JP2009155594A - Liquid detergent composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a concentrated type liquid detergent composition having good detergency and good bubble extinguishing during rinsing and able to reduce retainability of the detergent composition. <P>SOLUTION: The concentrated type liquid detergent composition comprises a 50-80 mass% ethylene oxide adduct (A) component, a 0.1-5 mass% specific fatty acid or its salt (B) component and a 0.1-10 mass% (C) component, wherein the (A) component is expressed by general formula (1) (wherein, R<SP>1</SP>is a 11-13C straight chain or branched chain alkyl group or alkenyl group; R<SP>2</SP>is a 1-3C alkyl group; n1 represents an average number of moles of ethylene oxide added and is 10-20) and has a ≥30 mass% narrow ratio, and the (C) component is expressed by general formula (3) (wherein, R<SP>4</SP>is H or a 1-3C alkyl group; n2 represents an average number of moles of ethylene oxide added and is 0-5,000, but when n2=0, R<SP>4</SP>does not represent H.). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a liquid cleaning composition, and more particularly to a concentrated liquid cleaning composition.

Drum-type washing machines are becoming increasingly popular in response to recent changes in the laundry environment, in particular consumer awareness of water conservation. However, in addition to the low amount of water at the time of washing, the amount of water at the time of rinsing is also set low, so consumers are worried about whether detergent actually remains in the clothes when rinsing with disbelief in cleaning power I feel more and more voices.
In other words, consumers are demanding a detergent having the same high detergency as before (with moderate foaming that feels washing), and a foam that disappears even with a small amount of water and the number of times of rinsing so that the detergent does not remain on the clothes.

In order to respond to such demands of consumers, there are many proposals to improve rinsing properties. For example, a proposal to add a fatty acid salt to a general nonionic surfactant (Patent Document 1), or a nonionic interface with relatively low foaming obtained by adding propylene oxide or butylene oxide to an ethylene oxide adduct of a higher alcohol Many liquid detergent compositions containing an active agent have also been proposed. (Patent Documents 2 to 4)
Further, a concentrated liquid detergent composition containing a nonionic surfactant obtained by adding ethylene oxide and propylene oxide to a higher alcohol having 8 to 18 carbon atoms by a specific addition method has been proposed. (Patent Document 5)
In addition, a concentrated type containing a nonionic surfactant obtained by reacting a fatty acid alkyl ester with an alkylene oxide in the presence of a catalyst comprising magnesium oxide to which one or more of specific metal ions are added. Liquid detergent compositions have been proposed. (Patent Document 6)
However, none of the conventional liquid detergent compositions can reduce the foaming property at the time of rinsing and the residual property of the detergent composition at the time of rinsing.
JP 2002-167600 A JP-A-11-269497 JP 2001-334139 A JP 2001-164298 A JP 2003-105377 A JP-A-5-222396

General-purpose nonionic surfactants such as polyoxyethylene alkyl ether used as a cleaning component in liquid detergent compositions are easy to obtain foam that feels clean, but maintain good foaming when rinsed. It is difficult to do.
For this reason, propylene oxide or butylene oxide is added to conventional general-purpose nonionic surfactants to suppress foaming, and improvement of foam breakage during rinsing is attempted.
However, these special nonionic surfactants are economically disadvantageous because the reaction process is generally complicated.

  The present invention has been made in view of the above circumstances, and provides a concentrated type liquid detergent composition capable of reducing good detergency, foamability during rinsing, and persistence of the detergent composition during rinsing. The issue is to provide.

In order to solve the above-mentioned problems, the present invention proposes a concentrated liquid cleaning composition containing 50 to 80% by mass of the following component (A), component (B), and component (C). .
Component (A) is an ethylene oxide adduct represented by the following general formula (1), and an ethylene oxide adduct having a different mole number of ethylene oxide added and having a narrow ratio of 30% by mass or more. Oxide adduct.
(In the formula, R ¹ is a linear or branched alkyl group or alkenyl group having 11 to 13 carbon atoms; R ² is an alkyl group having 1 to 3 carbon atoms, and n1 is an average addition of ethylene oxide. Shows the number of moles and is 10-20.)

