JP2017008139A - Washing soap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a detergent having an enhanced rinsing property.SOLUTION: A detergent contains a compound represented by the general formula (I) of X-COO-Y, and a surfactant excluding the compound and higher aliphatic acid salt. In the formula (I), X is a branched alkyl group having 5 to 21 carbon atoms or a linear alkyl group having 5 to 21 carbon atoms. A carbon atom binding a carbon atom of a carbonyl group in the formula (I) is a secondary carbon atom when X is the linear alkyl group. Y is an alkyl group having 3 to 16 carbon atoms or -(RO)-R, Ris an alkylene group having 2 to 4 carbon atoms, m is the number of 1 to 5, and Ris an alkyl group, a phenyl group or a benzyl group having 1 to 16 carbon atoms.SELECTED DRAWING: None

Description

  The present invention relates to a cleaning agent.

In general, surfactants such as nonionic surfactants or anionic surfactants are used as main cleaning components for detergents for clothing or hard surfaces such as tableware or baths.
As the nonionic surfactant, for example, polyoxyalkylene alkyl ether, polyoxyalkylene alkyl allyl ether, alkyl glycoside, fatty acid polyoxyalkylene alkyl ether and the like are used.

In recent years, due to increasing awareness of environmental burdens, there is a demand for cleaning agents that can be rinsed with a small amount of water and have good rinsing properties. In particular, washing machines that use a small amount of water, such as drum-type washing machines, have come to be used for washing clothes, and cleaning agents can be rinsed once even under conditions of low water consumption. There is a need to promote the objects to be cleaned.
Some cleaning agents contain a foam control agent such as a higher fatty acid salt (soap) or a silicone-based antifoaming agent. Such a detergent contains a foam control agent, which suppresses foaming of the detergent (foam suppression), defoams the generated foam (antifoam), and improves rinsing properties. I am trying.

Conventionally, a cleaning agent has been proposed which is improved in antifoaming properties and antifoaming properties by combining specific surfactants.
For example, a liquid detergent composition containing a silicone foam inhibitor and a specific fatty acid ester has been proposed (for example, Patent Document 1).
In addition, a detergent containing a linear fatty acid ester and a surfactant in a predetermined ratio has been proposed (for example, Patent Document 2).

Japanese National Patent Publication No. 11-513066 JP 2013-91882 A

However, the liquid detergent composition described in Patent Document 1 and the cleaning agent described in Patent Document 2 are not satisfactory in rinsing properties.
Therefore, the present invention is directed to a cleaning agent with improved rinsing properties.

The cleaning agent of the present invention contains (A) component: a compound represented by the following general formula (I), and (B) component: a surfactant excluding the (A) component and higher fatty acid salt. It is characterized by.
X-COO-Y (I)
[In formula, X is a C5-C21 branched alkyl group or a C5-C21 linear alkyl group. When X is a linear alkyl group, the carbon atom bonded to the carbon atom of the carbonyl group in formula (I) is a secondary carbon atom. Y is an alkyl group having 3 to 16 carbon atoms, or ^{- _{(R 1 O) m -R 2}} . R ¹ is an alkylene group having 2 to 4 carbon atoms. m is a number from 1 to 5. R ² is an alkyl group having 1 to 16 carbon atoms, a phenyl group, or a benzyl group. ]

The cleaning agent of the present invention preferably further contains (C) component: hydroxycarboxylic acid or a salt thereof.
The cleaning agent of the present invention preferably further contains a higher fatty acid salt.
The component (B) preferably contains a nonionic surfactant and a cationic surfactant.

  The cleaning agent of the present invention has a higher rinsing property.

(Washing soap)
The cleaning agent of the present invention comprises (A) component: a compound represented by the general formula (I), and (B) component: a surfactant excluding the component (A) and the higher fatty acid salt. It is.
The dosage form of the cleaning agent of the present invention may be a liquid or a solid such as a granule, a tablet, a briquette, a sheet or a bar, and is preferably a liquid from the viewpoints of manufacturability and usability.
In the case of a liquid cleaning agent (hereinafter sometimes referred to as “liquid cleaning agent”), it may be a one-component type in which both the component (A) and the component (B) are mixed in the dispersion medium, or (A) A two-component type composed of a first liquid containing the component and a second liquid containing the component (B) may be used.
In the case of a granular cleaning agent (hereinafter sometimes referred to as “granular cleaning agent”), the component (A) and the component (B) may be mixed, and the component (A) and the component (B) It may be prepared as a separate granular material.

The liquid detergent preferably has a viscosity (25 ° C.) of 10 to 300 mPa · s. If the viscosity is within the above range, the handling of the liquid detergent is good.
The viscosity of the liquid detergent indicates a value (measurement condition: rotor No. 2, rotation speed 30 rpm, viscosity after 10 rotations) measured by a B-type viscometer (manufactured by TOKIMEC).

When the liquid detergent is a one-pack type, the pH is preferably 4 to 11, and more preferably 6 to 10. If pH is in the said range, the liquid stability of a liquid detergent will be maintained favorable.
In addition, pH of a liquid cleaning agent adjusts a sample to 25 degreeC, and shows the value measured by a pH meter (HM-30G, Toa DKK Corporation) etc.

The water content of the solid cleaning agent (hereinafter sometimes referred to as “solid cleaning agent”) is, for example, 10% by mass or less.
For example, the average particle size of the granular detergent is preferably 200 to 1500 μm, and more preferably 250 to 1000 μm. If the average particle size is equal to or greater than the preferred lower limit, powdering during use is suppressed. On the other hand, if an average particle diameter is below a preferable upper limit, the solubility in water will increase.

The average particle size in this article is a value determined by the following measurement method.
The average particle diameter can be measured by a classification operation using a 9-stage sieve having openings of 1680 μm, 1410 μm, 1190 μm, 1000 μm, 710 μm, 500 μm, 350 μm, 250 μm and 149 μm and a tray. In the classification operation, a sieve with a small opening is stacked in order on a tray, and a sample of 100 g / time is placed on the top of the top 1680 μm sieve, a lid is put on, and a low-tap sieve shaker (stock) (Made by Iida Seisakusho, tapping: 156 times / minute, rolling: 290 times / minute) and vibrating for 10 minutes. Thereafter, the sample remaining on each sieve and the tray is collected for each sieve, and the mass of the sample is measured. Then, the mass frequency of the tray and each sieve is integrated, the opening of the first sieve where the integrated mass frequency is 50% or more is “a μm”, and the opening of the sieve that is one step larger than a μm is “b μm”. To do. In addition, the integrated value of the mass frequency from the tray to the a μm sieve is “c%”, and the mass frequency on the a μm sieve is “d%”. And an average particle diameter (50 mass% particle diameter) is calculated | required by the following Formula (1), and let this be an average particle diameter of a sample.

