CN108342258B

CN108342258B - Liquid detergent composition

Info

Publication number: CN108342258B
Application number: CN201810007421.5A
Authority: CN
Inventors: 矢野诚二; 季侃; 窪田裕一
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2017-01-25
Filing date: 2018-01-04
Publication date: 2022-04-01
Anticipated expiration: 2038-01-04
Also published as: WO2018139389A1; CN108342258A

Abstract

本发明提供一种液体清洁剂组合物，其含有以下(a)～(b)成分以及水：(a)不包括脂肪酸的碳原子数为12～18的阴离子表面活性剂；(b)氧化胺型表面活性剂，其中，(a)成分包含烷基或烯基的碳原子数为16以上且18以下的烷基或烯基硫酸酯盐，其含量相对于(a)成分的含量的质量比为0.03以上。根据本发明的液体清洁剂组合物，其对于烹饪油污的涂抹清洁力强，在手洗和机洗时起泡迅速，并且在漂洗时可以简单地进行漂洗。The present invention provides a liquid detergent composition comprising the following components (a) to (b) and water: (a) an anionic surfactant having 12 to 18 carbon atoms excluding fatty acids; (b) amine oxide type surfactant, wherein the (a) component contains an alkyl or alkenyl sulfate salt of an alkyl group or an alkenyl group with a carbon number of 16 or more and 18 or less, and the mass ratio of its content relative to the content of the (a) component is 0.03 or more. According to the liquid detergent composition of the present invention, it has strong smear cleaning power for cooking oil stains, lathers rapidly during hand washing and machine washing, and can be easily rinsed during rinsing.

Description

Liquid detergent composition

Technical Field

The present invention relates to a liquid detergent composition, particularly to a liquid detergent composition for textile products such as clothes.

Background

As a method of washing laundry, there are roughly 2 types of washing methods, i.e., hand washing and washing machine washing.

In asian areas, laundry is often washed by hand, and even in the case of washing by a washing machine, pre-washing by hand is often performed before washing by the washing machine.

This is because in asian areas, people often eat a large amount of oily food, and such cooking oil stains attached to clothes are difficult to effectively remove by means of a washing machine, and such cooking oil stains can be effectively removed only by rubbing with hands or by applying a clothes cleaning agent to the oil stains in advance for pretreatment and then washing in the washing machine.

In the field of detergents, the ability to clean stains, the abundance of foam during cleaning, and the ease of rinsing after cleaning are important issues. This is especially evident in hand washing against cooking oil stains.

In washing, since the cooking oil stain is very persistent, excellent cleaning ability is required for the cooking oil stain, and further, in hand washing, since sufficient foaming in scrubbing causes high cleaning ability to be thought of and affects the satisfaction of a detergent user, sufficient foaming ability is required. In addition, from the viewpoint of water saving and labor saving, it is strongly desired that the foam disappears rapidly during rinsing and the rinsing is completed with a small amount of water. The existing cleaning agent can not simultaneously take into account the three points of dirt, especially the cleaning capability of cooking oil stain, the richness of foam during cleaning and the easy rinsing property after cleaning in the washing process, so that a new technology which can take into account the three points is sought.

Patent document 1 discloses that a liquid detergent composition for kitchen use containing an alkyl (C10 to 18) amine oxide and a polyoxyethylene alkyl (C10 to 20) ether sulfate having an average addition mole number of 0.5 to 5 can provide excellent cleaning power, rinsing property, and storage stability at low temperature, but does not suggest any technique for using a hydrocarbyl sulfate or a hydrocarbyl sulfonate.

Patent document 2 discloses that a liquid detergent composition containing an alkyl or hydroxyalkyl (C10 to 18) amine oxide and a specific polyoxyalkylene alkyl ether sulfate can provide high cleaning ability and advantageous effects of storage stability at low temperatures, but does not suggest any technique for using a hydrocarbyl sulfate or a hydrocarbyl sulfonate.