The component (B) is a fatty acid represented by the following general formula (2) or a salt thereof, and its content is 0.1 to 5% by mass.
(In the formula, R ³ is a linear or branched alkyl group or alkenyl group having 7 to 17 carbon atoms.)

(C) A component is represented by following General formula (3), The content is 0.1-10 mass%.
(In the formula, R ⁴ is H or an alkyl group having 1 to 3 carbon atoms, n2 represents the average number of added moles of ethylene oxide, and is 0 to 5000. However, when n2 = 0, R ⁴ is not H. .)

  Here, in the present specification and claims, the “narrow ratio indicating the distribution ratio of ethylene oxide adducts having different numbers of added moles of ethylene oxide” is represented by the following formula (S): To do.

(In the formula, nmax represents the number of moles of ethylene oxide added in the ethylene oxide adduct most present in the entire ethylene oxide adduct. I represents the number of moles of ethylene oxide added. Yi represents the total ethylene oxide addition. (The ratio (mass%) of the ethylene oxide adduct whose addition mole number of ethylene oxide which exists in a body is i is shown.)

  As used herein, the term “concentrated type” includes a total surfactant concentration in the liquid detergent composition of 50% by mass, preferably 55% by mass or more.

  ADVANTAGE OF THE INVENTION According to this invention, the concentration type liquid detergent composition which can reduce the residual property of the detergent composition at the time of a good detergency, the foaming property at the time of a rinse, and a rinse can be provided.

  The liquid detergent composition of the present invention is a component (A) which is an ethylene oxide adduct represented by the general formula (1) and a fatty acid represented by the general formula (2) or a salt thereof (B ) Component and the component (C) represented by the general formula (3), and the pH at 25 ° C. is 5 to 8.

<(A) component>
The component (A) in the present invention is a fatty acid polyoxyethylene alkyl ether represented by the general formula (1). This is an ethylene oxide adduct having a narrow ratio of 30% by mass or more, which indicates a distribution ratio of ethylene oxide adducts having different numbers of moles of ethylene oxide added.
By using this component (A), the liquid detergent composition of the present invention does not cause gelation or the like even if it contains a high concentration of surfactant, and contains a large amount of surfactant alone. be able to. Here, “a single surfactant is contained in a large amount” means that the surfactant is contained alone in an amount of 50% by mass or more in the liquid detergent composition.
Moreover, the liquid cleaning composition of this invention is excellent in the solubility to water by containing (A) component, and becomes easy to obtain high detergency. Furthermore, even if it contains a high concentration of surfactant, the viscosity does not remarkably increase (gelation), and a concentrated liquid detergent composition having good fluidity can be produced.

In the general formula (1), R ¹ is a linear or branched alkyl group or alkenyl group having 11 to 13 carbon atoms.
R ² is an alkyl group having 1 to 3 carbon atoms, preferably a methyl group.
n1 shows the average addition mole number of ethylene oxide, and is 10-20. Preferably, it is 12-18 from the point of the improvement of the detergency with respect to sebum dirt, mud dirt, etc. and the liquid stability (for example, stability over time at low temperature) of the liquid detergent composition.

The synthesis method is not limited, but generally a two-stage reaction method in which polyoxyethylene alkyl ether or fatty acid polyoxyethylene ether is synthesized and then esterified, and ethylene oxide is directly added to fatty acid alkyl ester. There is a one-step reaction method.

  The component (A) having a narrow ratio of 30% by mass or more is not particularly limited. For example, ethylene oxide is directly added to a fatty acid alkyl ester using a surface-modified composite metal oxide catalyst. It can be easily manufactured by a method (see JP 2000-144179 A).

(A) A component can be used 1 type or in mixture of 2 or more types.
(A) Content of a component is 50-80 mass% in a liquid detergent composition, Preferably, it is 55-65 mass%. In addition, when the content of the component (A) is 50% by mass or more, preferably 55% by mass or more, a concentrated liquid detergent composition containing a high concentration surfactant is obtained. Moreover, the effectiveness (commercial value) as a concentrated type liquid detergent composition becomes high. On the other hand, when the content is 80% by mass or less, preferably 65% by mass or less, an increase in the viscosity of the liquid detergent composition at a low temperature is suppressed.

