JP2018184496A - Tableware detergent - Google Patents

Abstract

An object of the present invention is to provide a dishwashing detergent having excellent foam persistence.
The dishwashing detergent of the present invention contains the following component (A), component (B), component (C) and component (D), and is represented by component (C) / component (D). The mass ratio is 0.1-9.
(A) component: anionic surfactant.
Component (B): At least one selected from the group consisting of amphoteric surfactants and semipolar surfactants.
Component (C): 3-methoxy-3-methyl-1-butanol.
(D) Component: Nonionic surfactant.
[Selection figure] None

Description

  The present invention relates to a detergent for tableware.

Washing of tableware or cooking utensils is usually performed while pouring a dishwashing agent on the sponge. And in the detergent for tableware, the high detergency and foaming property (foam amount, foaming speed) are calculated | required with respect to the oil stain adhering to tableware or cooking utensils.
Detergents such as anionic surfactants, nonionic surfactants, amphoteric surfactants and semipolar surfactants are used as dishwashing detergents in order to improve the detergency against oil stains and foaming. The ingredients are combined in an appropriate combination.
For example, Patent Document 1 discloses a kitchen liquid detergent containing an anionic surfactant having a specific structure, an alkylamine oxide, and butyl carbitol.

JP 2013-256593 A

  However, although the liquid detergent for kitchens described in Patent Document 1 has good foamability, the foam persistence during cleaning is not sufficient.

  This invention is made | formed in view of the said situation, and aims at provision of the cleaning agent for tableware which is excellent in foam persistence.

The present invention has the following aspects.
[1] The following (A) component, (B) component, (C) component and (D) component are contained, and the mass ratio represented by (C) component / (D) component is 0.1-9. , Dishwashing detergent.
(A) component: anionic surfactant.
Component (B): At least one selected from the group consisting of amphoteric surfactants and semipolar surfactants.
Component (C): 3-methoxy-3-methyl-1-butanol.
(D) Component: Nonionic surfactant.
[2] The dishwashing detergent according to [1], wherein the component (D) is a branched alkyl alkoxylate.
[3] The total content of the component (C) and the component (D) is 5 to 20% by mass with respect to the total mass of the dishwashing agent, according to [1] or [2]. Tableware cleaning agent.
[4] The mass ratio represented by ((C) component + (D) component) / ((A) component + (B) component + (C) component + (D) component) is 0.1 to 0.6. The cleaning agent for tableware according to any one of [1] to [3].
[5] The detergent for dishes according to any one of [1] to [4], wherein the content of the component (A) is 4 to 25% by mass with respect to the total mass of the detergent for dishes. .
[6] The detergent for dishes according to any one of [1] to [5], wherein the content of the component (B) is 2 to 20% by mass with respect to the total mass of the detergent for dishes. .
[7] For tableware according to any one of [1] to [6], wherein the content of the component (C) is 0.1 to 15% by mass with respect to the total mass of the detergent for tableware. Washing soap.
[8] The detergent for dishes according to any one of [1] to [7], wherein the content of the component (D) is 1 to 15% by mass with respect to the total mass of the detergent for dishes. .
[9] The dishwashing detergent according to any one of [1] to [8], wherein the mass ratio represented by (A) component / (B) component is 0.5-4.
[10] The total content of the component (A), the component (B), the component (C), and the component (D) is 10% by mass or more and less than 60% by mass with respect to the total mass of the dishwashing detergent. The cleaning agent for tableware according to any one of [1] to [9].
[11] The dishwashing detergent according to any one of [1] to [10], which is substantially free of butyl carbitol.
[12] The dishwashing detergent according to [2], wherein the component (D) is a gerbet alcohol type nonionic surfactant.

  ADVANTAGE OF THE INVENTION According to this invention, the cleaning agent for tableware which is excellent in foam persistence can be provided.

Hereinafter, the present invention will be described in detail.
The detergent for tableware of the present invention contains the following (A) ingredient, (B) ingredient, (C) ingredient, and (D) ingredient.

<(A) component>
The component (A) is an anionic surfactant.
By including the component (A) in the dishwashing detergent, it is possible to demonstrate the detergency and foaming ability against oil stains necessary as the basic performance of the dishwashing detergent by interaction with the components (B) and (D). .

As the component (A), for example, α-olefin sulfonate, linear or branched alkyl sulfate ester salt, alkyl ether sulfate ester salt or alkenyl ether sulfate ester salt, alkane sulfonate having an alkyl group, α-sulfo Fatty acid ester salts, sulfosuccinic acid alkyl ester salts, linear alkylbenzene sulfonates and the like can be mentioned. Examples of these salts include alkali metal salts such as sodium and potassium; alkanolamine salts such as monoethanolamine and diethanolamine.
(A) A component may be used individually by 1 type and may be used in combination of 2 or more type as appropriate.

