JP6646512B2 - Liquid detergent composition for tableware - Google Patents

Description

  The present invention relates to a liquid detergent composition for dishes and a method for suppressing slippage of dishes.

  Dishwashing liquids for hand washing are required to have rich foaming at the time of washing and persistence of the foam at the time of washing. This foaming property / foaming persistence is a very important physical property that is correlated with the washing persistence, and a cleaning agent having excellent foaming property / foaming sustainability has been mainly developed so far.

Patent Literature 1 discloses a polyoxyalkylene-type nonionic surfactant having a synthetic anionic surfactant of 10 to 40% by mass and an HLB value of 18 or more, with the object of reducing sliminess during washing and rinsing. A liquid detergent composition containing 0.1 to 10% by mass and having a pH of 5 to 9 is disclosed.
Patent Literature 2 shows rich foaming at the time of washing, but has a problem that, when rinsing, instantaneous disappearance and rinsing with a small amount of water are completed, and (a) di- or monoalkyl sulfosuccinate or a salt thereof, (B) an anionic surfactant having a hydrocarbon group having 8 to 21 carbon atoms and a sulfate ester group or a sulfonate group (excluding (a)), and (c) an alkyl glyceryl ether (carbon of alkyl group) Handwashing dishwashing compositions containing a number of 6 to 18) are disclosed.

JP-A-63-61093 JP 2011-2331311A

  In general, anionic surfactants are easily slimy, and the slimyness is not limited to a touch problem, and there is also a real harm such as tableware slipping during dishwashing and falling damage. The above-mentioned Patent Documents 1 and 2 aim at reducing nulliness at the time of washing or rinsing, but they cannot be said to be sufficient in terms of the difficulty of sliding tableware during tableware washing.

  The present invention provides a liquid detergent composition for dishes and a method for suppressing the slippage of dishes, which suppresses the slippage of dishes during washing.

The present invention provides (a) a polyoxyethylene ether represented by the following general formula (a1) in an amount of 1% by mass to 15% by mass, (b) a hydrocarbon group having 10 to 14 carbon atoms, a sulfate group, The present invention relates to a liquid detergent composition for dishes, comprising an anionic surfactant having a sulfonic acid group and a group selected from salts thereof, and water.
R ^1a O (C ₂ H ₄ O) _n H (a1)
[In the formula, R ^1a represents a hydrocarbon group having 10 to 14 carbon atoms. n represents an average number of added moles, and represents a number of 25 or more and 55 or less. ]

Further, the present invention provides a tableware comprising: (b) an anionic surfactant having a hydrocarbon group having 10 to 14 carbon atoms, a sulfate ester group, a sulfonic acid group, and a group selected from salts thereof, and water. When washing dishes with a liquid cleaning composition for dishes, (a) using polyoxyethylene ether represented by the following general formula (a1) for the liquid cleaning composition for dishes, And a method for suppressing slippage.
R ^1a O (C ₂ H ₄ O) _n H (a1)
^{Wherein, R 1a} represents a hydrocarbon group having 10 to 14 carbon atoms. n represents an average number of added moles, and represents a number of 25 or more and 55 or less. ]

ADVANTAGE OF THE INVENTION According to this invention, the liquid cleaning composition for dishes which suppresses the slippage of the tableware at the time of washing | cleaning and the method of suppressing the slippage of tableware can be provided.
INDUSTRIAL APPLICABILITY The liquid detergent composition for dishes and the method for suppressing slippage of tableware according to the present invention can suppress the slippage of tableware during washing, so that the tableware can be prevented from dropping from hands during washing.

<Liquid detergent composition for dishes>
The present inventors used a combination of an anionic surfactant having a hydrocarbon group having a specific number of carbon atoms and a polyoxyethylene type nonionic surfactant having a hydrocarbon group having a specific number of carbon atoms, thereby enabling dishware to be washed. It has been found that a liquid detergent composition that suppresses slippage of the liquid can be obtained.
It is known that the present invention exerts such an effect in general that the oxyethylene group of the polyoxyethylene type nonionic surfactant is partially cationized as an oxonium ion in an aqueous solution. Here, since the number of carbon atoms of the hydrocarbon group of the anionic surfactant and that of the polyoxyethylene type surfactant are substantially the same, the packing property of both surfactants is improved, and the anionic surfactant of the anionic surfactant is anionic. The functional group is bonded to the oxyethylene-modified oxyethylene group, which makes it easier to neutralize electrostatically, reduces the adsorption of anionic surfactants to the skin (fingers), and makes it slimy during washing. Is considered to be able to be reduced. Further, by setting the number of added oxyethylene groups to a specific range, the binding property between the polyoxyethylene type surfactant and the anionic surfactant is improved, and the adsorption of the anionic surfactant to the skin is improved. It is thought that it can be suppressed.