Documents of the prior art

Patent document

Patent document 1: JP 2012 12436A

Patent document 2: US 8071521B 1

Disclosure of Invention

The present inventors have conducted a special study and as a result have found that a composition comprising: the present invention has been completed based on the finding that a liquid detergent composition which does not contain an anionic surfactant having 12 to 18 carbon atoms of a fatty acid [ (a) component ], a specific amine oxide surfactant [ (b) component ] and water as essential components and contains a specific sulfate salt anionic surfactant as component (a) and the mass ratio of the content of the specific sulfate salt anionic surfactant to the content of component (a) satisfies a specific range is excellent in the cleaning ability, foamability and rinsing ability against greasy dirt and exhibits excellent cleaning ability particularly against greasy cooking dirt.

The present invention provides a liquid detergent composition comprising the following components (a) to (b) and water:

(a) an anionic surfactant having 12 to 18 carbon atoms excluding fatty acids, wherein the mass ratio ((a-2)/(a)) of the content of an alkyl or alkenyl sulfate having 16 to 18 carbon atoms in an alkyl or alkenyl group as the component (a-2) to the content of the component (a) is 0.03 or more;

(b) an amine oxide surfactant represented by the following general formula (1),

R¹represents a linear or branched saturated or unsaturated hydrocarbon group having 6 to 16 carbon atoms, R²Represents an alkylene group having 1 to 3 carbon atoms, R³、R⁴Independently of each other, an alkyl group or a hydroxyalkyl group having 1 to 3 carbon atoms; or R³、R⁴Each independently represents an alkylene group or hydroxyalkylene group having 1 to 3 carbon atoms bonded to each other through a hetero atom, X represents a group selected from the group consisting of-COO-, -CONH-, and-O-, and m is a number of 0 or 1.

According to the present invention, it is possible to provide a liquid detergent composition which not only has high smear cleaning power on oily stains, particularly cooking oily stains, but also is rich in foam at the time of cleaning, and rapidly disappears at the time of rinsing, enabling rinsing to be performed quickly and easily. The effects of the present invention can be obtained even when cleaning and rinsing are performed with high-hardness washing water.

Detailed Description

The components contained in the liquid detergent composition of the present invention will be described in detail below.

< ingredient (a) >

(a) The component (a) is an anionic surfactant having 12-18 carbon atoms and excluding fatty acids, wherein the mass ratio ((a-2)/(a)) of the content of an alkyl or alkenyl sulfate salt having 16 or more carbon atoms and 18 or less in the alkyl or alkenyl as the component (a-2) to the content of the component (a) is 0.03 or more.

The component (a-2) preferably contains an alkyl or alkenyl sulfate salt having 16 carbon atoms and an alkyl or alkenyl group, from the viewpoints of improving foamability during washing, easy-to-rinse property in which foam disappears quickly during rinsing, and wiping and cleaning power against oily stains. More preferably an alkyl sulfate having an alkyl group with 16 carbon atoms.

The mass ratio ((a-2)/(a)) of the content of the component (a-2) to the content of the component (a) in the present invention is 0.03 or more, preferably 0.07 or more, more preferably 0.13 or more, further preferably 0.2 or more, and is 1 or less, preferably 0.43 or less, more preferably 0.33 or less from the viewpoint of excellent foamability, from the viewpoint of easy rinsability in which foam disappears rapidly at the time of rinsing, and smear detergency to oil stains. As described above, the mass ratio of the content of the component (a-2) to the content of the component (a) is preferably 0.03 to 1, more preferably 0.03 to 0.43, even more preferably 0.03 to 0.33, even more preferably 0.07 to 0.33, even more preferably 0.13 to 0.33, and even more preferably 0.2 to 0.33, from the viewpoints of excellent rinsability in which foam disappears rapidly during rinsing, excellent smear cleaning power against oil stains, and excellent foamability.

The component (a) may contain an anionic surfactant having 12 to 18 carbon atoms selected from the group consisting of components (a-2) described above, for example, 1 or 2 or more of alkyl or alkenyl sulfate ester salts [ hereinafter referred to as (a-1) ], α -olefin sulfonate [ hereinafter referred to as (a-3) ], paraffin sulfonate [ hereinafter referred to as (a-4) ], polyoxyethylene alkyl sulfate ester salts [ hereinafter referred to as (a-5) ], and alkylbenzene sulfonate [ hereinafter referred to as (a-6) ], from the viewpoint of improving the ease of rinsing in which foam rapidly disappears and the wiping power against oily stains.