<(A) component: compound represented by general formula (I)>
The component (A) is a compound represented by the following general formula (I).
By containing the component (A), the cleaning agent of the present invention can quickly defoam the foam formed by the foaming of the component (B) and improve the rinsing properties.
X-COO-Y (I)
[In formula, X is a C5-C21 branched alkyl group or a C5-C21 linear alkyl group. When X is a linear alkyl group, the carbon atom bonded to the carbon atom of the carbonyl group in formula (I) is a secondary carbon atom. Y is an alkyl group having 3 to 16 carbon atoms, or ^{- _{(R 1 O) m -R 2}} . R ¹ is an alkylene group having 2 to 4 carbon atoms. m is a number from 1 to 5. R ² is an alkyl group having 1 to 16 carbon atoms, a phenyl group, or a benzyl group. ]

In the formula (I), X is a branched alkyl group having 5 to 21 carbon atoms or a linear alkyl group having 5 to 21 carbon atoms, preferably a branched alkyl group having 5 to 21 carbon atoms. It is.
The carbon number of the branched or straight chain alkyl group in X is preferably 5 to 13 carbon atoms, more preferably 6 to 11 carbon atoms, and further preferably 6 to 10 carbon atoms. If the carbon number is less than the preferred lower limit, the defoaming effect may be difficult to obtain. When the carbon number exceeds the preferable upper limit, the hydrophobicity becomes too strong, and the stability of the cleaning agent may be impaired.
When X is a linear alkyl group, the carbon atom bonded to the carbon atom of the carbonyl group in formula (I) is a secondary carbon atom.
When X is a branched alkyl group, the number of branched side chains is preferably 1 to 4, more preferably 1 or 2, and even more preferably 1. If the number of side chains is within the above range, sufficient antifoaming properties are exhibited.

In the formula (I), Y is an alkyl group having 3 to 16 carbon atoms, or ^{- _{(R 1 O) m -R 2}} .

When Y is an alkyl group:
The alkyl group in Y preferably has 6 to 10 carbon atoms. If the carbon number is less than the preferred lower limit, the defoaming effect may be difficult to obtain. When the carbon number exceeds the preferable upper limit, the hydrophobicity becomes too strong, and the stability of the cleaning agent may be impaired.
Y may be a linear alkyl group or a branched alkyl group, and among them, a branched alkyl group is preferable. If Y is a branched alkyl group, the antifoaming property can be further enhanced.
When Y is a branched chain, the number of side chains is preferably 1 to 4, more preferably 1 or 2, and even more preferably 1. If the number of side chains is within the above range, sufficient antifoaming properties are exhibited.
Preferable Y includes, for example, isotridecyl group, ethylhexyl group, hexyldecyl group, isobutyl group, isopropyl group, etc. Among them, from the viewpoint of antifoaming property and liquid stability when used as a liquid detergent, ethylhexyl group Is more preferable.
When Y is an alkyl group, the branched or linear alkyl group in X preferably has 5 to 13 carbon atoms, more preferably 6 to 11 carbon atoms, still more preferably 7 to 10 carbon atoms, and 7 to 9 carbon atoms. Is particularly preferred. When the carbon number of X is within the above range, the balance between hydrophilicity and hydrophobicity becomes better, and the defoaming property can be further improved.

When Y is — (R ¹ O) _m —R ² :
R ¹ is an alkylene group having 2 to 4 carbon atoms, preferably an alkylene group having 2 or 3 carbon atoms, and more preferably an alkylene group having 3 carbon atoms. When the number of carbon atoms is within the above range, the balance between hydrophilicity and hydrophobicity is improved, and the defoaming property can be improved.
m is a number of 1 to 5, preferably 2 to 5, and more preferably 3. If m is less than the preferred lower limit, the hydrophobicity becomes too strong, and the liquid stability when used as a liquid detergent may be impaired. When m exceeds a preferable upper limit, the hydrophilicity becomes too strong, and there is a possibility that the defoaming effect cannot be obtained.
R ² is an alkyl group having 1 to 16 carbon atoms, a phenyl group or a benzyl group, and among them, an alkyl group having 1 to 16 carbon atoms is preferable. When R < ² > is an alkyl group, 1-12 are preferable, as for carbon number of R < ² >, 1-6 are more preferable, and 1 (namely, methyl group) is more preferable. When the carbon number of R ² is within the above range, the liquid stability when the liquid cleaning agent is used becomes better.
When Y is — (R ¹ O) _m —R ² , the branched or linear alkyl group in X preferably has 5 to 13 carbon atoms, more preferably 7 to 11 carbon atoms, 9 is more preferable. When the carbon number of X is within the above range, the balance between hydrophilicity and hydrophobicity becomes better, and the defoaming property can be further improved.

The component (A) can be produced by a conventionally known method.
For example, in the formula (I), the method for producing the component (A) in which Y is an alkyl group includes, for example, a method by transesterification of fats and oils and monohydric alcohols, , A method of esterifying a fatty acid with a monohydric alcohol, a method by transesterification of a fatty acid alkyl ester and a monohydric alcohol, and the like.
(A) Carbon number of the fatty acid residue which comprises a component cuts a carbon fraction by distilling (A) component, for example, or two types of carbon fraction of the fatty-acid alkylester which has desired carbon number It can adjust by using the raw material mix | blended above.
Although it does not specifically limit as fats and oils used for the manufacturing method of (A) component, Vegetable oil or animal oil is preferable and vegetable oil is more preferable. Examples of vegetable oils include rapeseed oil, sunflower oil, soybean oil, cottonseed oil, sunflower oil, castor oil, olive oil, corn oil, coconut oil, palm oil, palm kernel oil, and the like. Absent. Among these, palm kernel oil and coconut oil are preferred because of the high content of fatty acids having 6 to 14 carbon atoms. Examples of animal oils include beef tallow, pork tallow, and fish oil, but are not particularly limited thereto.
In addition, the alcohol used in the method for producing the component (A) is not particularly limited, but natural alcohol such as CO-1214 (trade name) or CO-1270 (trade name) manufactured by Procter & Gamble, Mitsubishi Corporation Diadol manufactured by Kagaku Co., Ltd. (trade name, C13; C represents the number of carbons; the same shall apply hereinafter), Neodol manufactured by Shell (trade name, a mixture of C12 and C13), Safol 23 manufactured by Sasol (trade name, C12 and C13) are preferred.

