more. Of these, anionic surfactants such as alkyl sulfates, alkylbenzene sulfonates, polyoxyethylene alkyl ether sulfates, and soaps are preferable because of their excellent detergency. The content of the surfactant in the denture cleansing composition is preferably 0.01 to 30% by weight, particularly preferably 0.
1 to 20% by weight, more preferably 1 to 5% by weight
Is.

The detergent composition of the present invention may further contain a buffering agent for adjusting pH. Examples of the buffering agent include hydroxides of alkali metals such as sodium hydroxide and potassium hydroxide, amine derivatives such as ammonium hydroxide, mono-, di- or triethanolamine, carbonates of alkali metals such as sodium carbonate and potassium carbonate, and carbonates. Examples thereof include carbonates such as ammonium, silicates of alkali metals such as sodium silicate and potassium silicate, silicates such as ammonium silicate and the like. In addition to these, sodium sulfate and potassium sulfate. Alkali metal sulfates such as lithium sulfate, ammonium sulfates, sodium bicarbonate, potassium bicarbonate, alkali metal bicarbonates such as lithium bicarbonate, ammonium bicarbonate and the like can also be added. The blending amount of these buffers varies depending on the pH to be adjusted, but is preferably 0.01 to 30% by weight in the detergent composition.

The detergent composition of the present invention may further contain a chelating agent. It is generally known that oxygen-based detergents are self-decomposed by a trace amount of metal, and by adding a chelating agent, it is possible to prevent deterioration of washing performance and improve storage stability. As the chelating agent, alkali metal salts such as tripolyphosphoric acid, pyrophosphoric acid, orthophosphoric acid, and hexametaphosphoric acid, ethylenediaminetetraacetic acid (EDTA), hydroxyiminodiacetic acid,
Dihydroxyethylglycine, nitrilotriacetic acid, hydroxyethylenediaminetriacetic acid, diethylenetriamine 5
Acetic acid, triethylenetetramine 6-acetic acid and their alkali metal salts, aminotrimethylenephosphonic acid, 1-hydroxyethylidene-1,1-diphosphonic acid, ethylenediaminetetramethylenephosphonic acid, diethylenetriaminepenta-methylenephosphonic acid, aminotrimethylenephosphonic acid N-oxides, poly α-hydroxyacrylic acid and alkali metal salts thereof, and the like,
These may be used alone or in combination of two or more. The content of the chelating agent in the detergent composition is preferably 0.0001 to 10% by weight, and particularly preferably 0.001 to 3% by weight.

The detergent composition of the present invention may further contain an enzyme. As an enzyme, a protease,
Amylase, lipase, isoamylase, pullulanase, oxidase, peroxidase and the like can be mentioned, and these can be blended alone or in combination of two or more.

If necessary, the detergent composition of the present invention further comprises solubilizers such as sodium p-toluenesulfonate, sodium xylenesulfonate, sodium alkenylsuccinate, urea, bactericides, various agents, and peroxides. Stabilizers of oxides, penetrants, suspending agents such as clay, abrasives, pigments,
Dyes, fragrances, etc. can be added.

The pH of the aqueous solution of the detergent composition of the present invention is preferably 3 to 13, and particularly preferably 6 to 12.

The detergent composition of the present invention is preferably filled in a container having a moisture permeability of 3% or less, which is obtained from a moisture permeability evaluation test under predetermined conditions. The moisture permeability evaluation test is as follows. (Moisture Permeability Evaluation Test) 100 g of calcium chloride was placed in a container, sealed, and then stored for 1 week under the conditions of a temperature of 40 ° C. and a relative humidity of 80%, and the following formula: moisture permeability (%) = (W ₂ −W ₁ ) × 1
00 / W ₁ [where W ₁ is the initial weight of calcium chloride (1
00g), and W ₂ represents the weight of calcium chloride after 1 week].

The form of the container filled with the cleaning composition of the present invention is not particularly limited, and commonly used bottles, pouches, carton boxes and the like can be used.