From the same viewpoint as above, the component (a-1) is preferably an alkyl or alkenyl sulfate salt having 12 to 14 carbon atoms in the alkyl or alkenyl group; the component (a-3) is preferably an α -olefin sulfonate having an alkenyl group with 14 to 16 carbon atoms; the component (a-4) is preferably a paraffin sulfonate in which the alkyl group has 12 to 18 carbon atoms; the component (a-5) is preferably a polyoxyethylene alkyl sulfate salt in which the number of carbon atoms in the alkyl or alkenyl group is 12 to 18 inclusive and the average molar number of addition of ethylene oxide is 1 to 3 inclusive; the component (a-6) is preferably an alkylbenzene sulfonate having an alkyl group or an alkenyl group having 12 to 14 carbon atoms.

The counter ion of the anionic surfactant is 1 or 2 or more selected from alkali metal ions, alkaline earth metal ions, ammonium ions and alkylolammonium ions, and more preferably 1 or 2 or more selected from alkali metal ions, from the viewpoint of further improving foaming properties and cleaning power by spreading.

The alkali metal ion is preferably 1 or 2 selected from sodium ion and potassium ion, and more preferably sodium ion, from the viewpoint of further improving the foaming property and the smear cleaning power.

Specific examples of the component (a-1) include sodium lauryl sulfate and sodium tetradecyl sulfate. Specific examples of the component (a-2) include sodium hexadecyl sulfate, sodium octadecyl sulfate, sodium oleyl sulfate and the like. Specific examples of the component (a-3) include sodium alpha-olefin sulfonate having 14 to 16 carbon atoms. Specific examples of the component (a-4) include secondary sodium alkylsulfonates having 13 to 17 carbon atoms. Specific examples of the component (a-5) include sodium laureth sulfate and the like, polyoxyethylene (EO average molar number of addition: 3). Specific examples of the component (a-6) include sodium dodecylbenzenesulfonate and the like.

(a) The component (a) may be 1 or 2 or more selected from the components (a-2), or 1 or 2 or more selected from the components (a-2) may be used in appropriate combination with 1 or 2 or more selected from the components (a-1), and (a-3) to (a-6), and the mass ratio of the content of the component (a-2) to the content of the component (a) ((a-2)/(a)) in the component (a) is 0.03 or more.

From the viewpoint of improving the foamability at hand washing, the easy-to-rinse property in which the foam rapidly disappears at rinsing, and the smear cleaning power on oil stains, it is preferable to use 1 or 2 or more selected from the component (a-2) in combination with 1 or 2 or more selected from the component (a-1).

The content of the component (a) in the liquid detergent composition of the present invention is preferably 0.75% by mass or more, more preferably 1% by mass or more, even more preferably 2% by mass or more, even more preferably 3% by mass or more, even more preferably 5% by mass or more, and further preferably 25% by mass or less, and even more preferably 20% by mass or less, from the viewpoint of compatibility between foaming properties, easy-to-rinse properties in which foam rapidly disappears during rinsing, and wiping detergency. From these viewpoints, the content of the component (a) in the liquid detergent composition of the present invention is preferably 0.75 to 25% by mass, more preferably 1 to 20% by mass, even more preferably 2 to 20% by mass, and even more preferably 5 to 20% by mass.

< ingredient (b) >

(b) The component (A) is an amine oxide surfactant having a hydrocarbon group having 6 to 16 carbon atoms. The hydrocarbon group having 6 to 16 carbon atoms includes an alkyl group or an alkenyl group having 6 to 16 carbon atoms, and these may be linear or branched. The component (b) is preferably an amine oxide surfactant having a hydrocarbon group having 6 to 12 carbon atoms, more preferably an amine oxide surfactant having a hydrocarbon group having 8 to 12 carbon atoms, even more preferably an amine oxide surfactant having a hydrocarbon group having 8 to 10 carbon atoms, and most preferably an amine oxide surfactant having a hydrocarbon group having 8 carbon atoms, from the viewpoint of providing an easy-to-rinse property in which foam disappears rapidly during rinsing and further providing excellent smear cleaning power to oily stains.