As the component (A), an anionic surfactant represented by the following general formula (1), an alkane sulfonate, and a linear alkylbenzene sulfonate are preferable.
R ¹ —O— (EO) _n —SO ₃ ^— 1 / X · M ⁺ (1)
(In General Formula (1), R ¹ is a linear alkyl group having 8 to 18 carbon atoms, and the carbon atom bonded to the oxygen atom is the first carbon atom. EO is an oxyethylene group, n represents the average number of repetitions of EO, and 0 <n ≦ 4, M ⁺ is a cation other than a hydrogen ion, and X is the valence of M ⁺ .)

In the general formula (1), R ¹ has 8 to 18 carbon atoms, preferably 10 to 14 and more preferably 12 to 14. R ¹ is preferably an alkyl group derived from a fat and oil raw material from the viewpoint of detergency and environment. Suitable fats and oils include palm kernel oil, coconut oil and the like.

In the general formula (1), M ⁺ is a cation other than a hydrogen ion, and the valence is X. Examples of M ⁺ include those capable of forming a water-soluble salt such as alkali metal, alkaline earth metal, ammonium or alkanolamine.
Examples of the alkali metal include sodium and potassium.
Examples of the alkaline earth metal include calcium and magnesium.
Examples of the alkanolamine include monoethanolamine, diethanolamine, and triethanolamine.

Examples of the alkane sulfonate include alkane sulfonates having 10 to 20 carbon atoms, alkane sulfonates having 14 to 17 carbon atoms are preferable, and secondary alkane sulfonates are particularly preferable.
As the linear alkylbenzene sulfonate, a linear alkylbenzene sulfonate having 8 to 16 carbon atoms in the linear alkyl group is preferable, and a linear alkylbenzene sulfonate having 10 to 14 carbon atoms in the linear alkyl group is particularly preferable. preferable.

Specific examples of the component (A) include polyoxyethylene (1) linear alkyl (C12) sulfate sodium salt, polyoxyethylene (2) linear alkyl (C12) sulfate sodium salt, polyoxyethylene (4) Linear alkyl (C12) sulfate sodium salt, polyoxyethylene (1) linear alkyl (C12 / 14 = 75/25; derived from natural fats and oils) sulfate sodium salt, polyoxyethylene (2) linear alkyl (C12 / 14 = 75/25; derived from natural fats and oils) sulfate ester sodium salt, polyoxyethylene (4) linear alkyl (C12 / 14 = 75/25; derived from natural fats and oils) sulfate ester sodium salt, alkanesulfonic acid sodium salt, straight chain Alkyl (C12) benzenesulfonate, linear alkyl (C14) benzenesulfur Phosphate salts, and the like.
Among these, since the effects of the present invention are particularly easily obtained, polyoxyethylene (1) linear alkyl (C12 / 14 = 75/25; derived from natural fats and oils) sulfate sodium salt, polyoxyethylene (2) straight Chain alkyl (C12 / 14 = 75/25; derived from natural fats and oils) sulfate sodium salt, polyoxyethylene (4) linear alkyl (C12 / 14 = 75/25; derived from natural fats and oils) sulfate ester sodium salt, straight chain alkyl (C12) Benzene sulfonate is preferred.

Here, for example, “polyoxyethylene (1)” means that the average number of repeating oxyethylene groups is 1 (the average added mole number of ethylene oxide is 1).
“C12 / 14 = 75/25; derived from natural fats and oils” means a mixture of a compound having a linear alkyl group having 12 carbon atoms and a compound having a linear alkyl group having 14 carbon atoms (mixing ratio: by mass ratio). 75/25) and a linear alkyl group derived from natural fats and oils.

  The content of the component (A) is preferably 4 to 25% by mass and more preferably 8 to 15% by mass with respect to the total mass of the detergent for tableware. If content of (A) component is more than a lower limit, the detergency with respect to oil stains will increase. On the other hand, if content of (A) component is below an upper limit, the uniformity of the cleaning agent for tableware can be maintained favorable, and the cleaning power with respect to oil stains can be maintained.

<(B) component>
The component (B) is at least one selected from the group consisting of amphoteric surfactants and semipolar surfactants.
By including the component (B) in the dishwashing detergent, it is possible to demonstrate the detergency and foaming ability against oil stains necessary as the basic performance of the dishwashing detergent by interaction with the components (A) and (D). .
The “semipolar surfactant” refers to a surfactant that becomes cationic or nonionic depending on the pH of the solution in which the semipolar surfactant is dissolved or the dispersion system in which it is dispersed.