Examples of the component (A) include 2-ethylbutyl 2-ethylbutanoate, 2-ethylhexyl 2-ethylbutanoate, 2-ethyloctyl 2-ethylbutanoate, 2-ethyldecyl 2-ethylbutanoate, 2-ethyldodecyl 2-ethylbutanoate. 2-ethylbutyl 2-ethylhexanoate, 2-ethylhexyl 2-ethylhexanoate, 2-ethyloctyl 2-ethylhexanoate, 2-ethyldecyl 2-ethylhexanoate, 2-ethyldodecyl 2-ethylhexanoate, 2- 2-ethylbutyl ethyloctanoate, 2-ethylhexyl 2-ethyloctanoate, 2-ethyloctyl 2-ethyloctanoate, 2-ethyldecyl 2-ethyloctanoate, 2-ethyldodecyl 2-ethyloctanoate, 2-ethyldecanoic acid 2 -Ethylbutyl, 2-ethyldecanoic acid Ruhexyl, 2-ethyloctyl 2-ethyldecanoate, 2-ethyldecyl 2-ethyldecanoate, 2-ethyldodecyl 2-ethyldecanoate, 2-ethylbutyl 2-ethyldodecanoate, 2-ethylhexyl 2-ethyldodecanoate, 2-ethyldodecane 2-ethyloctyl acid, 2-ethyldecyl 2-ethyldodecanoate, 2-ethyldodecyl 2-ethyldodecanoate, 2-ethylbutyl 2-ethyltetradecanoate, 2-ethylhexyl 2-ethyltetradecanoate, 2-ethyltetradecanoic acid 2- Ethyloctyl, 2-ethyltetradecanoate 2-ethyldecyl, 2-ethyltetradecanoate 2-ethyldodecyl, 2-ethylpentadecanoate 2-ethylbutyl, 2-ethylpentadecanoate 2-ethylhexyl, 2-ethylpentadecanoate 2-ethyloctyl 2-ethylpentadecanoate 2-ethyldecyl, 2-ethylpentadecanoate 2-ethyldodecyl, 2-ethylhexadecanoate 2-ethylbutyl, 2-ethylhexadecanoate 2-ethylhexyl, 2-ethylhexadecanoate 2-ethyloctyl, 2-ethyl Examples include 2-ethyldecyl hexadecanoate, 2-ethyldodecyl 2-ethylhexadecanoate, and the like.
Among these, since the defoaming effect is more easily obtained, 2-ethylbutyl 2-ethylhexanoate, 2-ethylhexyl 2-ethylhexanoate, 2-ethyloctyl 2-ethylhexanoate, 2-ethylhexanoic acid 2- One or more compounds selected from the group consisting of ethyl decyl and 2-ethyl dodecyl 2-ethylhexanoate are preferred, and among these, 2-ethylhexyl 2-ethylhexanoate is particularly preferred.
(A) A component may be used individually by 1 type and may be used in combination of 2 or more type.

  When the dosage form of the cleaning agent is liquid (liquid cleaning agent), the content of the component (A) in the liquid cleaning agent is 0.01 to 20% by mass with respect to the total amount (100% by mass) of the liquid cleaning agent. % Is preferable, 0.1 to 20% by mass is more preferable, 0.5 to 10% by mass is further preferable, and 1 to 5% by mass is particularly preferable. When the content of the component (A) is less than the preferred lower limit, it is difficult to obtain the defoaming effect. When the content of the component (A) exceeds the preferable upper limit value, there is a possibility that the cleaning property is lowered or the liquid stability is impaired.

  When the dosage form of the cleaning agent is solid (solid cleaning agent), the content of the component (A) in the solid cleaning agent is 0.01 to 10% by mass with respect to the total amount (100% by mass) of the solid cleaning agent. % Is preferable, and 0.1 to 5% by mass is more preferable. When the content of the component (A) is less than the preferred lower limit, it is difficult to obtain the defoaming effect. When the content of the component (A) exceeds the preferable upper limit, there is a possibility that the cleaning property may be lowered or the powder physical properties such as fluidity may be lowered in the granular cleaning agent.

<(B) component: surfactant>
Component (B) is a surfactant excluding component (A) and higher fatty acid salts. The cleaning agent exhibits excellent detergency by containing the component (B).

  (B) component should just be surfactant except (A) component and a higher fatty acid salt, for example, non-soap anionic surfactant, cationic surfactant, nonionic surfactant (however, (A) component And surfactants conventionally used in detergents, such as amphoteric surfactants.

Non-soap anionic surfactants (hereinafter sometimes referred to as “(Ba) component”) are anionic surfactants not classified as higher fatty acid salts.
Examples of the (Ba) component include the following anionic surfactants.
(1) A linear or branched alkylbenzene sulfonate (LAS or ABS) having an alkyl group having 8 to 18 carbon atoms.
(2) Alkanesulfonate having 10 to 20 carbon atoms.
(3) C10-20 α-olefin sulfonate (AOS).
(4) Alkyl sulfate or alkenyl sulfate (AS) having 10 to 20 carbon atoms.
(5) Any one of alkylene oxides having 2 to 4 carbon atoms, or ethylene oxide (EO) and propylene oxide (PO) (molar ratio EO / PO = 0.1 / 9.9 to 9.9 / 0.1) An alkyl (or alkenyl) ether sulfate (AES) having a linear or branched alkyl (or alkenyl) group having 10 to 20 carbon atoms added with an average of 0.5 to 10 mol.
(6) Addition of any of alkylene oxides having 2 to 4 carbon atoms or EO and PO (molar ratio EO / PO = 0.1 / 9.9 to 9.9 / 0.1) on average 3 to 30 mol Alkyl (or alkenyl) phenyl ether sulfate having a linear or branched alkyl (or alkenyl) group having 10 to 20 carbon atoms.
(7) Any one of alkylene oxides having 2 to 4 carbon atoms, or EO and PO (molar ratio EO / PO = 0.1 / 9.9 to 9.9 / 0.1), an average of 0.5 to 10 An alkyl (or alkenyl) ether carboxylate having a linear or branched alkyl (or alkenyl) group having 10 to 20 carbon atoms added by mole.
(8) Alkyl polyhydric alcohol ether sulfates such as alkyl glyceryl ether sulfonic acids having 10 to 20 carbon atoms.
(9) Long chain monoalkyl, dialkyl or sesquialkyl phosphates.
(10) Polyoxyethylene monoalkyl, dialkyl or sesquialkyl phosphate.
(11) C14-18 fatty acid methyl ester sulfonate (MES).
These (Ba) components can be used as alkali metal salts such as sodium and potassium, amine salts, ammonium salts and the like.

  Although content of (Ba) component in (B) component is not specifically limited, 1-80 mass% is preferable with respect to the total amount (100 mass%) of (B) component, and 1-50 mass% is more. preferable. If it is in the said range, higher washing | cleaning property will be acquired with respect to various stain | pollution | contamination.