The amine oxide surfactant of the present invention includes a compound represented by the following general formula (1).

In the general formula (1), R is R from the viewpoint of easy rinsing property for rapidly disappearing foam at the time of rinsing and further excellent smear cleaning power for greasy dirt¹The alkyl group is preferably a linear or branched alkyl group or alkenyl group, more preferably a linear alkyl group or alkenyl group, still more preferably a linear alkyl group, and yet more preferably a primary alkyl group.

In addition, R is an index for easy rinsing property in which foam disappears rapidly during rinsing and for more excellent smear cleaning power against oily stains¹The number of carbon atoms of (a) is 6 or more, preferably 8 or more, and from the same viewpoint, 16 or less, preferably 12 or less, more preferably 10 or less, further preferably 8 or less, and from the same viewpoint, 6 to 16, preferably 8 to 12, more preferably 8 to 10, and most preferably 8.

Preferable examples of the compound of the component (b) include R in the general formula (1)¹Is a linear alkyl group with 6-16 carbon atoms, R³、R⁴Are both methyl; or R³、R⁴Among these compounds, those which are bonded to each other through oxygen atoms and are all ethylene groups, and m is 0 are preferably selected from the group consisting of hexyldimethylamine oxide, octyldimethylamine oxide, decyldimethylamine oxide, dodecyldimethylamine oxide, tetradecyldimethylamine oxide, hexadecyldimethylamine oxide, N-octylmorpholine-N-oxide, N-decyldorpholine-N-oxide, N-dodecylmorpholine-N-oxide, N-dodecyldimethylamine oxide, and mixtures thereof, from the viewpoint of easy rinsability which allows foams to disappear rapidly during rinsing and further excellent cleaning power for application,And N-tetradecyl morpholine-N-oxide, more preferably 1 or 2 or more selected from octyl dimethylamine oxide, decyl dimethylamine oxide, dodecyl dimethylamine oxide and N-decyl morpholine-N-oxide, still more preferably 1 or 2 or more selected from octyl dimethylamine oxide, decyl dimethylamine oxide and N-decyl morpholine-N-oxide, and still more preferably octyl dimethylamine oxide.

(b) The component (A) may be used alone in 1 kind, or may be used in combination of 2 or more kinds. Among them, from the viewpoint of compatibility between easy-to-rinse property in which foam rapidly disappears during rinsing and smear detergency, it is more preferable to use an amine oxide surfactant having an alkyl group having 6 to 16 carbon atoms alone or a combination of 2 or more amine oxide surfactants having an alkyl group having 6 to 16 carbon atoms.

The content of the component (b) in the liquid detergent composition of the present invention is preferably 0.3% by mass or more, more preferably 0.5% by mass or more, further preferably 1% by mass or more, further preferably 1.5% by mass or more, further preferably 2% by mass or more, and preferably 6% by mass or less, more preferably 5% by mass or less, further preferably 3% by mass or less, from the viewpoint of easy rinsability that allows quick disappearance of foam at the time of rinsing and further excellent smear cleaning power. From these viewpoints, the content of the component (b) in the liquid detergent composition of the present invention is preferably 0.3 to 6% by mass, more preferably 0.3 to 5% by mass, even more preferably 0.5 to 3% by mass, even more preferably 1 to 3% by mass, even more preferably 1.5 to 3% by mass, and even more preferably 2 to 3% by mass.

The total content of the component (a) and the component (b) is preferably 2 mass% or more, more preferably 3 mass% or more, even more preferably 5 mass% or more, even more preferably 7 mass% or more, and preferably 30 mass% or less, even more preferably 25 mass% or less, from the viewpoint of the smear cleaning power and foaming property against the cooking oil stain. From these viewpoints, in the liquid detergent composition of the present invention, (a) + (b) is preferably 2 to 30% by mass, more preferably 2 to 25% by mass, even more preferably 3 to 25% by mass, even more preferably 5 to 25% by mass, and even more preferably 7 to 25% by mass.

< ingredient (c) >

In the liquid detergent composition of the present invention, (c) a nonionic surfactant may be further contained.