Examples of amphoteric surfactants include carboxylate type (also referred to as betaine type), sulfate ester type, sulfonate salt type, and phosphate ester salt type, and any of these can be used. Among these, carboxylate type is preferable.
Specific examples of the carboxylate type amphoteric surfactant include lauryl dimethylaminoacetic acid betaine, coconut alkyldimethylaminoacetic acid betaine, coconut oil fatty acid amidopropyl betaine, lauric acid amidopropyldimethylaminoacetic acid betaine, coconut alkylamidopropyldimethylamino Examples include betaine acetate, coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine (cocamidopropyl betaine), and the like.
One amphoteric surfactant may be used alone, or two or more amphoteric surfactants may be used in appropriate combination.

Examples of the semipolar surfactant include an amine oxide type surfactant and an amine alkylene oxide type surfactant. Among these, amine oxide type surfactants are preferable.
Examples of the amine oxide type surfactant include alkylamine oxide and alkanoylamide alkylamine oxide. Among these, a compound represented by the following general formula (2) is preferable.

In General Formula (2), R ² is a linear or branched alkyl group having 8 to 18 carbon atoms, or a linear or branched alkenyl group having 8 to 18 carbon atoms, and R ³ and R ⁴ are respectively Independently, it is an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms, and R ⁵ is an alkylene group having 1 to 4 carbon atoms. A is —CONH—, —NHCO—, —COO—, —OCO— or —O—, and p is a number of 0 or 1.

In general formula (2), R ² has 8 to 18 carbon atoms, preferably 10 to 14 carbon atoms. R ² is preferably a linear or branched alkyl group having 8 to 18 carbon atoms.
In the general formula ^(2), the R 3, ^{R 4,} preferably an alkyl group having 1 to 3 carbon atoms, respectively, and more preferably a methyl group, more preferably ^{R 3} and ^{R 4} are a methyl group.
In general formula (2), p is a number of 0 or 1, and 0 is preferable.

Specific examples of the compound represented by the general formula (2) include lauryldimethylamine oxide (n-dodecyldimethylamine oxide), coconut alkyldimethylamine oxide, lauryl diethylamine oxide, lauric acid amidopropyldimethylamine oxide, and the like. . Among these, lauryldimethylamine oxide is preferable because the effects of the present invention are particularly easily obtained.
A semipolar surfactant may be used individually by 1 type, and may be used in combination of 2 or more types as appropriate.

  As the component (B), only an amphoteric surfactant may be used, only a semipolar surfactant may be used, or an amphoteric surfactant and a semipolar surfactant may be used in combination.

  (B) 2-20 mass% is preferable with respect to the total mass of the detergent for tableware, and, as for content of a component, 6-12 mass% is more preferable. If content of (B) component is more than a lower limit, the detergency with respect to oil stains will increase. On the other hand, if content of (B) component is below an upper limit, the uniformity of the cleaning agent for tableware can be maintained favorable, and the cleaning power with respect to oil stains can be maintained.

<(C) component>
The component (C) is 3-methoxy-3-methyl-1-butanol.
When the detergent for tableware contains (C) component, favorable foam persistence can be exhibited by interaction with (A) component, (B) component, and (D) component.

  The content of the component (C) is preferably 0.1 to 15% by mass, more preferably 1 to 9% by mass, further preferably 2 to 6% by mass, and 3 to 5% with respect to the total mass of the detergent for tableware. Mass% is particularly preferred. If content of (C) component is in the said range, foam sustainability will improve more. In particular, if the content of the component (C) is at least the lower limit value, the stability of the dishwashing detergent is also increased.

<(D) component>
Component (D) is a nonionic surfactant.
By including the component (D) in the dishwashing detergent, it is possible to exhibit good foam durability due to the interaction with the components (A), (B), and (C). Demonstrate the detergency and foaming ability necessary for oil stains as basic performance.

Examples of the component (D) include polyoxyalkylene addition type nonionic surfactants represented by the following general formula (3), nonionic surfactants represented by the following general formula (4), alkylglycosides, sorbitan fatty acid esters, and the like. Is mentioned.
R ⁶ —O— (R ⁷ O) _q —H (3)
(In General Formula (3), R ⁶ is a linear or branched hydrocarbon group having 10 to 18 carbon atoms, R ⁷ is a hydrocarbon group having 1 to 3 carbon atoms, and q is (R ⁷ O ) Represents the average number of repetitions, and 1 ≦ q ≦ 20.)
R ⁸ —C (═O) —NH— (R ⁹ O) _r —H (4)
(In the general formula (4), R ⁸ is a linear or branched hydrocarbon group having 5 to ¹⁹ carbon atoms, R ⁹ is a hydrocarbon group having 2 to 4 carbon atoms, and r is (R ⁹ O ) Represents the average number of repetitions, and 1 ≦ r ≦ 20.)

In the general formula (3), the number of carbon atoms of ^{R 6} is 10-18, preferably 10 to 16, 10 to 14 is more preferable. The hydrocarbon group for R ⁶ is preferably an alkyl group or an alkenyl group.
In general formula (3), the hydrocarbon group for R ⁷ is preferably an alkylene group, more preferably an ethylene group or a propylene group. As (R ⁷ O), an oxyethylene group and an oxypropylene group may be mixed. When oxyethylene groups and oxypropylene groups are mixed, they may be mixed randomly or in blocks.
In general formula (3), q is 1-20, 5-20 are preferable and 5-15 are more preferable.