The nonionic surfactant (hereinafter sometimes referred to as “(Bn) component”) is not particularly limited as long as it excludes the component (A), and examples thereof include the following.
(1) An average of 3 to 30 moles, preferably 3 to 20 moles, more preferably 5 to 20 moles of an alkylene oxide having 2 to 4 carbon atoms is added to an aliphatic alcohol having 6 to 22 carbon atoms, preferably 8 to 18 carbon atoms. , Polyoxyalkylene alkyl (or alkenyl) ethers. Among these, polyoxyethylene alkyl (or alkenyl) ether and polyoxyethylene polyoxypropylene alkyl (or alkenyl) ether are preferable. Examples of the aliphatic alcohol used here include primary alcohols and secondary alcohols. The alkyl group may have a branched chain. As the aliphatic alcohol, a primary alcohol is preferable.
(2) Polyoxyethylene alkyl (or alkenyl) phenyl ether.
(3) A fatty acid alkyl ester alkoxylate in which an alkylene oxide is added between ester bonds of a long-chain fatty acid alkyl ester.
(4) Polyoxyethylene sorbitan fatty acid ester.
(5) Polyoxyethylene sorbite fatty acid ester.
(6) Polyoxyethylene fatty acid ester.
(7) Polyoxyethylene hydrogenated castor oil.
(8) Glycerin fatty acid ester.

  As the component (Bn), the above (1) or (3) is preferable, and among them, a polyoxyalkylene type nonionic surfactant represented by the following general formula (b1) (hereinafter referred to as “component (b1)”) And a polyoxyalkylene type nonionic surfactant represented by the following general formula (b2) (hereinafter sometimes referred to as “component (b2)”) is more preferable.

_{^{R 11 -X 1 - [(E}} 1 O) s / (P 1 O) t] -R 12 ··· (b1)
[Wherein, R ¹¹ represents an alkyl group having 8 to 18 carbon atoms or an alkenyl group having 8 to 18 carbon atoms. X ¹ is —O—, —COO— or —CONH—. R ¹² is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms. s is a number of 3 to 20 representing the average number of repetitions of E ¹ O. t is a number from 0 to 6 representing the average number of repetitions of P ¹ O. E ¹ O represents an oxyethylene group, and P ¹ O represents an oxypropylene group, and E ¹ O and P ¹ O may be mixed. ]

In the formula (b1), R ¹¹ is preferably an alkyl group having 10 to 18 carbon atoms or an alkenyl group having 10 to 18 carbon atoms from the viewpoint of detergency, and may be linear or branched. Also good. Examples of R ¹¹ include alkyl groups or alkenyl groups derived from raw materials such as primary or secondary higher alcohols, higher fatty acids, higher fatty acid amides, and the like.
When R ¹² is an alkyl group, R ¹² is preferably an alkyl group having 1 to 3 carbon atoms. When R ¹² is an alkenyl group, R ¹² is preferably an alkenyl group having 2 or 3 carbon atoms.

X ¹ is preferably —O— or —COO—.
When X ¹ is —O—, the component (b1) is an alkyl ether type nonionic surfactant.
When X ¹ is —O—, R ¹¹ preferably has 10 to 18 carbon atoms from the viewpoint of detergency. R ¹¹ may have an unsaturated bond. Further, when X ¹ is —O—, R ¹² is preferably a hydrogen atom.
When X ¹ is —COO—, the component (b1) is a fatty acid ester type nonionic surfactant. When X ¹ is —COO—, from the viewpoint of detergency, the carbon number of R ¹¹ is preferably 9-17, and more preferably 11-17. R ¹¹ may have an unsaturated bond. When X ¹ is —COO—, R ¹² is preferably an alkyl group having 1 to 3 carbon atoms, and more preferably a methyl group.

In said formula (b1), s is a number of 3-20, Preferably it is a number of 5-18. When s exceeds 20, the HLB value becomes too high and the cleaning power tends to decrease. On the other hand, when s is less than 3, the raw material odor of the component (A) itself tends to deteriorate.
t is a number from 0 to 6, preferably a number from 0 to 3. When t exceeds 6, when it is set as a liquid cleaning agent, it exists in the tendency for the storage stability under high temperature to fall.
E ¹ O and P ¹ O may be mixed and arranged. “(E ¹ O) _s / (P ¹ O) _t ” means that E ¹ O and P ¹ O may be added randomly or in a block form.
In the component (b1), the distribution of the number of added moles of E ¹ O or P ¹ O is not particularly limited, and is likely to vary depending on the reaction method when the component (b1) is produced. For example, the distribution of the number of added moles of E ¹ O or P ¹ O is such that ethylene oxide or propylene oxide is converted into a hydrophobic group raw material (primary or secondary higher grade) using a general alkali catalyst such as sodium hydroxide or potassium hydroxide. When added to alcohols, higher fatty acids, higher fatty acid amides, etc.), they tend to have a relatively wide distribution. Also, specific alkoxylation such as magnesium oxide to which metal ions such as Al ³⁺ , Ga ³⁺ , In ³⁺ , Tl ³⁺ , Co ³⁺ , Sc ³⁺ , La ³⁺ , Mn ^{2+ and the} like described in Japanese Patent Publication No. 6-15038 are added. When ethylene oxide or propylene oxide is added to the hydrophobic group raw material using a catalyst, the distribution tends to be relatively narrow.

  As the component (b1), for example, Diadol (trade name, C13) manufactured by Mitsubishi Chemical Corporation, Neodol (trade name, a mixture of C12 and C13) manufactured by Shell, and Safol 23 (trade name, C12 manufactured by Sasol) are used. A mixture of 12 mol or 15 mol of ethylene oxide to an alcohol such as CO-1214 (trade name) or CO-1270 (trade name) manufactured by Procter & Gamble Co. 12 mole equivalents or 15 mole equivalents of ethylene oxide added to a natural alcohol such as C12 alkene obtained by trimerizing butene to the C13 alcohol obtained by subjecting the oxo method to 7 mole equivalent Ethylene oxide added (trade name: Lutensol TO7, manufactured by BASF); 9 mol equivalent of ethylene oxide added to C10 alcohol obtained by subjecting tanol to garvet reaction (trade name: Lutensol XP90, manufactured by BASF); to C10 alcohol obtained by subjecting pentanol to garvet reaction 7 mol equivalent of ethylene oxide added (trade name: Lutensol XL70, manufactured by BASF); 6 mol equivalent of ethylene oxide added to C10 alcohol obtained by subjecting pentanol to garvet reaction (product) Name: Lutensol XA60, manufactured by BASF); a secondary alcohol having 12 to 14 carbon atoms added with 9 or 15 moles of ethylene oxide (trade names: Softanol 90, Softanol 150, Japan Etc.) Can be mentioned.