<(B) component>
In the present invention, the component (B) is a fatty acid or a salt thereof represented by the general formula (2). In the present invention, the component (B) is particularly useful for improving the foaming property during rinsing.

The component (B) is not particularly limited. In the general formula (2), R ³ is a linear or branched alkyl group or alkenyl group having 7 to 17 carbon atoms, and preferably has a carbon number. Alkyl groups derived from 11 to 17 or coconut oil are preferred. Salts include sodium, potassium, ammonium and alkanolamine.

(B) A component can be used 1 type or in mixture of 2 or more types.
(B) Content of a component is 0.1-5 mass% in a liquid detergent composition, Preferably it is 0.1-3 mass%. By being more than the lower limit of the range, the foaming property at the time of rinsing of the liquid detergent composition is easily improved. On the other hand, when the amount is not more than the upper limit, a sufficient effect of improving the foaming property at the time of rinsing can be obtained, which is economically advantageous.

<(C) component>
The component (C) is a compound represented by the general formula (3). (C) By containing a component, the residual property of the cleaning composition at the time of a rinse can be reduced. In addition, improvement in liquid stability of the liquid detergent composition can be expected.

As a specific example, when R ⁴ is H in the general formula (3), it is polyethylene glycol. Generally n is 5 or more, and this weight average molecular weight 200-220,000 is mentioned. Among them, PEG1000 (C-1) (hereinafter referred to as (C-1) component) having n of around 23 is preferable.
When R ⁴ is an alkyl group having 1 to 3 carbon atoms and n is 0, it is a lower alcohol, and methanol (C-2) (hereinafter referred to as the (C-2) component) and ethanol (C -3) (hereinafter referred to as component (C-3)).
When R ⁴ is an alkyl group having 1 to 3 carbon atoms and n is 1 to 5000, glycol monoether, diglycol monoether, polyethylene glycol monoether and the like can be mentioned. Preferred are methyl diglycol, ethyl diglycol and propyl diglycol.

(C) component can be used 1 type or in mixture of 2 or more types.
(C) Content of a component is 0.1-10 mass% in a liquid detergent composition, Preferably it is 0.1-8 mass%. When it is in the range of 0.1 to 10% by mass, the residual property of the cleaning composition at the time of rinsing can be reduced, and a liquid stability effect can be obtained, which is economically advantageous.

<Optional component>
In addition to the component (A), the component (B), and the component (C), other optional components can be blended in the liquid detergent composition of the present invention as necessary.

Surfactants that can be blended include polyoxyethylene alkyl sulfates, α-olefin sulfonates, alkylbenzene sulfonates, α-sulfo fatty acid salts, phosphate ester surfactants, acyl alaninates, acyl tau. Anionic surfactants other than the component (B) such as a rate can be mentioned, and 0 to 10% by mass can be blended in the liquid detergent composition of the present invention.
In addition, nonionic surfactants other than the component (A) such as polyoxyalkylene alkyl ether, fatty acid alkanolamide, fatty acid alkanol glucamide, alkyl polyglucoside, alkyl glyceryl ether, sucrose fatty acid ester and the like can be mentioned. It is possible to mix | blend 0-20 mass% in a liquid detergent composition.
In addition, amphoteric or amphoteric surfactants such as alkyl acetate betaines, alkanolamidopropyl acetate betaines, alkyl imidazolines, and alkyl alanines, and cationic surfactants such as alkyl trimethyl ammonium salts, dialkyl dimethyl ammonium salts, and alkyl pyridinium salts. .