Examples of the nonionic surfactant as the component (c) include: 1 or 2 or more selected from polyoxyalkylene alkyl ether, polyoxyalkylene alkenyl ether, alkyl polyglucoside, alkyl glucoside, sucrose fatty acid ester, polyglycerin fatty acid ester, fatty acid monoethanolamide, fatty acid diethanolamide, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, and alkyl saccharide surfactant. Among them, from the viewpoint of cleaning power against stains such as cooking oil stains and product stability, 1 or 2 or more selected from polyoxyalkylene alkyl ethers, fatty acid monoethanolamides, and fatty acid diethanolamides are preferable, and 1 or 2 or more selected from polyoxyalkylene alkyl ethers and fatty acid monoethanolamides are more preferable. From the viewpoint of easy rinsing, polyoxyalkylene alkyl ether is more preferable.

The alkyl group of the polyoxyalkylene alkyl ether is preferably linear from the viewpoint of detergency against stains such as cooking oil stains and product stability.

The alkylene group of the polyoxyalkylene alkyl ether is preferably 1 or 2 selected from ethylene and propylene, and more preferably ethylene, from the viewpoint of detergency against stains such as cooking oil stains and product stability.

The polyoxyalkylene alkyl ether preferably has an alkyl group having 8 or more carbon atoms, more preferably 10 or more carbon atoms, and still more preferably 12 or more carbon atoms, from the viewpoint of detergency against stains such as cooking oil stains and product stability, and from the same viewpoint, preferably has 18 or less carbon atoms, more preferably 16 or less carbon atoms, and still more preferably 14 or less carbon atoms.

The number of moles of oxyalkylene groups added of the polyoxyalkylene alkyl ether is preferably 1 or more, more preferably 5 or more, and still more preferably 10 or more, from the viewpoint of detergency against stains such as cooking oil stains and product stability, and is preferably 30 or less, more preferably 25 or less, and still more preferably 21 or less from the same viewpoint.

From the viewpoint of detergency against stains such as cooking oil stains and product stability, the fatty acid monoethanolamide is preferably 1 or 2 or more selected from amides of fatty acids and monoethanols having a hydrocarbon group with a carbon number of 7 or more and 21 or less, more preferably 1 or 2 selected from coconut fatty acid monoethanolamides and palm kernel oil fatty acid monoethanolamides, and still more preferably coconut fatty acid monoethanolamides.

The content of the nonionic surfactant as the component (c) in the present invention is preferably 16% by mass or less, more preferably 10% by mass or less, even more preferably 6% by mass or less, and even more preferably 1% by mass or less, from the viewpoint of easy rinsability that allows quick disappearance of foam during rinsing and further excellent detergency for smearing on cooking oil stains.

On the other hand, the content of the nonionic surfactant as the component (c) in the present invention is preferably 0.3% by mass or more, more preferably 0.6% by mass or more, from the viewpoint of foaming property at the time of washing in a washing machine.

From the viewpoint of compatibility between easy rinsing property in which foam rapidly disappears during rinsing and smearing detergency on cooking oil stains, the mass ratio of the content of the nonionic surfactant as the component (c) to the content of the component (a) in the present invention (c)/(a) is preferably 7 or less, more preferably 4.4 or less, further preferably 2.3 or less, and further preferably 0.4 or less.

On the other hand, from the viewpoint of foaming properties during washing in a washing machine, the mass ratio of the content of the nonionic surfactant as the component (c) to the content of the component (a) in the present invention, (c)/(a) is preferably 0.02 or more, more preferably 0.04 or more.

The mass ratio of the content of component (c) to the content of component (b) in the present invention is (c)/(b) 10 or less, preferably 6 or less, more preferably 2.7 or less, from the viewpoint of providing excellent rinsing property in which foam disappears rapidly during rinsing and excellent detergency for smearing cooked oil stains.

On the other hand, from the viewpoint of foaming properties during washing in a washing machine, the mass ratio of the content of component (c) to the content of component (b) in the present invention, (c)/(b) is preferably 0.1 or more, more preferably 0.2 or more.