_{^{R 13 -O - [(E 2}} O) p / (P 2 O) q] - (E 3 O) r -H ··· (b2)
[Wherein, R ¹³ represents an alkyl group having 8 to 18 carbon atoms or an alkenyl group having 8 to 18 carbon atoms. p represents the average number of repetitions of E ² O, q represents the average number of repetitions of P ² O, r represents the average number of repetitions of E ³ O; p, q, r are p> 1, r > 1, 0 <q ≦ 3, p + r = 10-20. E ² O represents an oxyethylene group, P ² O represents an oxypropylene group, E ³ O represents an oxyethylene group, and E ² O and P ² O in (E ² O) _p / (P ² O) _q It may be mixed. ]

In the formula (b2), R ¹³ is preferably an alkyl group having 8 to 18 carbon atoms or an alkenyl group having 8 to 18 carbon atoms, and may be linear or branched. .
In the formula (b2), the ratio of the oxyethylene group to the oxypropylene group is preferably 0.1 to 0.5, more preferably 0.1 to 0.5 in terms of q / (p + r). 0.3. When q / (p + r) is equal to or greater than the preferable lower limit, bubbles are not excessively formed and foaming is easily optimized. When q / (p + r) is less than or equal to the preferable upper limit value, an appropriate viscosity is easily obtained and gelation is easily suppressed.
Only one of E ² O and P ² O in (E ² O) _p / (P ² O) _q may be present, or may be mixed. In “(E ² O) _p / (P ² O) _q ”, E ² O and P ² O may be added in a random manner or in a block shape.

The component (b2) can be produced by a conventionally known method. For example, to an alcohol having R ¹³ derived from natural fats and oils, after addition reaction of ethylene oxide and propylene oxide in this order, or after mixed addition (random addition) of ethylene oxide and propylene oxide, ethylene oxide is added again. Can be manufactured.
When the component (b2) is used, when the liquid cleaning agent is used, the liquid cleaning agent can easily obtain an appropriate viscosity, and gelation is also suppressed. Moreover, foamability improves and biodegradability also becomes better.

Among the above-described components (Bn), in terms of good cleanability and low-temperature stability of the liquid detergent, in the formula (b1), X ¹ is —O—, and is a second one having 12 to 14 carbon atoms. A product obtained by adding 9 mol or 15 mol of ethylene oxide to a secondary alcohol (trade names Softanol 90, Softanol 150 manufactured by Nippon Shokubai Co., Ltd.), or, in the formula (b1), X ¹ is —COO—. Fatty acid ester type nonionic surfactants are preferred, and among these, fatty acid ester type nonionic surfactants are more preferred.

  Although content of (Bn) component in (B) component is not specifically limited, 10-95 mass% is preferable with respect to the total amount (100 mass%) of (B) component, and 30-90 mass% is more. preferable. If it is in the said range, higher washing | cleaning property will be acquired with respect to various stain | pollution | contamination.

The cationic surfactant (hereinafter sometimes referred to as “(Bc) component”) is not particularly limited as long as it is conventionally used in a cleaning agent, and various cationic surfactants are used. Can do.
Examples of the component (Bc) include the following.
(1) Dilong chain alkyl dishort chain alkyl type quaternary ammonium salt.
(2) Mono long chain alkyl tri short chain alkyl type quaternary ammonium salt.
(3) Tri long chain alkyl mono short chain alkyl type quaternary ammonium salt.
The “long chain alkyl” in (1) to (3) represents an alkyl group having 10 to 26 carbon atoms. As for carbon number of this alkyl group, 12-18 are preferable.
“Short-chain alkyl” refers to an alkyl group having 1 to 4 carbon atoms which may have a substituent. As for carbon number of this alkyl group, 1 or 2 is preferable. Examples of the substituent that the alkyl group may have include a phenyl group, a benzyl group, a hydroxyl group, a hydroxyalkyl group, and a polyoxyalkylene group. 2-4 are preferable and, as for carbon number of a hydroxyalkyl group, 2 or 3 is more preferable. 2-4 are preferable and, as for carbon number of the alkylene group in a polyoxyalkylene group, 2 or 3 is more preferable.

  The content of the component (Bc) in the component (B) is not particularly limited, but is preferably 0.01 to 30% by mass, and preferably 0.1 to 20% with respect to the total amount (100% by mass) of the component (B). The mass% is more preferable. If it is in the said range, when washing | cleaning clothes etc., favorable softness | flexibility will be given to clothes etc.

As the amphoteric surfactant (hereinafter sometimes referred to as “component (Bb)”), any amphoteric surfactant can be used without particular limitation as long as it is conventionally used in a cleaning agent. Can do.
Examples of the component (Bb) include imidazoline-based amphoteric surfactants and amide betaine-based amphoteric surfactants. Specifically, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine and lauric acid amidopropyl betaine are preferable.

  The content of the component (Bb) in the component (B) is not particularly limited, but is preferably 0.01 to 60% by mass, preferably 0.1 to 30% with respect to the total amount (100% by mass) of the component (B). The mass% is more preferable. If it is in the said range, detergency and defoaming property can be improved more.

(B) As a component, what contains a nonionic surfactant and a cationic surfactant is preferable. When the nonionic surfactant and the cationic surfactant coexist, a stable foam film is easily formed, so that the defoaming effect of the present invention is remarkably exhibited.
(B) A component may be used individually by 1 type and may be used in combination of 2 or more type.

0.01-80 mass% is preferable with respect to the total amount (100 mass%) of a liquid detergent, and, as for content of (B) component in a liquid detergent, 0.1-70 mass% is more preferable. If content of (B) component exists in the said range, it will become easy to obtain favorable detergency and favorable external appearance stability.
0.1-60 mass% is preferable with respect to the total amount (100 mass%) of a solid detergent, and, as for content of (B) component in a solid detergent, 1-40 mass% is more preferable. If content of (B) component exists in the said range, it will become easy to obtain favorable detergency and favorable powder physical property.

The ratio of the component (A) to the component (B) in the cleaning agent is a mass ratio represented by the component (B) / component (A) (hereinafter sometimes referred to as “(B) / (A) ratio”). 1 or more, preferably 5 or more, more preferably 10 or more. When the (B) / (A) ratio is less than the preferred lower limit, the cleaning properties of the cleaning agent may be impaired.
The upper limit of the (B) / (A) ratio is not particularly limited, but is preferably 200 or less, and more preferably 100 or less. If the (B) / (A) ratio exceeds the preferable upper limit, the defoaming property may be insufficient.

<Optional component>
The cleaning agent of the present invention may contain optional components other than the above-described components (A) to (B) as necessary within a range not impairing the effects of the present invention. As an arbitrary component, it does not specifically limit, The component normally used for a cleaning agent conventionally can be used.

<< (C) component: hydroxycarboxylic acid or salt thereof >>
In the cleaning agent of the present invention, in addition to the components (A) to (B), it is preferable to further contain (C) component: hydroxycarboxylic acid or a salt thereof. When the cleaning agent further contains the component (C), the defoaming effect can be obtained more quickly, and the rinsing properties can be further improved. In addition, when the cleaning agent contains an enzyme, the enzyme is easily stabilized.
“Hydroxycarboxylic acid” refers to a compound having a carboxy group (—COOH) and an alcoholic hydroxy group (—OH) in one molecule.
Examples of the component (C) include glycolic acid, lactic acid, hydroxybutyric acid, hydroxyisobutyric acid, mandelic acid, and citric acid.
The component (C) can be used as an alkali metal salt such as sodium or potassium, an amine salt, an ammonium salt, or the like.
Among these, lactic acid or a salt thereof is preferable because the foamed bubbles are more easily defoamed more quickly.
(C) A component may be used individually by 1 type and may be used in combination of 2 or more type.