<(A) component>
The component (a) of the present invention is a polyoxyethylene ether represented by the following general formula (a1).
R ^1a O (C ₂ H ₄ O) _n H (a1)
[In the formula, R ^1a represents a hydrocarbon group having 10 to 14 carbon atoms. n represents an average number of added moles, and represents a number of 25 or more and 55 or less. ]

In the general formula (a1), the number of carbon atoms of R ^1a is 10 or more and 14 or less, preferably 12, from the viewpoint of suppression of slipperiness.
R ^1a is preferably a straight-chain or branched-chain alkyl group or a straight-chain or branched-chain alkenyl group, more preferably a straight-chain or branched-chain alkyl group, from the viewpoint of suppression of slipperiness and storage stability. And more preferably a linear alkyl group.

Specific examples of the alkyl group include various decyl groups, various undecyl groups, various dodecyl groups (lauryl groups), various tridecyl groups, and various tetradecyl groups.
Examples of the alkenyl group include various decanyl groups, various undecanyl groups, various dodecanyl groups, various tridecanyl groups, and various tetradecanyl groups.
In addition, "various" means various isomers including n-, sec-, tert-, and iso-.

  In the general formula (a1), n is 25 or more, preferably 27 or more, more preferably 29 or more, still more preferably 35 or more, and still more preferably 38 or more from the viewpoint of suppression of slipperiness. , 55 or less, preferably 50 or less, more preferably 47 or less, still more preferably 45 or less, even more preferably 43 or less.

The method for preparing the polyoxyethylene ether compound represented by the general formula (a1) is not particularly limited. For example, if a predetermined amount of ethylene oxide is added to a fatty alcohol represented by R ^1a —OH, Good.
The polyoxyethylene ether compound represented by the general formula (a1) may be a single ethylene oxide adduct or a mixture of a plurality of ethylene oxide adducts.
In the case of a mixture of a plurality of ethylene oxide adducts, the average addition mole number of each ethylene oxide adduct is 25 or more and 55 or less, and the blending amount or content thereof is the total amount thereof.

<(B) component>
The component (b) of the present invention is an anionic surfactant having a hydrocarbon group having 10 to 14 carbon atoms and a group selected from a sulfate group, a sulfonic group, and a salt thereof.

As the hydrocarbon group of the component (b), from the viewpoint of detergency and suppression of slipperiness, 10 or more, and 14 or less, preferably 12 hydrocarbon groups, preferably a linear or branched alkyl group. is there.
The component (b) has a group selected from a sulfate group and a sulfonic group and a salt thereof from the viewpoint of detergency, and is preferably an anionic surfactant having a sulfate group or a salt thereof.

As the anionic surfactant having a sulfate ester group, from the viewpoint of detergency and suppression of slipperiness, an alkyl having a linear or branched alkyl group having 10 or more carbon atoms and preferably 14 or less, preferably 12 carbon atoms. Sulfate salts are preferred.
Further, as the anionic surfactant having a sulfate group and an oxyalkylene group, from the viewpoint of detergency and suppression of slipperiness, the carbon number is 10 or more, and 14 or less, preferably 12 linear or branched chains. The average number of moles of the oxyalkylene group having 2 to 3 carbon atoms is preferably 0.1 or more, more preferably 0.3 or more, still more preferably 0.4 or more, and preferably A polyoxyalkylene alkyl ether sulfate salt having a polyoxyalkylene group of 6 or less, more preferably 3 or less, and still more preferably 1.5 or less is suitable.
As the anionic surfactant having a sulfonic acid group, an alkane having a linear or branched alkyl group having 10 or more carbon atoms and preferably 14 or less, preferably 12 or less, from the viewpoint of detergency and suppression of slipperiness. Sulfonates are preferred.