Examples of the aromatic sulfonic acid or salt thereof that is a hydrotrope include toluene sulfonic acid, xylene sulfonic acid, cumene sulfonic acid, substituted or unsubstituted naphthalene sulfonic acid, and the like.
Examples of the salt include sodium salt, potassium salt, calcium salt, magnesium salt, ammonium salt, alkanolamine salt and the like.
Aromatic sulfonic acid or a salt thereof can be used alone or in combination. The content of the aromatic sulfonic acid or a salt thereof is preferably 0.1 to 15% by mass, more preferably 0.5 to 10% by mass in the liquid detergent composition. Within this range, the effect of suppressing the formation of a film formed by gelation of the liquid detergent composition on the liquid surface of the liquid detergent composition is further improved.

Moreover, an alkaline agent can be mix | blended with the liquid cleaning composition of this invention. Examples of the alkali agent include alkanolamine, and monoethanolamine, diethanolamine, and triethanolamine are preferable.
Alkaline agents can be used alone or in combination. The content of the alkaline agent is preferably 0.5 to 5% by mass in the liquid detergent composition.

The liquid detergent composition of the present invention preferably contains an antioxidant. By containing an antioxidant, a large amount of the component (A) can be stably blended into the liquid detergent composition alone. Moreover, it becomes easy to obtain high detergency.
The antioxidant is not particularly limited, and an antioxidant that can be generally used for a liquid detergent composition can be used. Of these, phenolic antioxidants are preferred because of their good detergency and liquid stability, and monophenolic antioxidants such as dibutylhydroxytoluene and butylhydroxyanisole; 2,2′-methylenebis (4-methyl- Bisphenol antioxidants such as 6-t-butylphenol; polymer phenolic antioxidants such as dl-α-tocopherol are more preferred, monophenolic antioxidants and polymer phenolic antioxidants are more preferred. .
Of the monophenol antioxidants, dibutylhydroxytoluene is particularly preferred. Among the polymer type phenolic antioxidants, dl-α-tocopherol is particularly preferable.
Antioxidants can be used alone or in combination.
It is preferable that content of antioxidant is 0.01-1 mass% in a liquid detergent composition, More preferably, it is 0.02-0.8 mass%. By being more than the lower limit of the range, the liquid stability of the liquid detergent composition is improved, and good detergency is easily obtained. On the other hand, by being below the upper limit value, a sufficient effect of improving liquid stability is obtained, which is economically advantageous.

Furthermore, the liquid detergent composition of the present invention contains 0 to 2% by mass of a recontamination inhibitor such as polyvinylpyrrolidone or carboxymethylcellulose for the purpose of preventing recontamination; lipase, cellulase, amylase, protease, etc. for the purpose of improving detergency. 0 to 1% by mass of the enzyme; 0 to 3% by mass of calcium salts such as boric acid, borax, formic acid or salts thereof, calcium chloride, calcium sulfate for the purpose of stabilizing the enzyme; dimethyl silicone for the purpose of improving the texture; 0 to 5% by mass of silicone such as polyether-modified silicone and amino-modified silicone; 0 to 1% by mass of fluorescent whitening agent such as distyrylbiphenyl type for the purpose of improving whiteness of white clothing; 0.0001 to 0.001% by mass of pigment such as acid dye for the purpose of coloring; for liquid stability and antiseptic properties Sodium benzoate, a preservative such as caisson CG (trade name) may be blended with 0.001 wt%, etc. Te.
Examples of the fragrance for aroma include a fragrance composition containing a fragrance component, a solvent and a stabilizer described in JP-A No. 2002-146399, and 0 in the liquid detergent composition of the present invention. 0.01 to 1% by mass can be blended.

Furthermore, examples of the pH adjuster include inorganic acids such as hydrochloric acid, sulfuric acid, and phosphoric acid; organic acids such as polyvalent carboxylic acids and hydroxycarboxylic acids; sodium hydroxide, potassium hydroxide, ammonia, and the like. From this point, an organic acid is preferable.
Specific examples of the organic acid include polyvalent carboxylic acids such as succinic acid, maleic acid, fumaric acid or salts thereof; hydroxycarboxylic acids such as citric acid, malic acid, glycolic acid, p-hydroxybenzoic acid or salts thereof Among them, citric acid or a salt thereof is particularly preferable.
A pH adjuster can be used 1 type or in mixture of 2 or more types. The pH adjuster is appropriately added in an amount for adjusting the pH of the liquid detergent composition at 25 ° C. to 5-8.
The pH of the liquid detergent composition (controlled at 25 ° C.) is a value measured by a pH meter (product name: HM-30G, manufactured by Toa DKK Corporation).