In General Formula (4), R ⁸ has 5 to 19 carbon atoms, and preferably 9 to 13 carbon atoms. As the hydrocarbon group for R ⁸ , an alkyl group or an alkenyl group is preferable.
In general formula (4), the hydrocarbon group for R ⁹ is preferably an alkylene group, more preferably an ethylene group or a propylene group, and particularly preferably an ethylene group. Further, as (R ⁹ O), an oxyethylene group and an oxypropylene group may be mixed. When oxyethylene groups and oxypropylene groups are mixed, they may be mixed randomly or in blocks.
In general formula (4), r is 1-20, and 1-4 are preferable.

As the component (D), a compound in which R ⁶ in the general formula (3) is a branched hydrocarbon group and a compound in which R ⁸ in the general formula (4) is a linear hydrocarbon group are preferable. Formula (3) in the Among R ⁶ is a hydrocarbon group which compound of branched, general formula (3) a nonionic surfactant which R ⁶ is a hydrocarbon group derived from a primary alcohol branched in ( Branched alkyl alkoxylates) are particularly preferred.

As the component (D), among the branched alkyl alkoxylates, gerbet alcohol type nonionic surfactants are preferable.
Examples of the gerbet alcohol type nonionic surfactant include compounds represented by the following general formula (5).
(R ¹⁰ ) (R ¹¹ ) CH—CH ₂ —O— (R ⁷ O) _q —H (5)
(In General Formula (5), R ⁷ is a hydrocarbon group having 1 to 3 carbon atoms, R ¹⁰ and R ¹¹ each independently represent a chain hydrocarbon group, and the sum of R ¹⁰ and R ¹¹ the number of carbon atoms is 8 to 16, q represents an average repeating number of the ^(R 7 O), it is 1 ≦ q ≦ 20.)

In general formula (5), the total carbon number of R ¹⁰ and R ¹¹ is 8 to 16, preferably 8 to 14, and more preferably 8 to 12. R ¹⁰ and R ¹¹ are preferably each independently a linear or branched alkyl group, or a linear or branched alkenyl group.
^{R 7} and q in the general formula (5) is the same as ^{R 7} and q in the general formula (3).

Examples of the compound represented by the general formula (5) include 2-propylheptyl alcohol ethoxylate and 2-ethylhexyl alcohol ethoxylate. Among these, 2-propylheptyl alcohol ethoxylate is preferable. The average added mole number of ethylene oxide is preferably 6 to 14, more preferably 8 to 11, and most preferably 10.
Specific examples of 2-propylheptyl alcohol ethoxylate include trade names “Lutensol XP-100” and “Lutensol XP-80” manufactured by BASF.
Specific examples of 2-ethylhexyl alcohol ethoxylate include trade name “New Coal 1008” manufactured by Nippon Emulsifier Co., Ltd.

  (D) As for content of a component, 1-15 mass% is preferable with respect to the total mass of the detergent for tableware, 2-12 mass% is more preferable, and 4-8 mass% is further more preferable. If content of (D) component is more than a lower limit, bubble sustainability will improve more. On the other hand, if content of (D) component is below an upper limit, the detergency with respect to oil stains and foaming property will improve.

<Mass ratio>
The mass ratio (hereinafter also referred to as “C / D ratio”) represented by component (C) / component (D) is 0.1 to 9, preferably 0.2 to 1.4, 0.3 ~ 1 is more preferred. When the C / D ratio is within the above range, the foam persistence is improved.

  The mass ratio represented by component (A) / component (B) (hereinafter also referred to as “A / B ratio”) is preferably 0.5 to 4, and more preferably 0.5 to 1.5. When the A / B ratio is within the above range, the foam persistence is further improved. In addition, it has excellent detergency and foaming ability against oil stains.

  Mass ratio represented by ((C) component + (D) component) / ((A) component + (B) component + (C) component + (D) component) (hereinafter, “(C + D) / (A + B + C + D)”) The ratio is also preferably 0.1 to 0.6, and more preferably 0.25 to 0.45. If the (C + D) / (A + B + C + D) ratio is within the above range, the foam durability is further improved.

  The total content of the component (C) and the component (D) is preferably 5 to 20% by mass, more preferably 8 to 15% by mass, and 10 to 15% by mass with respect to the total mass of the tableware detergent. Further preferred. If the sum total of content of (C) component and (D) component is in the said range, foam sustainability will improve more.