  As the anionic surfactant of the component (b), one or more selected from alkyl sulfates, polyoxyalkylene alkyl ether sulfates, and alkane sulfonates are preferred, and alkyl sulfates and polyoxyalkylene alkyls are preferred. One or more selected from ether sulfates are more preferred, and one or more selected from polyoxyalkylene alkyl ether sulfates are even more preferred.

  As the salt of the anionic surfactant (b), an inorganic salt selected from a sodium salt, an ammonium salt, a potassium salt, a magnesium salt and the like, a monoethanol ammonium salt, a diethanol ammonium salt, a triethanol ammonium salt, a morpholinium salt and the like are selected. Organic ammonium salts are preferred.

As the component (b), a compound represented by the following general formula (b1) is preferable from the viewpoints of blending stability and foamability.
R ^1b —O— (R ^2b O) _m —SO ₃ M (b1)
Wherein, R ^1b is a linear or branched alkyl group having 10 to 14 carbon atoms, R ^2b is an ethylene group and / or a propylene group, m is an average addition mole number of 0 or more It is a number of 6 or less. M is a hydrogen atom or a cation, preferably an inorganic or organic cation. ]

In the general formula (b1), R ^1b is a linear or branched alkyl group having 10 or more carbon atoms and preferably 14 or less, preferably 12 carbon atoms, from the viewpoint of detergency and suppression of slipperiness. Is a linear alkyl group. Specifically, R ^1b is preferably an alkyl group selected from a decyl group, a dodecyl group, a tridecyl group, and a tetradecyl group, and more preferably a dodecyl group.

In the general formula (b1), m is preferably 0.1 or more, more preferably 0.3 or more, further preferably 0.4 or more, and preferably 6 or less, more preferably 3 from the viewpoint of detergency. The number is more preferably 1.5 or less.
In the general formula (b1), when R ^2b is an ethylene group, m is preferably a number of 0.1 or more, more preferably 0.5 or more, and preferably 6 or less from the viewpoint of detergency. More preferably, the number is 3 or less.
Further, in the general formula (b1), when R ^2b is a propylene group, from the viewpoint of detergency, m is preferably 0.1 or more, more preferably 0.2 or more, and still more preferably 0.4 or more. The number is preferably 1.5 or less, more preferably 1.0 or less, and still more preferably 0.8 or less.
Further, in the general formula (b1), when R ^2b is an ethylene group or a propylene group, m can be selected from these ranges.

  In the general formula (b1), M represents a hydrogen atom or an inorganic cation such as a sodium ion, an ammonium ion, a potassium ion, or a magnesium ion, a monoethanol ammonium ion, a diethanol ammonium ion, a triethanol ammonium ion, a morpholium ion, or the like. Examples thereof include organic cations, preferably inorganic cations of sodium ion, potassium ion, ammonium ion and magnesium ion.

After The process for the preparation of compounds of general formula (b1), it is not particularly limited, for example, with ethylene oxide and / or propylene oxide, in accordance with the intended fatty alcohols represented by R ^{1b -OH} by a predetermined amount added , Sulfur trioxide (liquid or gas), sulfur trioxide-containing gas, fuming sulfuric acid, chlorosulfonic acid, sulfated esterification, and neutralization with a predetermined alkali agent. The addition reaction of ethylene oxide (hereinafter referred to as EO) and / or propylene oxide (hereinafter referred to as PO) requires a catalyst, and an alkali hydroxide such as NaOH or KOH can be used. Further, a catalyst containing magnesium oxide as a main component described in JP-A-8-323200 can be used, and the former can obtain a polyoxyethylene alkyl ether having a relatively wide addition mole number distribution, and the latter can be used for comparison. A compound having an extremely narrow molar distribution of addition can be obtained. Further, as disclosed in JP-A-10-158384, it is possible to control the distribution of added mole number by using an alkali catalyst and a metal oxide catalyst together.
In the present invention, the description (mass% and mass ratio) relating to the mass of the component (b) is the mass (in terms of sodium salt) assuming that M in the general formula (b1) of the component (b) is sodium. Ratio).

<Water>
The liquid detergent composition for dishes of the present invention contains water. Any of the above-mentioned components may be dissolved, dispersed, or emulsified in water. As the water, ion-exchanged water or distilled water from which metal components have been removed, or hypochlorous acid sterilized water in which hypochlorous acid is dissolved in an amount of about 0.5 ppm to about 10 ppm can be used. Water is the balance of the composition, and is contained in an amount of 100% by mass as a whole.