< ingredient (d) >

The liquid detergent composition of the present invention may contain an appropriate amount of (d) a water-miscible organic solvent. The component (d) may be any water-miscible organic solvent commonly used in detergent compositions, and is preferably a water-miscible organic solvent having 1 or 2 groups selected from a hydroxyl group and an ether group. The term "water-miscible organic solvent" as used herein means an organic solvent in which 50g or more of the organic solvent is dissolved in 1L of 25 ℃ deionized water, that is, an organic solvent in which 50g/L or more of the organic solvent is dissolved in water.

Examples of the water-miscible organic solvent as the component (d) include (1) alkanols; (2) alkylene glycols having 2 to 6 carbon atoms such as ethylene glycol, propylene glycol, butylene glycol, or hexylene glycol, or glycerols (hereinafter, referred to as glycols in some cases); (3) polyalkylene glycols comprising alkylene glycol units having 2 to 4 carbon atoms; (4) (poly) alkylene glycol (mono-or di-) alkyl ethers (hereinafter, also referred to as alkyl ethers) comprising (poly) alkylene glycols having 2 to 4 carbon atoms of alkylene glycol units and alkanols having 1 to 5 carbon atoms, such as diethylene glycol monomethyl ether, diethylene glycol dimethyl ether, triethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol diethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, tripropylene glycol monomethyl ether, diethylene glycol monobutyl ether, 1-methoxy-2-propanol, or 1-ethoxy-2-propanol; (5) alkyl glyceryl ethers having an alkyl group having 1 to 8 carbon atoms; (6) aromatic ethers of (poly) alkylene glycol having alkylene glycol units having 2 to 3 carbon atoms.

From the viewpoint of achieving excellent solubility and product stability, it is preferable to use 1 or more selected from the above-described categories (1) to (6) as the component (d), and it is more preferable to use a solvent selected from the above-described categories (1) of alkanols, (2) glycols, (4) of alkyl ethers, and (6) of aromatic ethers. In the present invention, specific preferable examples thereof include 1 or 2 selected from propylene glycol and diethylene glycol monobutyl ether.

From the viewpoint of the smear cleaning power on the cooking oil stain, it is preferable that the content of the (d) water-miscible organic solvent in the liquid detergent composition of the present invention is as small as possible, and specifically, the content of the component (d) in the liquid detergent composition of the present invention is preferably 10% by mass or less, more preferably 9% by mass or less, further preferably 7% by mass or less, further preferably 5% by mass or less, further preferably 2% by mass or less, further preferably 0.1% by mass or less, further preferably 0.01% by mass or less, further preferably 0% by mass, that is, further preferably not contained.

The mass ratio of the content of the component (d) to the total of the content of the components (a) and (b) is, from the viewpoint of the smear cleaning power on the cooking oil stain, (d)/((a) + (b)) is 0.5 or less, preferably 0.4 or less, more preferably 0.3 or less, still more preferably 0.08 or less, still more preferably 0.01 or less, and still more preferably 0.

< other ingredients >

In the liquid detergent composition of the present invention, other components may be added in addition to the above components within a range not impairing the object or effect of the present invention. As other components, for example: an anionic surfactant other than the component (a) of the present invention, and an amphoteric surfactant other than the component (b) of the present invention; and optional components such as chelating agents, foam boosters, builders, rust inhibitors, viscosity modifiers, antioxidants, antibacterial and antifungal agents, preservatives, coloring agents, perfumes, and the like, which are generally used in liquid detergent compositions.

Examples of the anionic surfactant other than the component (a) of the present invention include: sodium 2-ethylhexyl sulfate, sodium decyl sulfate, and the like.

The amphoteric surfactant other than the component (b) of the present invention includes, for example: alkylamine oxides such as octadecyldimethylamine oxide; and alkyl imidazoline betaines such as lauryl imidazoline betaine and coco imidazoline betaine; amidopropyl betaines such as lauramidopropyl betaine, palm kernel oil fatty acid amidopropyl betaine, and coconut oil fatty acid amidopropyl betaine; alkyl sulfobetaines such as lauryl ethoxy sulfobetaine and stearyl ethoxy sulfobetaine; hydroxy sulfobetaines such as coconut oil fatty acid hydroxy sulfobetaine, lauryl hydroxy sulfobetaine, and tetradecyl hydroxy sulfobetaine; alkyl carboxybetaines such as dilauryl dimethyl carboxybetaine and stearyl hexyl methyl carboxybetaine.