  0.01-10 mass% is preferable with respect to the total amount (100 mass%) of a liquid detergent, and, as for content of (C) component in a liquid detergent, 0.05-5 mass% is more preferable. When the content of the component (C) is less than the preferred lower limit, it is difficult to obtain the blending effect of the component (C). When the content of the component (C) exceeds the preferable upper limit value, the defoaming property may be lowered.

  As for content of (C) component in a solid cleaning agent, 0.01-10 mass% is preferable with respect to the total amount (100 mass%) of a solid cleaning agent. When the content of the component (C) is less than the preferred lower limit, it is difficult to obtain the blending effect of the component (C). When the content of the component (C) exceeds the preferable upper limit value, the defoaming property may be lowered.

In the cleaning agent, the mass ratio represented by component (A) / component (C) (hereinafter sometimes referred to as “(A) / (C) ratio”) is preferably 1 or less, more preferably 0.1 to 1. preferable.
When the (A) / (C) ratio is less than or equal to the preferable upper limit value, the defoaming effect is easily obtained more quickly. When the (A) / (C) ratio is less than the preferred lower limit, the defoaming property may be lowered.

In the cleaning agent, the mass ratio represented by (B) component / (C) component (hereinafter sometimes referred to as “(B) / (C) ratio”) is preferably 50 or less, and more preferably 5-30.
When the (B) / (C) ratio is less than or equal to the preferable upper limit value, the defoaming effect is easily obtained more quickly. If the (B) / (C) ratio is less than the preferred lower limit, the antifoaming property may be lowered.

≪ (D) component: higher fatty acid salt≫
In the cleaning agent of the present invention, in addition to the components (A) to (B) or in addition to the components (A) to (C), it may be further referred to as a higher fatty acid salt (“(D) component”. ) Is preferably contained. The detergent further improves the antifoaming property by containing the component (D).
“Higher fatty acid salt” refers to a fatty acid salt of an acyl group having 8 or more carbon atoms.
Examples of the component (D) include higher fatty acid salts having 10 to 20 carbon atoms, and higher fatty acid salts having 10 to 16 carbon atoms are preferable.
The component (D) can be used as an alkali metal salt such as sodium or potassium, an amine salt, an ammonium salt, or the like.
(D) A component may be used individually by 1 type and may be used in combination of 2 or more type.

0.01-20 mass% is preferable with respect to the total amount (100 mass%) of a liquid detergent, and, as for content of (D) component in a liquid detergent, 0.05-10 mass% is more preferable. When the content of the component (D) is less than the preferable lower limit value, it is difficult to obtain the blending effect of the component (D). When the content of the component (D) exceeds the preferable upper limit, the appearance stability may be lowered.
The total content of the component (D) and the component (A) is preferably 0.02% by mass or more and more preferably 0.1 to 10% by mass with respect to the total amount (100% by mass) of the liquid detergent. .

0.01-10 mass% is preferable with respect to the total amount (100 mass%) of a solid cleaning agent, and, as for content of (D) component in a solid cleaning agent, 0.5-5 mass% is more preferable. When the content of the component (D) is less than the preferable lower limit value, it is difficult to obtain the blending effect of the component (D). When the content of the component (D) exceeds the preferable upper limit, the powder physical properties may be deteriorated.
The total content of the component (D) and the component (A) is preferably 0.5% by mass or more and more preferably 1 to 15% by mass with respect to the total amount (100% by mass) of the solid detergent.

In the cleaning agent, the mass ratio represented by component (A) / component (D) (hereinafter sometimes referred to as “(A) / (D) ratio”) is, for example, preferably 0.05 to 20, 1-10 are more preferable. If it is in the said range, antifoaming property can be improved more.
In the cleaning agent, the mass ratio represented by the component (B) / component (D) (hereinafter sometimes referred to as “(B) / (D) ratio”) is, for example, preferably from 0.1 to 200. 5 to 100 is more preferable. If it is in the said range, antifoaming property can be improved more.
In the cleaning agent, the mass ratio represented by component (C) / component (D) (hereinafter sometimes referred to as “(C) / (D) ratio”) is, for example, preferably 0.1 to 10, preferably 2-5 are more preferable. If it is in the said range, antifoaming property can be improved more.

≪Other optional ingredients≫
Other optional components include, for example, dispersion media, hydrotropes, detergency builders, stabilizers (sodium benzoate, citric acid, sodium citrate, polyhydric alcohol, polyethylene glycol alkyl ether, polypropylene glycol alkyl ether, etc.), Alkaline agent (monoethanolamine, diethanolamine, alkanolamine such as triethanolamine), metal ion scavenger (malonic acid, succinic acid, malic acid, diglycolic acid, tartaric acid, citric acid, or salts thereof), silicone Texture improver, antiseptic, fluorescent agent, dye transfer inhibitor, pearl agent, antioxidant (dibutylhydroxytoluene, distyrenated cresol, sodium sulfite, sodium bisulfite, etc.), enzyme (protease, amylase, lipase, cellular) , Mannanase, pectinase, etc.), general dyes or pigments as colorants, additives such as flavoring agents or emulsifying agents, pH adjusting agents and the like.

When the liquid cleaning agent is used, the liquid cleaning agent may contain a dispersion medium. Examples of the dispersion medium include water, alcohol, polyethylene glycol, or a mixture thereof, and water is particularly preferable.
10-90 mass% is preferable with respect to the total amount (100 mass%) of a liquid detergent, and, as for content of water in a liquid detergent, 20-70 mass% is more preferable. If the water content is less than the preferred lower limit, the liquid stability of the liquid detergent may deteriorate with time, and if the preferred upper limit is exceeded, the viscosity becomes too high and the usability may be lowered. .

When the liquid cleaning agent is used, the liquid cleaning agent may contain a hydrotrope agent. A conventionally well-known component can be used as a hydrotrope agent. By containing the hydrotrope agent, the storage stability of the liquid detergent can be improved.
Examples of hydrotropes include lower alcohols having 1 to 6 carbon atoms such as methanol, ethanol, propanol and butanol; glycols such as propylene glycol, butylene glycol and polyglycol (diethylene glycol, triethylene glycol, tetraethylene glycol and the like), p -Toluenesulfonic acid etc. are mentioned. A hydrotrope agent may be used individually by 1 type, and may be used in combination of 2 or more type.