  The total content of the component (A), the component (B), the component (C), and the component (D) is preferably 10% by mass or more, more preferably 20% by mass or more, based on the total mass of the dishwashing detergent. Preferably, 30 mass% or more is more preferable. Further, the total content of the component (A), the component (B), the component (C) and the component (D) is preferably less than 60% by mass. If the sum total of content of (A) component, (B) component, (C) component, and (D) component is in the said range, foam sustainability will improve more. In addition, it has excellent detergency and foaming ability against oil stains.

<Water>
The dishwashing detergent of the present invention preferably contains water as a solvent from the viewpoint of ease of handling during production, solubility in water during use, and the like.

<Optional component>
If the detergent for tableware is in the range which does not impair the effect of this invention, (A) component, (B) component, (C) component, and components other than (D) component (optional component) as needed You may contain.
Examples of optional components include components used in dishwashing, kitchen, and hard surface cleaning compositions, such as cationic surfactants, preservatives, hydrotropes, and water-soluble solvents. It is done.

Examples of cationic surfactants include didecyldimethylammonium chloride, didecyldimethylammonium methosulfate, distearyldimethylammonium chloride, dioctyldimethylammonium chloride, distearyl dihydroxyethylammonium chloride, di-tallow alkyldimethylammonium chloride, di (stearoyl). Oxyethyl) dimethylammonium chloride, di (oleoyloxyethyl) dimethylammonium chloride, di (palmitoyloxyethyl) dimethylammonium methosulfate, di (stearoyloxyisopropyl) dimethylammonium chloride, di (oleoyloxyisopropyl) dimethylammonium chloride, Di (oleoyloxybutyl) dimethyl Ammonium chloride, di (stearoyl oxy ethyl) methyl-hydroxyethyl ammonium methosulfate, tri (stearoyl oxy ethyl) and the like methyl methosulfate. The “beef tallow alkyl” group has 14 to 18 carbon atoms.
A cationic surfactant may be used individually by 1 type, and may be used in combination of 2 or more type as appropriate.

(Preservative)
When the dishwashing detergent contains a preservative, even if microorganisms or the like are mixed in the dishwashing detergent, the growth of bacteria is suppressed.
Examples of the preservative include isothiazoline compounds, and specifically include benzisothiazolinone (1,2-benzisothiazolin-3-one), methylisothiazolinone (2-methyl-4-isothiazoline-3). -One), butylbenzisothiazolinone, chloromethylisothiazolinone, octylisothiazolinone, dichlorooctylisothiazolinone and the like. Among these, 1,2-benzisothiazolin-3-one and 2-methyl-4-isothiazolin-3-one are preferable.
A preservative may be used individually by 1 type, and may be used in combination of 2 or more types as appropriate.

(Hydrotrope agent)
When the cleaning agent for tableware contains a hydrotrope, the storage stability (especially low-temperature stability) of the cleaning agent for tableware mainly improves, and it becomes easy to ensure a more stable transparent appearance.
Examples of the hydrotrope include monohydric alcohol having 2 to 4 carbon atoms, glyceryl ether having 4 to 10 carbon atoms, toluenesulfonic acid, toluenesulfonic acid salt, cumenesulfonic acid, cumenesulfonic acid salt, benzoic acid, and benzoic acid salt. Is mentioned.
A hydrotrope agent may be used individually by 1 type, and may be used in combination of 2 or more types as appropriate.

In the hydrotrope, toluenesulfonic acid, toluenesulfonic acid salt, cumenesulfonic acid, and cumenesulfonic acid salt may be any of three isomers of o-form, m-form, and p-form, respectively.
Examples of the monohydric alcohol having 2 to 4 carbon atoms include ethanol, n-propanol, isopropanol, n-butanol, secondary butanol, and tertiary butanol.
Examples of the glyceryl ether having 4 to 10 carbon atoms include glycerin and hexyl glyceryl ether.

As a hydrotrope agent, ethanol and paratoluenesulfonate are used from the viewpoint of the dissolution effect of (A) component, (B) component, (C) component and (D) component in the detergent for tableware, and a feeling of use. preferable.
The content of the hydrotrope agent is preferably 1 to 30% by mass and more preferably 1 to 20% by mass with respect to the total mass of the detergent for tableware.

(Water-soluble solvent)
When the dishwashing detergent contains a water-soluble solvent, the viscosity reduction and transparency of the dishwashing detergent are mainly improved.
Examples of the water-soluble solvent include alcohol solvents and glycol ether solvents (excluding the component (C)).
A water-soluble solvent may be used individually by 1 type, and may be used in combination of 2 or more types as appropriate.

Examples of alcohol solvents include ethanol, isopropanol, n-butanol, ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, 1,3-butylene glycol, 1, Examples include 4-butanediol, 1,5-pentanediol, hexylene glycol, and glycerin.
Examples of the glycol ether solvent include ethylene glycol monobutyl ether, ethylene glycol monohexyl ether, ethylene glycol monophenyl ether, propylene glycol monophenyl ether, diethylene glycol monomethyl ether, diethylene glycol monobutyl ether (butyl carbitol) and the like.