The detergent composition of the present invention can be applied to various uses, for example, detergents for clothes, bleaching agents for clothes, detergents for hard bodies, bleaching agents for hard bodies,
It can be used as a cleaning agent for dentures and a cleaning agent for a fully automatic washing machine washing tub. Here, the "hard body" means a material that retains a certain shape regardless of whether it is two-dimensional or three-dimensional, and if it can be washed, it is hard. The degree of salmon is not limited. As this hard body, plastic, rubber, metal, tile,
In addition to fixed objects such as floors, stairs, and walls made of brick, concrete, cement, glass, wood, etc., it is possible to list various instruments, tools, tools, furniture, tableware, etc. that come into contact with people in general. . Therefore, the cleaning composition of the present invention, as a cleaning agent for hard bodies, a floor cleaning agent, a bleaching agent for tableware, a bleaching agent for kitchens, a cleaning agent for standing in kitchens, a cleaning agent for bathrooms, a fungicide for bathrooms. , Automatic washing machine washing tub cleaning agent,
It can be applied to cleaning agents for drainage pipes, cleaning agents for small items in the kitchen and washroom, etc.

[0054]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto.

Test Example 1 (Moisture Permeability Evaluation Test) The moisture permeability of each container was measured using various containers for general cleaning agents. 100 g of calcium chloride (manufactured by Katayama Chemical Co., Ltd., for measuring water content) was put in each container and sealed. In the case of a bottle, the lid was closed, and in the case of a pouch, heat sealing was performed, and a 0.3 mm slit for venting air was provided. Then, it was stored for 1 week under the conditions of a temperature of 40 ° C. and a relative humidity of 80%. From the measured weights of calcium chloride before and after storage, the following formula: moisture vapor transmission rate (%) = (W ₂ −W ₁ ) × 100 / W ₁ [wherein
W ₁ represents the initial weight of calcium chloride (100 g),
W ₂ represents the weight of calcium chloride after one week] to determine the moisture permeability. The water vapor transmission rate of each container is as follows. (Type of container) (Water vapor transmission rate) Bottle A 3.7% Bottle B 2.3% Bottle C 1.2% Pouch A 4.2% Pouch B 1.3% Carton A 4.5%.

Examples 1 to 12 and Comparative Examples 1 to 4 A cleaning composition was produced using the components shown in Table 1 and the following. When surfactants A, B, sodium carbonate, and potassium carbonate are used as coating components, each coating component is made into an aqueous solution of about 20 to 40% by weight and sprayed on sodium percarbonate in a mist state. The coating was performed by heat drying. When PEG600 was used as the coating component, a theoretical amount of PEG600 heated to a liquid state was dropped on the sodium percarbonate particles, mixed, and then dried. When PEG6000 was used as the coating component, sodium percarbonate and a theoretical amount of flaky PEG6000 were mixed, and the mixture was stirred while heating and then dried. Surfactant A: C ₁₂ H ₂₅ O (CH ₂ CH ₂ O) ₈ H Surfactant B: C ₁₂ H ₂₅ O (CH ₂ CH ₂ O) ₆ CH ₂ CH
₂ OH PEG600: (Polyethylene glycol molecular weight 600) PEG6000: Trade name (Polyethylene glycol molecular weight 6
000) Sodium alkali silicate A: M = N in the general formula (I)
_{a; Me m O n = CaO} ; y / x = 1.5; z / x = 0.
2; w = 0 sodium silicate B: M = N in the general formula (I)
a, K (K / Na = 0.03); Me m O n = CaO, Mg
O; (Mg / Ca = 0.01); y / x = 1.8; z / x
= 0.02; w = 0 Sodium Alkali Silicate C: Powdered Sodium Silicate No. 2 (Nippon Kagaku Co., Ltd.) Bleach Activator A:

[0057]

[Chemical 5]

AS: sodium lauryl sulfate (manufactured by Wako Pure Chemical Industries, Ltd.) AES: C ₁₂ H ₂₅ O (CH ₂ CH ₂ O) ₄ SO ₃ H Dequest 2015 DN: chelating agent (manufactured by Japan Monsanto) After filling each cleaning composition into bottle C, closing the lid and sealing, 1 at the temperature of 40 ° C. and the relative humidity of 80%.
It was stored for 2 months or 2 months, and the storage stability (caking property) was evaluated according to the following criteria. The results are shown in Table 1. The numerical value of each component in Table 1 is expressed by weight%. ◎: Completely smooth ○: Partially hardened △: Whole hardened, but broken by shaking the container ×: Completely hardened and not broken even by shaking the container

[0059]

[Table 1]

After the end of the storage stability test, Examples 1-12
When the aluminum plate on which the deteriorated oil and grease stains were adhered was washed with the detergent composition described in 1. above, a high cleaning power was exhibited, and no particular damage was observed on the aluminum plate after washing.