  The dishwashing liquid detergent composition of the present invention contains the component (a) in an amount of 1% by mass or more, preferably 2% by mass or more, more preferably 3% by mass or more, further preferably from the viewpoint of suppressing slipperiness. 5% by mass or more, and from the viewpoint of storage stability and detergency, 15% by mass or less, preferably 12% by mass or less, more preferably 10% by mass or less, still more preferably 8% by mass or less, even more preferably 7% by mass or less. % By mass or less.

  In the dishwashing liquid detergent composition of the present invention, the component (b) is preferably 1% by mass or more, more preferably 3% by mass or more, still more preferably 5% by mass or more, and still more preferably from the viewpoint of detergency. Is not less than 7% by mass, and preferably not more than 20% by mass, more preferably not more than 18% by mass, and still more preferably not more than 15% by mass, from the viewpoint of suppressing slipperiness.

  In the dishwashing liquid detergent composition of the present invention, the mass ratio (b) / (a) of the component (b) to the component (a) is preferably 0.5 from the viewpoint of suppression of slipperiness and detergency. Or more, more preferably 0.7 or more, still more preferably 1 or more, still more preferably 1.5 or more, and from the viewpoint of suppression of slipperiness, preferably 10 or less, more preferably 7 or less, still more preferably It is at most 5, more preferably at most 4, even more preferably at most 3.

  The dishwashing liquid detergent composition of the present invention contains a polyglycoside (glycoside type nonionic surfactant) as the component (c) from the viewpoint of suppression of slipperiness, washability and storage stability. Can be.

As the component (c), a compound represented by the following general formula (c1) is preferable from the viewpoint of suppression of slipperiness, detergency, and storage stability.
R ^1c (OR ^2c ) _x G _y (c1)
[Wherein, R ^1c represents a hydrocarbon group having 8 to 18 carbon atoms, R ^2c represents an alkylene group having 2 to 4 carbon atoms, and G represents a residue derived from a reducing sugar having 5 or 6 carbon atoms. Represents a group. x represents the average number of moles added, and is a number from 0 to 5 inclusive. y represents a number whose average value is 1 or more and 5 or less. ]

In the general formula (c1), R ^1c is a straight chain having 8 or more carbon atoms, preferably 10 or more carbon atoms, and 18 or less, preferably 14 or less, from the viewpoint of suppression of slipperiness, detergency and storage stability. It is a branched alkyl group, a straight or branched alkenyl group or a straight or branched alkylphenyl group, more preferably a straight or branched alkyl group.

  In the general formula (c1), x is preferably 0 or more and 2 or less, and more preferably 0, from the viewpoint of suppression of slipperiness, detergency, and storage stability. y is preferably 1.1 or more, and more preferably 1.5 or less, and more preferably 1.4 or less, from the viewpoint of storage stability. Here, y is a value measured by the proton NMR method.

  In the general formula (c1), G is a residue derived from one or more monosaccharides selected from glucose and fructose from the viewpoint of their availability and cost. G is a residue derived from one or more polysaccharides selected from maltose and sucrose. G is preferably a residue derived from a glucose monosaccharide.

  In the dishwashing liquid detergent composition of the present invention, the component (c) is preferably 1% by mass or more, more preferably 3% by mass or more, from the viewpoint of suppression of slipperiness, washability and storage stability. It is preferably at least 5% by mass, more preferably at least 8% by mass, and from the viewpoint of cost reduction and detergency, preferably at most 20% by mass, more preferably at most 16% by mass, still more preferably at most 13% by mass. .

  In the dishwashing liquid detergent composition of the present invention, the mass ratio (c) / (a) of the component (c) to the component (a) is preferably 0. 0 from the viewpoint of suppression of slipperiness and storage stability. 3 or more, more preferably 0.5 or more, still more preferably 0.8 or more, still more preferably 1 or more, even more preferably 1.4 or more, and preferably 10 or less from the viewpoint of cost reduction and detergency. , More preferably 8 or less, still more preferably 6 or less, still more preferably 4 or less, and still more preferably 3 or less.

The dishwashing liquid detergent composition of the present invention comprises, as a surfactant other than the component (a), the component (b) and the component (c), an anionic surfactant (provided that (b) (Excluding components).
Examples of the anionic surfactant include one or more selected from linear alkylbenzene sulfonates, phosphate esters and fatty acid salts.