However, from the viewpoint of further enhancing the foam persistence, it is preferable that the dishwashing agent does not substantially contain butyl carbitol.
Here, “substantially does not contain” means less than 1% by mass with respect to the total mass of the detergent for tableware.

  In addition to the above, the dishwashing detergent of the present invention includes, as optional components, pH adjusting agents such as sodium hydroxide and sulfuric acid; inorganic builders such as magnesium sulfate, zinc sulfate and zinc oxide; sodium citrate and sodium lactate Chelating agents; fragrances, pigments and the like can also be blended.

  In addition, the sum total of content of all the components contained in the detergent for tableware shall be 100 mass%.

<Manufacturing method>
The dishwashing agent of the present invention dissolves, for example, the above-described component (A), component (B), component (C) and component (D), and optional components as necessary in a solvent such as water. , By adjusting to a predetermined pH using a pH adjusting agent.

<PH>
As for pH at 25 degreeC of the cleaning agent for tableware of this invention, 6-8 are preferable.
In this invention, pH (25 degreeC) of the cleaning agent for tableware shows the value measured by the method based on JISZ8802: 1984 "pH measuring method".
What is necessary is just to adjust pH of the detergent for tableware using a pH adjuster.

<Effect>
In the tableware cleaning agent of the present invention described above, at least one selected from the group consisting of an anionic surfactant as the component (A) and an amphoteric surfactant and a semipolar surfactant as the component (B). In combination with (3), 3-methoxy-3-methyl-1-butanol as component (C) and nonionic surfactant as component (D) are used in combination at a specific ratio, so that the foam persistence is excellent.

  EXAMPLES Hereinafter, although an Example is shown and this invention is demonstrated in detail, this invention is not limited by the following description. In addition, the compounding quantity of the component used in each example is a pure conversion value unless there is particular notice.

"Raw materials"
As the component (A), the following compounds were used.
A-1: Sodium polyoxyethylene alkyl ether sulfate (AES), in the above general formula (1), R ¹ = C12-14 linear alkyl group, n = 1, M = sodium, X = 1 . Synthesized by the following synthesis method.
A-2: Sodium polyoxyethylene alkyl ether sulfate ester (AES; manufactured by BASF, trade name “Texapon N70T”). In said general formula (1), R < ¹ > = C12-C14 linear alkyl group (C12 / C14 = 75% / 25%, mass ratio), n = 2, M = sodium, X = 1.
A-3: Sodium polyoxyethylene alkyl ether sulfate (AES), in the above general formula (1), R ¹ = C12-14 linear alkyl group, n = 4, M = sodium, X = 1 . Synthesized by the following synthesis method.
A-4: Secondary alkane sulfonate having 14 to 17 carbon atoms (SAS; Clariant Japan Co., Ltd., trade name “HOSTAPUR SAS 30A”).
A-5: Sodium alkylbenzene sulfonate (LAS) having 10 to 14 carbon atoms, a product name “Taika Power L121” manufactured by Teika Co., Ltd., neutralized with sodium hydroxide.
A-6: Sodium α-olefin sulfonate (AOS; manufactured by Lion Specialty Chemicals, trade name “Lipolane LB440”).

(Synthesis method of A-1)
In a 4 L autoclave, 400 g of a trade name “CO1270 alcohol (C12 / C14 = 75% / 25%, mass ratio)” manufactured by P & G Co. as raw material alcohol and 0.8 g of potassium hydroxide as a reaction catalyst were charged. After replacing the inside of the autoclave with nitrogen, the temperature was raised with stirring. Subsequently, 91 g of ethylene oxide was introduced and reacted while maintaining the temperature at 180 ° C. and the pressure at 0.3 MPa or less. The average addition mole number of ethylene oxide of the obtained polyoxyalkylene ether was 1.
Next, 237 g of the obtained polyoxyalkylene ether ethylene oxide was placed in a 500 mL flask equipped with a stirrer and purged with nitrogen, and then 96 g of liquid sulfuric anhydride (sulfane) was slowly added dropwise while maintaining the reaction temperature at 40 ° C. After completion of the dropwise addition, stirring was continued for 1 hour (sulfation reaction) to obtain polyoxyethylene alkyl ether sulfuric acid.
Subsequently, A-1 was obtained by neutralizing the obtained polyoxyethylene alkyl ether sulfuric acid with sodium hydroxide aqueous solution.

(Synthesis method of A-3)
A-3 was obtained in the same manner as A-1, except that the amount of ethylene oxide was changed to 364 g.