Detergency builders are roughly classified into inorganic builders and organic builders.
Examples of inorganic builders include amorphous aluminosilicates; phosphates such as orthophosphates, pyrophosphates, tripolyphosphates, metaphosphates, hexametaphosphates, phytates; crystalline silicates, carbonates A composite of a salt and an amorphous alkali metal silicate can be mentioned. The form of the salt is not particularly limited, and examples thereof include alkali metal salts, alkaline earth metal salts, protonated amine salts, ammonium salts and the like.
Examples of the organic builder include nitrilotriacetate, ethylenediaminetetraacetate, β-alanine diacetate, aspartate diacetate, methylglycine diacetate, iminodisuccinate, and the like; serine diacetate, hydroxyimino Hydroxyaminocarboxylates such as disuccinate, hydroxyethylethylenediamine triacetate, dihydroxyethylglycine; Hydroxycarboxylates such as hydroxyacetate, tartrate, citrate, gluconate; pyromellitic acid salt, Cyclocarboxylates such as benzopolycarboxylates and cyclopentanetetracarboxylates; ether carboxylates such as carboxymethyltaltronate, carboxymethyloxysuccinate, oxydisuccinate, tartaric acid mono- or disuccinate; heavy Polymers having an average molecular weight of 10,000 or less of the carboxy group.
A detergency builder may be used individually by 1 type, and 2 or more types may be used in combination.

<Manufacturing method>
The manufacturing method of the cleaning agent of the present invention can be manufactured according to a conventional method according to the dosage form of the cleaning agent.
Examples of the method for producing the liquid detergent include the following methods. First, component (A) and component (B) and, if necessary, component (C), component (D), or other optional components are dispersed so as to obtain a desired blending amount in terms of the pure amount of each component. Disperse or dissolve in the medium. Subsequently, a liquid cleaning agent is obtained by adjusting to arbitrary pH using a pH adjuster.

As a manufacturing method of a solid cleaning agent, the manufacturing method similar to manufacturing methods, such as a conventionally well-known solid cleaning agent, is mentioned. For example, a dry blend method in which the component (A) and the component (B) are mixed with the component (C), the component (D) or other optional components as necessary; a dry granulation method, an agitation granulation method, and a crushing Drying / granulating method such as granulation method; paste granulation / drying method; wet granulation / drying method; spray drying method; extrusion granulation method of kneaded product, etc., and a combination of these plural methods as appropriate be able to.
For example, the method of dry-blending (A) component and (B) component and a granular arbitrary component, spraying a nonionic surfactant on this, and obtaining a granular cleaning agent is mentioned.
Further, the obtained granular cleaning agent may be formed into a desired shape such as a tablet, briquette, sheet or bar.

  As described above, the cleaning agent of the present invention contains the component (A) represented by the general formula (I), thereby quickly defoaming the foam generated by the foaming of the component (B), The rinsing property can be further enhanced.

The cleaning agent of the present invention is used, for example, as a clothing cleaning agent, tableware cleaning agent, kitchen cleaning agent, bath cleaning agent, toilet cleaning agent and the like.
Clothing cleaners are required to defoam more quickly with less water. Since the effect of this invention is exhibited notably with respect to this required characteristic, the cleaning agent of this invention is used suitably as a washing | cleaning agent for clothes.

  EXAMPLES Hereinafter, although an Example is shown and this invention is demonstrated in detail, this invention is not limited by the following description.

(Raw materials used)
<(A) component: compound represented by general formula (I)>
A-1: 2-ethylhexyl 2-ethylhexanoate (2H-2EH, synthesized by the following synthesis method). In general formula (I), X = branched alkyl group having 7 carbon atoms, Y = branched alkyl group having 8 carbon atoms.

[Synthesis Method of A-1]
A 5 L four-necked flask was charged with 1700 g of 2-ethylhexanoic acid, 1425 g of 2-ethylhexanol, and 17 g of p-toluenesulfonic acid (manufactured by Kanto Chemical Co., Inc.) as a catalyst, and was purged with nitrogen. Then, while flowing nitrogen at a flow rate of 1 mL / second, the liquid temperature was raised to 140 ° C. to carry out an esterification reaction, and water produced by the reaction was removed by distillation. After removing water, the temperature was raised to 200 ° C. while gradually reducing the pressure to 0.6 kPa to obtain a crude product. Next, 21.5 g of Hyflo Supercell (trade name, manufactured by Nacalai Tesque Co., Ltd.) (1.5 parts by mass with respect to 100 parts by mass of the crude product) as a filter aid is added to 1500 g of the crude product and stirred for 10 minutes. And uniformly dispersed. Then, pressure filtration was performed at 80 ° C. to obtain 2-ethylhexyl 2-ethylhexanoate.

<(A ′) component: Comparative product of component (A)>
A′-1: Ethyl acetate, manufactured by Junsei Chemical Co., Ltd.

<(B) component: surfactant>
B-1: LMAO, X ¹ in formula (b1) = — O—, R ¹¹ = alkyl group having 12,14 carbon atoms, R ¹² = hydrogen atom, s = 15, t = 0 (synthesized by the following synthesis method) )

[Method for synthesizing B-1]
861.2 g of natural alcohol (trade name “CO-1214”, manufactured by Procter & Gamble Co.) and 2.0 g of 30 mass% NaOH aqueous solution were collected in a pressure-resistant reaction vessel, and the inside of the vessel was purged with nitrogen. Subsequently, after dehydrating for 30 minutes at a temperature of 100 ° C. and a pressure of 2.0 kPa or less, the temperature was raised to 160 ° C. While stirring the reaction solution, 760.6 g of ethylene oxide (gaseous) was gradually added to the reaction solution. At this time, it added, adjusting the addition rate so that reaction temperature might not exceed 180 degreeC using the blowing tube. After completion of the addition of ethylene oxide, aging was performed at a temperature of 180 ° C. and a pressure of 0.3 MPa or less for 30 minutes, and then unreacted ethylene oxide was distilled off at a temperature of 180 ° C. and a pressure of 6.0 kPa or less for 10 minutes. Next, after cooling the temperature to 100 ° C. or lower, 70% by mass p-toluenesulfonic acid was added to neutralize so that the pH of the 1% by mass aqueous solution of the reaction product was about 7, and 15 mol equivalent of ethylene oxide was obtained. To give LMAO (C12 / 14-15EO).

B-2: MEE, X ¹ in general (b1) = — COO—, R ¹¹ = alkyl group having 11 and 13 carbon atoms, R ¹² = methyl group, s = 15, t = 0 (synthesized by the following synthesis method) thing).