The dishwashing liquid detergent composition of the present invention may contain an amine oxide as a surfactant other than the component (a), the component (b), and the component (c) from the viewpoint of detergency and foamability. it can.
Examples of the amine oxide include an amine oxide having preferably an alkyl group having 8 to 18 carbon atoms, more preferably an alkyl group having 10 to 14 carbon atoms. (1) Capryldimethylamine oxide, capryldimethylamine oxide, Alkyl (8 to 18 carbon atoms) dialkyl (1 to 3 carbon atoms) amine oxide such as lauryl dimethylamine oxide and myristyl dimethylamine oxide; (2) lauric amide propyl dimethyl amine oxide; myristic amide propyl dimethyl amine oxide And fatty acid (C8 to C18) amidopropyldialkyl (C1 to C3) amine oxide such as amidopropyl palmitate dimethylamine oxide.

The dishwashing liquid detergent composition of the present invention can contain, as other surfactants, alkylamidopropylbetaine, alkylhydroxysulfobetaine, alkylaminoacetic acid betaine, amidoamino acid (imidazoline betaine) and the like.

The dishwashing liquid detergent composition of the present invention preferably contains water in an amount of 40% by mass or more, more preferably 50% by mass or more, still more preferably 60% by mass or more, and preferably 90% by mass or less, more preferably The content is 80% by mass or less, more preferably 70% by mass or less.

  The pH at 25 ° C. of the dishwashing liquid composition of the present invention is preferably 5 or more, more preferably 6 or more, from the viewpoint of suppression of slipperiness, detergency and storage stability, and from the same viewpoint. , Preferably 9 or less, more preferably 8 or less, and still more preferably 7 or less.

  The viscosity at 20 ° C. of the dishwashing liquid detergent composition of the present invention is preferably 50 mPa · s or more, more preferably 100 mPa · s or more, and preferably 500 mPa · s or less, from the viewpoint of convenience during use. More preferably, it is 400 mPa · s or less.

The dishwashing liquid detergent composition of the present invention includes a solvent, a hydrotrope, a dispersant, a pH adjuster, a thickener, a viscosity adjuster, a fragrance, a coloring agent, and an oxidizing agent as long as the object of the present invention is not impaired. Components such as an inhibitor, a preservative, a foam inhibitor, a bleach, and a bleach activator (however, those which do not correspond to the components (a) to (c)) can be added.
From the viewpoint of washing dishes by hand, the content of the solvent in the composition of the present invention is preferably 3% by mass or less, more preferably 1% by mass or less.

  The dishwashing liquid composition of the present invention is suitable as a dishwashing composition for hand washing.

  The present invention can also provide a method for producing a liquid detergent composition for tableware, comprising mixing component (a) in an amount of 1% by mass to 5% by mass, component (b) and water. As the components to be mixed, the above-mentioned component (c) and other components can be adopted, and the preferred embodiments are also the same.

<Washing method>
The liquid detergent composition for dishes of the present invention is suitable for washing dishes by hand. The washing liquid used for hand washing is obtained using the dishwashing liquid detergent composition of the present invention, and a stock solution of the composition or a diluting solution containing water is used. As a specific hand-washing method, washing the dishes by hand-washing the dishes with a flexible material to which a washing liquid using the dishwashing composition for hand-washing of the present invention is adhered, and then rinsing with water. Method. For example, the composition of the present invention is adhered to a flexible material such as a sponge containing water, and the cleaning liquid is held. The total concentration of the component (a) and the component (b) in the cleaning liquid held by the flexible material is preferably at least 1,000 ppm, more preferably at least 2,000 ppm, and preferably at most 30,000 ppm, further at 20,000 ppm. Hereinafter, it is more preferable that the content be 10,000 ppm or less from the viewpoint of detergency and slip resistance.

Further, as another specific hand-washing method, the dishes are immersed in a washing liquid obtained by diluting the dishwashing liquid composition of the present invention with water, and then the dishes are washed by hand using a flexible material such as a sponge. Then, there is a method of washing dishes, in which rinsing is performed using water. The time for immersing the tableware is preferably 1 minute or more, more preferably 3 minutes or more, still more preferably 5 minutes or more, still more preferably 10 minutes or more, and most preferably 30 minutes or more, from the viewpoint of improving the washability. It is preferably 24 hours or less, more preferably 12 hours or less, still more preferably 6 hours or less, still more preferably 3 hours or less, and most preferably 1 hour or less. The total concentration of the component (a) and the component (b) in the washing liquid for immersing tableware is preferably 100 ppm or more, more preferably 200 ppm or more, and preferably 3,000 ppm or less, further 2,000 ppm or less, and further 1,000 ppm or less. Is preferred from the viewpoint of rinsing properties and foam suppressing properties.