As the component (B), the following compounds were used.
B-1: n-dodecyldimethylamine oxide (AX; manufactured by Lion Specialty Chemicals, trade name “KADENAX DM12D-W”). In the general formula (2), R ² = a linear alkyl group having 12 carbon atoms, R ³ = methyl group, R ⁴ = methyl group, p = 0.
-B-2: Amidopropyl dimethylamine oxide (APAX; manufactured by Clariant Japan, trade name “GENAMINOX AP”). In the general formula (2), R ² = linear alkyl group having 11 carbon atoms, R ³ = methyl group, R ⁴ = methyl group, R ⁵ = propylene group, A = -CONH-, p = 1.
B-3: lauryldimethylaminoacetic acid betaine (Daiichi Kogyo Seiyaku Co., Ltd., trade name “Amigen S”).
B-1 and B-2 are semipolar surfactants, and B-3 is an amphoteric surfactant.

As the component (C) or its substitute (C ′), the following compounds were used.
C-1: 3-methoxy-3-methyl-1-butanol (Kuraray Co., Ltd., trade name “Solfit MMB”).
C′-1: Butyl carbitol (Nippon Emulsifier Co., Ltd., trade name “butyl diglycol”)
C′-2: Propylene glycol (manufactured by BASF).
C′-3: Glycerin (manufactured by Kanto Chemical Co., Inc., trade name “glycerin”).

As the component (D), the following compounds were used.
D-1: 2-propylheptyl alcohol ethoxylate (manufactured by BASF, trade name “Lutensol XP-100”). In the general formula (3), R ⁶ = 2-propylheptyl group, R ⁷ = ethylene group, q = 10.
D-2: 2-propylheptyl alcohol ethoxylate (manufactured by BASF, trade name “Lutensol XP-80”). In the above general formula (3), R ⁶ = 2-propylheptyl group, R ⁷ = ethylene group, q = 8.
D-3: 2-ethylhexyl alcohol ethoxylate (manufactured by Nippon Emulsifier Co., Ltd., trade name “New Coal 1008”). In the general formula (3), R ⁶ = 2-ethylhexyl group, R ⁷ = ethylene group, q = 8.
D-4: Polyoxyethylene lauryl ether (manufactured by Lion Specialty Chemicals, “LMAO-90”). In said general formula (3), R < ⁶ > = C12-C14 linear alkyl group, R < ⁷ > = ethylene group, q = 15.
D-5: Polyoxyethylene lauryl ether (manufactured by Nippon Emulsion Co., Ltd., “EMALEX 710 Laureth-10”). In the general formula (3), R ⁶ = a linear alkyl group having 12 carbon atoms, R ⁷ = ethylene group, q = 10.
D-6: Polyoxyethylene lauric acid monoethanolamide (manufactured by Kawaken Fine Chemical Co., Ltd., trade name “Amidette 2L-Y”). In the general formula (4), R ⁸ = a linear alkyl group having 11 carbon atoms, R ⁹ = ethylene group, r = 3.
D-1, D-2 and D-3 are garvet alcohol type nonionic surfactants, and D-4 and D-5 are linear type nonionic surfactants.

The following compounds were used as optional components.
<Hydrotrope agent>
PTS: p-toluenesulfonic acid, deer grade 1 (manufactured by Kanto Chemical Co., Inc.)
Benzoic acid Na: sodium benzoate (manufactured by Toagosei Co., Ltd., trade name “sodium benzoate”).
<Inorganic builder>
-Zinc oxide: (Mitsui Metal Mining Co., Ltd.).
-Mg sulfate: Magnesium sulfate heptahydrate (manufactured by Junsei Co., Ltd.).
-Zinc sulfate: Zinc sulfate heptahydrate (manufactured by Junsei Co., Ltd.).
<Preservative>
BIT: 1,2-benzisothiazolin-3-one (manufactured by Arch Chemicals, trade name “PROXEL XL2”).
MIT: 2-methyl-4-isothiazolin-3-one (Rohm and Haas, trade name “Neolone M-10”).
<Water-soluble solvent>
PEG 1000: Polyethylene glycol 1000 (manufactured by Lion Corporation, trade name “PEG # 1000”, average molecular weight 1000).
<Chelating agent>
-Lactic acid Na: Sodium lactate (Kanto Chemical Co., Ltd., brand name "sodium lactate").
<PH adjuster>
-PH adjuster: Sodium hydroxide (made by Kanto Chemical Co., Inc.).
<Fragrance>
Fragrance: Fragrance composition A described in Tables 11 to 18 of JP-A No. 2002-146399.