The liquid detergent composition of the present invention can be produced based on a conventional method, preferably using water as a solvent.
The method of use is a normal method of use, that is, a method in which the liquid detergent composition of the present invention (product of the present invention) is poured into water together with the laundry during washing, a method of directly applying the product of the present invention to dirt, The method etc. which dissolve | melt an invention product in water beforehand and immerse clothing are mentioned. Also preferred is a method in which the product of the present invention is applied to the laundry and then allowed to stand as appropriate, followed by normal washing using a normal laundry solution.
In that case, the usage-amount of this invention product can be decreased to substantially half or less rather than the usage-amount of the conventional liquid detergent composition. For example, a conventional liquid detergent composition is mainly washed by introducing 20 mL of the liquid detergent composition into 30 L of tap water as a standard usage amount. In the liquid cleaning composition of the present invention, even if 10 mL of the liquid cleaning composition is poured into 30 L of tap water and cleaned, sufficient cleaning performance can be exhibited.

  Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. “%” Means “% by mass” unless otherwise specified.

≪Manufacture of liquid detergent composition≫
Liquid detergent compositions having the compositions shown in Tables 1 and 2 were produced as follows according to a conventional method.
First, the component (A) was placed in a cylindrical glass bottle (diameter 50 mm, height 100 mm) containing a 2 cm stir bar. Next, a mixed solution of the component (B), the component (C), and the common component was added (optional components were added as necessary), and the stirring bar was stirred at 400 rpm. Then, after adding purified water described in the common ingredients so that the total amount (the total amount is 100 parts by mass) is 95 parts by mass, stirring and mixing, the pH is adjusted, and the remaining purified water is added to obtain a liquid. A cleaning composition was prepared.
The pH was finely adjusted by appropriately adding a pH adjuster (sodium hydroxide or sulfuric acid) so that the pH of the liquid detergent composition at 7.0 was 7.0.
In addition, the unit of the compounding quantity in Table 1 and Table 2 is the mass%, and shows the pure amount conversion amount. Further, the amount of water was adjusted so that the total amount was 100% by mass. Below, the component shown in the table | surface is demonstrated.

<Method for Measuring Narrow Rate of Component (A)>
The distribution of ethylene oxide adducts with different numbers of moles of ethylene oxide was measured under the following measurement conditions. And the narrow rate (mass%) of (A) component was computed based on the said Numerical formula (S).
(Conditions for measuring the distribution of ethylene oxide adducts by HPLC)
Apparatus: LC-6A (manufactured by Shimadzu Corporation)
Detector: SPD-10A
Measurement wavelength: 220 nm
Column: Zorbax C8 (manufactured by Du Pont)
Mobile phase: acetonitrile / water = 60/40 (volume ratio)
Flow rate: 1 mL / min
Temperature: 20 ° C

<Description of ingredients shown in the table>
Component (A) _{A-1: C 11 H 23} CO (OC 2 H 4) 15 OCH 3, narrow of 65 wt%; synthetic.
A-2: 85 g of A-1 and 0.02 g of dibutylhydroxytoluene were dissolved in purified water to make the total amount 100 g.
A-3: C ₁₁ H ₂₃ CO (OC ₂ H ₄ ) ₁₅ OCH ₃ , narrow ratio 37% by mass; synthetic product.
A-4: C11H23CO (OC2H4) 15OCH3 and C13H27CO (OC2
H4) 8/2 mixture by mass ratio with 15OCH3, narrow ratio 65% by mass; synthetic product.
A-5 (comparative product): C ₁₇ H ₃₃ CO (OC ₂ H ₄ ) ₁₅ OCH ₃ , narrow ratio 65% by mass; synthetic product.
A-6 (comparative product): C ₁₁ H ₂₃ CO (OC ₂ H ₄ ) ₁₅ OCH ₃ , narrow ratio 25% by mass; synthetic product.
However, A-1 and A-5 are synthetic products manufactured according to the synthesis method described in JP-A No. 2000-144179 (Note that A-1 is a sample described in JP-A No. 2000-144179) D corresponds to D. Similarly, A-5 corresponds to the sample F described in the publication). A-6 is a synthetic product produced by using a catalyst produced according to Example 1 described in JP-A-4-279552 (corresponding to sample A1 described in JP-A-5-222396). ). A-4 is the same as the synthesis method of A-1, except that in the synthesis method of A-1, 280 g of lauric acid methyl ester and 70 g of myristic acid methyl ester were used, respectively, and ethylene oxide 1052 g was introduced. Produced by the method.