The present invention also relates to a dishwashing liquid detergent composition containing (b) and water, wherein the component (a) is used in the dishwashing liquid detergent composition when washing dishes, so Can be provided a method of suppressing the slippage of tableware in the above.
The method described in the present invention for suppressing the slippage of tableware during dishwashing can be appropriately applied to the items described for the dishwashing liquid detergent composition of the present invention.

  Using the following components, the liquid detergent composition for dishes shown in Table 1 was prepared, and the following items were evaluated. Table 1 shows the results. The dishwashing liquid detergent composition in Table 1 was prepared by a conventional method. That is, the components shown in Table 1 were added to an appropriate amount of ion-exchanged water and dissolved at room temperature (25 ° C.), and then citric acid or potassium hydroxide was added to adjust the pH (25 ° C.). In addition, all the mass% of the compounding component in Table 1 is a numerical value based on an effective component. The component (b) indicates mass% based on the amount as a sodium salt.

<Ingredients>
Component (a) Polyoxyethylene (29) lauryl ether: manufactured by Kao Corporation, Emulgen 129L, wherein in Formula (a1), R ^1a is a straight-chain alkyl group having 12 carbon atoms, and n is 29. Polyoxyethylene (40) lauryl ether: Emulgen 140, manufactured by Kao Corporation. In the general formula (a1), R ^1a is a straight-chain alkyl group having 12 carbon atoms, and n is a nonionic surfactant having 40. Oxyethylene (47) lauryl ether: manufactured by Kao Corporation, Emulgen 150, in the general formula (a1), R ^1a is a straight-chain alkyl group having 12 carbon atoms, and n is 47 a nonionic surfactant.

(A ') component (comparative component of (a) component)
-Polyoxyethylene (12) lauryl ether: manufactured by Kao Corporation, Emulgen 120, in the general formula (a1), ^R1a is a linear alkyl group having 12 carbon atoms, and n is a nonionic surfactant having 12. Ethylene (21) lauryl ether: Emulgen 121, manufactured by Kao Corporation. In the general formula (a1), R ^1a is a straight-chain alkyl group having 12 carbon atoms, and n is 21. ) Stearyl ether: Emulgen 350, manufactured by Kao Corporation. In the general formula (a1), R ^1a is a linear alkyl group having 18 carbon atoms, and n is 50. A nonionic surfactant / polyoxyethylene (30) oleyl ether : Emulgen 430, manufactured by Kao Corporation. In the general formula (a1), R ^1a is a linear alkenyl group having 18 carbon atoms, and n is a nonionic surfactant having 30.

Component (b) C12 (PO) 0.6AS: Polyoxypropylene alkyl ether sulfate salt having a straight-chain alkyl group having 12 carbon atoms produced in the same manner as in Example 3 of JP-A-2009-035714 [general formula In (b1), R ^1b is a linear alkyl group having 12 carbon atoms, R ^2b is a propylene group, m is 0.6, and M is sodium. That is, after adding an average of 0.6 mol of a propyleneoxy group to 1 mol of a natural alcohol having an alkyl chain of 12 carbon atoms, sulfating with sulfur trioxide and neutralizing with an aqueous sodium hydroxide solution, the component (b) I got
Component (c) Alkyl polyglycoside: AG-124, manufactured by Kao Corporation. In the general formula (c1), R ^1c is a linear alkyl group having 12 carbon atoms, x is 0, and G is a residue derived from glucose; a nonionic surfactant wherein y is 1.3

Other surfactants LAS: sodium dodecylbenzenesulfonate, manufactured by Kao Corporation, Neoperex G-25
Amine oxide: lauryl dimethylamine oxide, manufactured by Kao Corporation, Amphitol 20N