"Examples 1-30, Comparative Examples 1-10"
<Preparation of detergent for tableware>
1000 g of tableware detergents having the composition shown in Tables 1 to 6 were prepared by the following procedure.
(A) component, (C) component, and (D) component were put into 1 L beaker, and it fully stirred with the magnetic stirrer (The product name "F-606N" by Fine company). Then, (B) component and arbitrary components (except a pH adjuster) were added and mixed. After mixing, after adding an appropriate amount of a pH adjusting agent as necessary so that the pH at 25 ° C. is 6-8, water (distilled water) is added so that the total amount becomes 100% by mass, Stirring to obtain a dishwashing detergent.
The pH of the detergent for tableware (25 ° C.) was adjusted to 25 ° C. and a glass electrode type pH meter (trade name “HM-30G” manufactured by Toa DKK Corporation) was used. It was directly immersed in a dishwashing detergent, and the pH shown after 1 minute was measured. The measuring method was performed according to JIS Z 8802: 1984 “pH measuring method”.
About the obtained dishwashing agent of each example, foam persistence was evaluated as follows. The results are shown in Tables 1-6.

<Evaluation of foam persistence>
A dish (21 cm in diameter) from which 1 g of olive oil and 5 g of water were collected as model oil dirt was used as a model oil dirt dish, and 30 model oil dirt dishes were prepared. To a dishwashing sponge (Sumitomo 3M Co., Ltd., trade name “Scotch Bright”) measuring 11.5 cm long × 7.5 cm wide × 3 cm high, 38 g of tap water at 25 ° C. and 2 g of dishwashing detergent for each example Then, the dishwashing sponge after squeezing by hand three times was brought into contact with the model oil dirt dish, and the model oil dirt and the dishwashing sponge were blended. After that, the dishwashing sponge was pressed against the model oil-stained dish and moved to draw a circle 10 times to rub. Then, without washing the dishwashing sponge with fresh tap water and dishwashing agent, the model oil stain dish is continuously washed, and no bubbles remain on the model oil stain dish after scrubbing ( Washed until it could not be confirmed. Next, the foam present in each model oil-stained dish after scrubbing (after washing) is transferred to a 10 mL graduated cylinder, and the amount of foam (mL) is measured for each dish. Based on the evaluation.
(Double-circle): The number of plates which could confirm the foam volume of 5 mL or more after washing was 20 or more.
○: The number of dishes in which a foam amount of 5 mL or more was confirmed after washing was 18 to 19.
(Triangle | delta): The number of plates which could confirm the foam volume of 5 mL or more after washing | cleaning was 16-17 sheets.
X: The number of plates in which the amount of bubbles of 5 mL or more was confirmed after washing was 15 or less.

In Tables 1-6, "balance" is the compounding quantity (mass%) of water (distilled water) required to make 100 mass% with the whole dishwashing detergent.
Moreover, (C) + (D) is the total content of the component (C) and the component (D) in the dishwashing detergent. (C ′) + (D) is the total content of the component (C ′) and the component (D) in the dishwashing detergent. (A) + (B) + (C) + (D) is the total content of the component (A), the component (B), the component (C) and the component (D) in the dishwashing detergent. (A) + (B) + (C ′) + (D) is the total content of the component (A), component (B), component (C ′) and component (D) in the dishwashing detergent. is there. "C / D ratio" is a mass ratio represented by (C) component / (D) component. “C ′ / D ratio” is a mass ratio represented by (C ′) component / (D) component. “A / B ratio” is a mass ratio represented by (A) component / (B) component. “(C + D) / (A + B + C + D) ratio” is a mass represented by ((C) component + (D) component) / ((A) component + (B) component + (C) component + (D) component). Is the ratio. “(C ′ + D) / (A + B + C ′ + D) ratio” is ((C ′) component + (D) component) / ((A) component + (B) component + (C ′) component + (D) component) ).

As is clear from Tables 1 to 4, the dishwashing detergent of each example was excellent in foam persistence.
On the other hand, as is clear from Tables 5 and 6, the dishwashing detergents of Comparative Examples 1 to 5 that do not contain any of the components (A), (B), (C), and (D) are foam It was inferior in sustainability.
The detergent for tableware of the comparative example 6 whose C / D ratio is less than 0.1, and the comparative examples 6 and 7 whose C / D ratio is more than 9 were inferior in foam persistence.
The dishwashing agents of Comparative Examples 8 to 10 using the component (C ′) instead of the component (C) were inferior in foam persistence.

Claims (4)

The following (A) component, (B) component, (C) component and (D) component are contained, and the mass ratio represented by (C) component / (D) component is 0.1-9. Washing soap.
(A) component: anionic surfactant.
Component (B): At least one selected from the group consisting of amphoteric surfactants and semipolar surfactants.
Component (C): 3-methoxy-3-methyl-1-butanol.
(D) Component: Nonionic surfactant.   The dishwashing | cleaning agent of Claim 1 whose said (D) component is a branched alkyl alkoxylate.   The total amount of content of the said (C) component and the said (D) component is 5-20 mass% with respect to the total mass of the said tableware cleaning agent, The cleaning agent for tableware of Claim 1 or 2.   The mass ratio represented by ((C) component + (D) component) / ((A) component + (B) component + (C) component + (D) component) is 0.1 to 0.6. The cleaning agent for tableware as described in any one of Claims 1-3.