A-3 was synthesized as follows.
25 g of alumina hydroxide / magnesium (Kyowa Chemical Industry Co., Ltd., trade name: Kyoward 300) having a chemical composition of 2.5 MgO.Al 2 O 3 .nH 2 O was calcined at 700 ° C. for 3 hours in a nitrogen atmosphere, 14 g A calcined alumina / magnesium hydroxide was obtained. A 4-liter autoclave was charged with 1.2 g of calcined alumina / magnesium hydroxide (unmodified) catalyst, 0.4 g of 5% by weight potassium hydroxide methanol solution, and 350 g of methyl laurate, and the catalyst was reformed in the autoclave. It was. Next, after the inside of the autoclave was replaced with nitrogen, the temperature was raised, and 1079 g of ethylene oxide was introduced while the temperature was maintained at 180 ° C. and the pressure was maintained at 3 atm, and the reaction was carried out with stirring.
The resulting polyoxyethylene methyl ether of lauric acid had an average ethylene oxide addition mole number of 15 and a narrow rate of 37% by mass. Further, the reaction solution was cooled to 80 ° C., 159 g of water and 5 g of activated clay and diatomaceous earth as filter aids were added respectively, and then the catalyst was filtered off to obtain A-3.
The narrow ratio was calculated by measuring the distribution of ethylene oxide adducts having different numbers of added moles of ethylene oxide in the obtained polyoxyethylene methyl ether of lauric acid.

(B) Component B-1: Potassium laurate, manufactured by NOF Corporation, trade name: NAA-122 neutralized with potassium hydroxide.
B-2: Palm fatty acid potassium, manufactured by Nippon Oil & Fats Co., Ltd., trade name: coconut fatty acid neutralized with potassium hydroxide.

(C) Component C-1: Polyethylene glycol (weight average molecular weight 1000), manufactured by NOF Corporation, trade name: PEG # 1000
C-2: Methanol, Junsei Chemical Co., reagent special grade C-3: Ethanol, Junsei Chemical Co., reagent special grade
C-4: Methoxypolyethylene glycol, manufactured by Toho Chemical Industry Co., Ltd., trade name: MethoxyPEG-1000

Optional component Dibutylhydroxytoluene (hereinafter abbreviated as BHT): Degussa, trade name: K-NOX BHT.
Trisodium citrate dihydrate: Made by Miles (USA), trade name “Soda citrate”.
Sodium benzoate: Toagosei Co., Ltd., trade name “Sodium benzoate”.
Fragrance composition: The fragrance composition described in Tables 11 to 18 of JP-A-2002-146399.
Dye: Product name “Green 201”, manufactured by Sakai Kasei Co., Ltd.
Caisson CG: manufactured by Rohm and Haas.
Sodium hydroxide: manufactured by Tsurumi Soda Co., Ltd.
Sulfuric acid: Toho Zinc Co., Ltd.

(Common ingredients)
Trisodium citrate dihydrate: 0.2% by mass
Sodium benzoate: 0.5% by mass
Fragrance composition: 0.2% by mass
Caisson CG: 0.01% by mass
Dye: 0.0002% by mass
Sodium hydroxide or sulfuric acid: appropriate amount Purified water: balance

≪Evaluation method≫
About the obtained liquid cleaning composition, it evaluated by the method and evaluation criteria shown below, and the result was written together in Table 1, Table 2. FIG.