[Method for synthesizing B-2]
According to the synthesis method described in JP-A-2000-144179 (corresponding to sample D), an alkoxylation catalyst is added to palm fatty acid methyl (in terms of mass ratio, lauric acid methyl ester / myristic acid methyl ester = 8/2). And 15 moles of ethylene oxide was added and synthesized. Specifically, it was synthesized as follows.
Alumina / magnesium hydroxide (trade name “KYOWARD 330” manufactured by Kyowa Chemical Industry Co., Ltd.) having a chemical composition of 2.5 MgO.Al ₂ O ₃ .nH ₂ O is calcined at 600 ° C. for 1 hour in a nitrogen atmosphere. 4 L of calcined alumina / magnesium hydroxide (unmodified) catalyst obtained in this manner, 2.9 mL of 0.5N potassium hydroxide ethanol solution, 280 g of lauric acid methyl ester, and 70 g of myristic acid methyl ester The autoclave was charged and the catalyst was reformed in the autoclave. Next, after the inside of the autoclave was replaced with nitrogen, the temperature was raised, and while maintaining the temperature at 180 ° C. and the pressure of 3 × 10 ⁵ Pa, 1052 g of ethylene oxide was introduced and reacted while stirring. Further, the reaction solution was cooled to 80 ° C., 159 g of water and 5 g of activated clay and diatomaceous earth were added as filter aids, respectively, and the catalyst was filtered off to obtain MEE (C12 / 14-15EO). .

B-3: LAS (linear alkyl (carbon number 10 to 14) benzenesulfonic acid Na), trade name “Lypon LH-200” (manufactured by Lion Corporation; LAS-H, pure content 96 mass%, average molecular weight 322) Is neutralized with sodium hydroxide as a pH adjusting agent to form a sodium salt.
B-4: SAS (secondary alkanesulfonic acid Na), trade name “SAS30”, manufactured by Clariant Japan Co., Ltd.
B-5: C12 cation ^{_{(C z H 2z + 1 N}} + (CH 3) 3 Cl - (z = 12)), trade name "Arquad 12-37w", Lion Akzo Co., Ltd..
B-6: C18 cation ^{_{(C z H 2z + 1 N}} + (CH 3) 3 Cl - (z = 16/18 mixed product, the mass ratio 2/8 with z = 16 and z = 18)), the trade name "Arquad "T-800", manufactured by Lion Akzo Corporation.
B-7: LAP (lauric acid amidopropyl betaine), trade name “Softazolin LPB”, manufactured by Kawaken Fine Chemical Co., Ltd.

<(C) component: hydroxycarboxylic acid or salt thereof>
C-1: Lactic acid, manufactured by Pure Chemical Co., Ltd.

<(D) component: higher fatty acid salt>
D-1: Sodium coconut fatty acid (coconut fatty acid (trade name, manufactured by NOF Corporation) neutralized with sodium hydroxide which is a pH adjuster).
D-2: C16 soap (sodium palmitate), reagent, manufactured by Kanto Chemical Co., Inc.

<Common ingredients>
Ethanol: trade name “specific alcohol 95 degree synthesis”, manufactured by Nippon Alcohol Sales Co., Ltd.
Polyethylene glycol: Trade name “PEG # 1000-L60”, polymerization degree 20, manufactured by Lion Chemical Co., Ltd.
Sodium benzoate: manufactured by Toa Gosei Co., Ltd.
p-Toluenesulfonic acid: trade name “PTS acid”, manufactured by Kyowa Hakko Kirin Co., Ltd.

The content of each component of the common components in the liquid detergent is 7% by mass of ethanol, 2% by mass of polyethylene glycol, 1% by mass of sodium benzoate, p-, with respect to the total amount (100% by mass) of the liquid detergent. Toluenesulfonic acid 1% by mass.
The total content of the common components in the liquid detergent is 11% by mass with respect to the total amount (100% by mass) of the liquid detergent.

pH adjuster: sodium hydroxide (manufactured by Tsurumi Soda Co., Ltd.) or hydrochloric acid (manufactured by Junsei Chemical Co., Ltd.). The amount added for neutralization is 0.1 to 3% by mass.
Water: Purified water. The amount blended is the balance (amount for making the amount of liquid detergent 100% by mass).

(Examples 1-9, Comparative Examples 1-3)
According to the composition shown in Tables 1 and 2, each component was dissolved in water to prepare each of the liquid cleaning agents in each example.
In the table, “appropriate amount” indicating the blending amount of the pH adjuster is an amount used to adjust the liquid detergent to pH (25 ° C.) 7.0. The “remainder” indicating the blending amount of water is an amount used to make the total amount of the liquid cleaning agent 100% by mass.
Each mass ratio shown in the table is a ratio (mass basis) of each two components contained in the liquid detergent.

<Evaluation>
[Rinse evaluation]
A cleaning solution was prepared by dissolving 0.10 g of the liquid cleaning agent in each example in 500 mL of purified water adjusted to 25 ° C. 20 mL of this cleaning solution was placed in an Epton tube, and the Epton tube was shaken 20 times at 1 stroke / second by hand.
After 0.5 minutes have passed after the Epton tube has been shaken 20 times, 3 minutes later, and 7 minutes later, the amount of each foam (mL; volume from the boundary between the foam and the cleaning solution to the top surface of the foam) ) On the scale of the Epton tube. Using this amount of foam as an index, rinsing properties were evaluated according to the following evaluation criteria. The results are shown in Tables 1 and 2.
Evaluation criteria A: The amount of foam was less than 30 mL.
○: The amount of foam was 30 mL or more and less than 40 mL.
Δ: The amount of foam was 40 mL or more and less than 70 mL.
X: The amount of foam was 70 mL or more.
The smaller the amount of foam, the higher the defoaming effect and the better the rinsing properties.

  From the results shown in Tables 1 and 2, the cleaning agents of Examples 1 to 9 to which the present invention is applied have higher defoaming effect and higher rinsing properties than the cleaning agents of Comparative Examples 1 to 3. Was confirmed.

Claims (4)

(A) component: the compound represented by the following general formula (I),
(B) component: a surfactant excluding the component (A) and higher fatty acid salt;
A cleaning agent comprising:
X-COO-Y (I)
[In formula, X is a C5-C21 branched alkyl group or a C5-C21 linear alkyl group. When X is a linear alkyl group, the carbon atom bonded to the carbon atom of the carbonyl group in formula (I) is a secondary carbon atom. Y is an alkyl group having 3 to 16 carbon atoms, or ^{- _{(R 1 O) m -R 2}} . R ¹ is an alkylene group having 2 to 4 carbon atoms. m is a number from 1 to 5. R ² is an alkyl group having 1 to 16 carbon atoms, a phenyl group, or a benzyl group. ]   Furthermore, (C) component: Hydroxycarboxylic acid or its salt is contained, The cleaning agent of Claim 1 characterized by the above-mentioned.   The cleaning agent according to claim 1, further comprising a higher fatty acid salt.   The said (B) component contains a nonionic surfactant and a cationic surfactant, The cleaning agent as described in any one of Claims 1-3 characterized by the above-mentioned.