Examples 13 to 16 and Comparative Examples 5 to 8 Cleaning agent compositions having the compositions shown in Table 2 were produced, and they were prepared in Table 2
It was filled in the container shown in. These compositions were tested for storage stability as in Examples 1-12. The results are shown in Table 2. The numerical value of each component in Table 2 is expressed by weight%.

[0062]

[Table 2]

Even when the bottle A and the pouch A having a moisture permeability of more than 3% were filled, the detergent compositions of Examples 13 to 16 exhibited excellent storage stability. Therefore, the cleaning composition of the present invention has a practically sufficient storage stability in practice, and the storage stability can be further enhanced by filling the composition with a water vapor permeability container of 3% or less. It was confirmed. In addition, after completion of the storage stability test, Examples 13 to 16
When the aluminum plate on which the deteriorated oil and grease stains were adhered was washed with the detergent composition described in 1. above, a high cleaning power was exhibited, and no particular damage was observed on the aluminum plate after washing.

[0064]

EFFECT OF THE INVENTION The detergent composition of the present invention has excellent detergency, suppressed damage to the substrate, and excellent storage stability.

Continuation of the front page (56) Reference JP-A-8-337796 (JP, A) JP-A-50-125999 (JP, A) JP-A-50-92895 (JP, A) JP-A 64-1799 (JP , A) JP-A-6-157010 (JP, A) JP-A-54-143799 (JP, A) JP-A-5-310402 (JP, A) JP-A-9-501716 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) C11D 17/04 B65D 81/24 C11D 7/54 C11D 17/06

Claims (5)

(57) [Claims] 1. It contains sodium percarbonate and an alkali metal silicate, and the sodium percarbonate is used to polish the surface.
All SANYO coated with triethylene glycol, excessive
The weight ratio of sodium carbonate to alkali metal silicate is 3
0: 1 to 1: 1 with sodium percarbonate and polyethylene
A cleaning composition comprising a weight ratio with recall of 30: 1 to 1000: 1 . 2. The alkali metal silicate has the following general formula (I): x (M ₂ O) .y (SiO ₂ ) .z (Me _m O _n ) .w (H ₂ O) (I). [Wherein M is a group Ia element of the periodic table, Me is IIa, II
b, IIIa, IVa, or one or more selected from Group VIII elements, y / x = 0.5 to 2.6, z / x = 0.01 to
1.0, n / m = 0.5 to 2.0, and w = 0 to 20] are shown.] The cleaning composition according to claim 1 . 3. The alkali metal silicate has the following general formula (II): M ₂ O · y ′ (SiO ₂ ) · w ′ (H ₂ O) (II) [wherein M is a periodic table. Group Ia element of y ′ = 1.
5 to 4.0, and w ′ = 0 to 20 is shown.] The cleaning composition according to claim 1 or 2 . 4. The alkali metal silicate has the following general formula (III): x (M ₂ O) · y (SiO ₂ ) (III) [wherein M represents an Ia group element in the periodic table] , Y / x =
[Indicated by 0.5 to 3.5]]. The cleaning composition according to any one of claims 1 to 4 . 5. A cleaning method, characterized in that the cleaning composition according to any one of claims 1 to 4 is filled in a container having a moisture permeability of 3% or less, which is obtained from the following moisture permeability evaluation test. Agent composition. (Moisture Permeability Evaluation Test) 100 g of calcium chloride was placed in a container, sealed, and then stored for 1 week under the conditions of a temperature of 40 ° C. and a relative humidity of 80%, and the following formula: moisture permeability (%) = (W ₂ −W ₁ ) × 100 / W ₁ [wherein
W ₁ represents the initial weight of calcium chloride (100 g),
W ₂ indicates the weight of calcium chloride after 1 week].