<Detergency evaluation method>
No. 100 cotton plain woven fabric was cut into a 10 cm square, fixed to the surface of a small container having a hemispherical surface with a radius of about 3 cm, and rubbed against the hand or face to adhere dirt. Next, this cloth was cut into four equal parts to obtain a sebum-stained cloth. Next, using Terg-O-meter as a washing tester, put 10 pieces of the above-mentioned sebum soil dirt cloth, sebum cloth, cotton melias cloth, 10 times at a washing solution of 900 mL, 120 rpm, 15 ° C. according to the desire ratio 30 times. Washed for minutes. However, the washing liquid was prepared at a ratio of 10 mL of the liquid detergent composition to 30 L of water.
Thereafter, the above 10 sebum-stained and soiled cloths were subjected to the following rinsing evaluation (residual property), and then transferred to a two-tank washing machine (manufactured by Mitsubishi Electric Corporation, product number: CW-C30A1-H1). After dehydrating for 30 minutes, it was rinsed in 30 L of tap water (15 ° C., 4 ° DH) for 3 minutes and air-dried.
The detergency was calculated according to the following formula.
Detergency (%) = (K / S of contaminated cloth−K / S of washed cloth) / (K / S of contaminated cloth−K / S of unwashed cloth) × 100 (%)
Here, K / S = (1−R / 100) ² / (2R / 100) (where R is reflectance (%)).
The cleaning power obtained by the above cleaning method and calculation method was evaluated according to the following criteria.
(Evaluation criteria for cleaning power): ○ to ◎ are acceptable range ◎: Cleaning rate is 75% or more ○: Cleaning rate is 65% to less than 75% △: Cleaning rate is 55% to less than 65% ×: Cleaning rate is less than 55%

<Evaluation of foaming property during rinsing>
As for the foaming property at the time of rinsing, 0.03 g of each liquid detergent composition was dissolved in 900 ml of water to obtain a sample solution, and the foaming property at 25 ° C. was evaluated. The measurement was performed according to the measuring method of JISK3362 using a Ross-Miles test apparatus. The foaming property was calculated by the following formula and evaluated based on the following criteria.
Foam breakability (%) = (bubble height 5 minutes after completion of dropping) / (bubble height immediately after completion of dropping) × 100 (%)
(Evaluation criteria for foaming property): ○ to ◎ are acceptable range ◎: less than 50% ○: 50% to less than 70% Δ: 70% to less than 90%
×: 90% or more

<Residual evaluation during rinsing>
Ten sheets of sebum-stained and soiled cloth under evaluation of the detergency are placed in a 200 ml beaker (100 ml of water) and stirred for 5 minutes, and then the appearance is visually confirmed.
(Residual evaluation criteria): ○ is acceptable range ○: Transparent x: Slightly cloudy

  From the results of Tables 1 and 2, it was confirmed that Examples 1 to 8 of the present invention can reduce the good detergency, the foamability during rinsing and the residual property of the cleaning composition during rinsing.

Claims (1)

The concentration type liquid detergent composition containing 50-80 mass% of following (A) component, (B) component, and (C) component.
Component (A) is an ethylene oxide adduct represented by the following general formula (1), and an ethylene oxide adduct having a different molar ratio of ethylene oxide and having a narrow ratio of 30% by mass or more. Oxide adduct.

(In the formula, R ¹ is a linear or branched alkyl group or alkenyl group having 11 to 13 carbon atoms; R ² is an alkyl group having 1 to 3 carbon atoms, and n1 is an average addition of ethylene oxide. Shows the number of moles and is 10-20.)
The component (B) is a fatty acid represented by the following general formula (2) or a salt thereof, and its content is 0.1 to 5% by mass.
(In the formula, R ³ is a linear or branched alkyl group or alkenyl group having 7 to 17 carbon atoms.)
(C) A component is a compound represented by following General formula (3), The content is 0.1-10 mass%.
(In the formula, R ⁴ is H or an alkyl group having 1 to 3 carbon atoms, n2 represents the average number of added moles of ethylene oxide, and is 0 to 5000. However, when n2 = 0, R ⁴ is not H. .)