<Evaluation method>
(1) Evaluation of Difficulty of Slipping Tableware During Washing 1 g of the liquid detergent composition for tableware shown in Table 1 and 30 mL of tap water were mixed with a commercially available new sponge (115 mm × 75 mm × 35 mm flexible absorber, trade name) : Cyclone, sales agency: Cyclone Co., Ltd.), rub it by hand 5 times and make it bubbling, then rapeseed on tableware with model soil prepared in advance (1 g of rapeseed oil applied to a 25 cm diameter ceramic flat plate) The oiled surface was rubbed and washed 5 times. Thereafter, the degree of slippage due to the touch of the finger when the same portion of the pottery dish that had been scrubbed was slid several times with a finger was determined according to the following evaluation criteria.
5 points: No slippage after 1 or 2 times.
4 points: No more slipping after 3 or 4 times.
3 points: No slippage after 5 or 6 times.
2 points: No slippage after 7 or 8 times.
1 point: I stopped slipping more than 9 times.

(2) Storage stability 100 g of the dishwashing liquid detergent composition shown in Table 1 was used in PS-No. No. 11 standard glass bottles were filled, left in a thermostat at -5 ° C, and stored for 20 days. The state of the appearance of the liquid detergent composition for tableware after storage was visually observed and evaluated according to the following criteria. The liquid detergent compositions for dishes shown in Table 1 were all uniform and transparent at the time of preparation.
A: Uniform and transparent at -5 ° C.
B: Despite turbidity at −5 ° C., a change in state such as separation or precipitation, when the temperature was returned to room temperature (25 ° C.), it was uniformly transparent.
C: There was a state change such as turbidity, separation, or precipitation at -5 ° C, and even when the temperature was returned to room temperature (25 ° C), it did not become uniformly transparent.

  In Table 1, the values of (b) / (a) and (c) / (a) in Comparative Examples 2 to 5 are values calculated from (b) / (a ′) and (c) / (a ′). It is.

(Discussion)
In contrast to Comparative Example 1 which does not contain the component (a) of the present invention and Comparative Examples 2 to 5 which contain the component (a ') which is a comparative component of the component (a) of the present invention, Examples 1 to 5 of the present invention. 7 shows that the tableware is excellent in the difficulty of sliding during washing.

Claims (8)

(A) 1% by mass to 15% by mass of a polyoxyethylene ether [hereinafter, referred to as a component (a)] represented by the following general formula (a1), and (b) an anion represented by the following general formula (b1). A liquid detergent composition for dishes, comprising a surfactant [hereinafter, referred to as a component (b)] and water.
R ^1a O (C ₂ H ₄ O) _n H (a1)
[In the formula, R ^1a represents a hydrocarbon group having 10 to 14 carbon atoms. n represents an average number of added moles, and represents a number of 25 or more and 55 or less. ]
R ^1b —O— (R ^2b O) _m —SO ₃ M (b1)
[Wherein, R ^1b is a linear or branched alkyl group having 10 to 14 carbon atoms, R ^2b is a propylene group, m is an average addition mole number, and is 0.1 to 1.5. The following numbers. M is a hydrogen atom or a cation ion. ]   The liquid detergent composition for dishes according to claim 1, wherein the mass ratio (b) / (a) of the component (b) to the component (a) is 0.5 or more and 10 or less.   The liquid detergent composition for dishes according to claim 1 or 2, further comprising (c) a polyglycoside [hereinafter, referred to as a (c) component].   The liquid detergent composition for dishes according to claim 3, wherein the composition comprises 1% by mass or more and 20% by mass or less of the component (c).   The liquid detergent composition for dishes according to claim 3 or 4, wherein the mass ratio (c) / (a) of the component (c) and the component (a) is 0.3 or more and 5 or less.   The dishwashing liquid composition according to any one of claims 1 to 5, which is used for hand washing.   A dishwashing method, comprising applying a washing liquid using the dishwashing liquid detergent composition according to any one of claims 1 to 5 to a dish surface and washing the dishes by hand. (B) A liquid detergent composition for dishes, comprising an anionic surfactant having a hydrocarbon group having 10 to 14 carbon atoms, a sulfate group, a sulfonic group, and a group selected from salts thereof, and water. When washing dishes with a product, (a) using a polyoxyethylene ether represented by the following general formula (a1) in the dishwashing liquid detergent composition suppresses slippage of dishes during dishwashing. Method.
R ^1a O (C ₂ H ₄ O) _n H (a1)
[In the formula, R ^1a represents a hydrocarbon group having 10 to 14 carbon atoms. n represents an average number of added moles, and represents a number of 25 or more and 55 or less. ]