Examples of the chelating agent include: ethylenediaminetetraacetic acid, phosphonates, and the like.

Examples of the foam enhancer include: fatty acid alkanolamides, and the like.

Examples of the builder include: inorganic builders such as sodium tripolyphosphate, sodium silicate, sodium carbonate, sodium sulfate, and the like; organic builders such as sodium citrate and sodium polyacrylate.

From the viewpoint of detergency and ease of rinsing, the content of the inorganic builder in the liquid detergent composition of the present invention is preferably 50% by mass or less, more preferably 40% by mass or less, still more preferably 20% by mass or less, and still more preferably 0% by mass, that is, not contained.

Examples of the rust inhibitor include: pentaerythritol esters, phytates, and the like.

Examples of the viscosity modifier include: hydroxyethyl cellulose, methyl cellulose, carboxyvinyl polymers, and the like.

Examples of the antioxidant include: butyl hydroxy toluene, distyrenated cresol, sodium sulfite, sodium bisulfite and the like.

Examples of the antibacterial and antifungal agents include: silver ion antibacterial agent, zinc oxide, copper oxide, ammonium dihydrogen phosphate, lithium carbonate, vanillin or vinyl vanillin compound, etc.

Examples of the preservative include: methyl paraben, butyl paraben, 1, 2-benzothiazolin-3-one, and the like.

When the liquid detergent composition of the present invention further optionally contains an amphoteric surfactant other than component (b), the mass ratio of the content of component (b) to the total content of the amphoteric surfactants other than components (b) is preferably 0.2 or more and less than 1, more preferably 0.4 or more and less than 1, further preferably 0.6 or more and less than 1, and still further preferably 0.8 or more and less than 1, from the viewpoint of good rinsing properties at the time of rinsing.

In the present invention, the total content of the surfactants other than fatty acids is 2 to 40% by mass, preferably 5 to 32.5% by mass, and more preferably 7 to 25% by mass. Here, "surfactant other than fatty acid" means all surfactants other than fatty acid contained in the liquid detergent composition of the present invention.

In addition, the liquid detergent composition of the present invention has a pH value at 25 ℃ of preferably 7 or less, more preferably 6 or less, and even more preferably 5 or less, from the viewpoint of the spreadability on the cooking oil stains and the ease of rinsing in which the foam rapidly disappears during rinsing. From the viewpoint of use in rinsing, the liquid detergent composition of the present invention has a pH value at 25 ℃ of preferably 1 or more, more preferably 3 or more, and still more preferably 3.5 or more. Here, the pH may be 1 or 2 or more selected from the group consisting of alkali metal hydroxides, organic bases, inorganic acids, and organic acids; more preferably 1 or 2 or more selected from sodium hydroxide, potassium hydroxide, alkanolamine, ammonia, sulfuric acid, hydrochloric acid, citric acid, lactic acid, tartaric acid, oxalic acid, malic acid, etc.; further preferably 1 or 2 selected from hydrochloric acid and sodium hydroxide.

In the liquid detergent composition of the present invention, water is used as the rest of the components (a) to (d) and optional components. As the water, water having no influence on the composition, such as deionized water, is preferable. From the viewpoint of easily adjusting the pH of the liquid detergent composition, the pH adjuster is preferably 1 or 2 or more selected from hydroxides of alkali metals, organic bases, inorganic acids, and organic acids, more preferably 1 or 2 or more selected from sodium hydroxide, potassium hydroxide, alkanolamines, ammonia, sulfuric acid, hydrochloric acid, citric acid, lactic acid, tartaric acid, oxalic acid, malic acid, and the like, and further preferably 1 or 2 selected from hydrochloric acid and sodium hydroxide. The pH value regulator needs to meet the following requirements: the mass ratio of the content of the aqueous solution containing the pH adjustor to the total content of the surfactants other than the fatty acid is 2.43 or more. From the viewpoint of smear cleaning power on cooking oil stains, it is preferably 3.57 or more; from the viewpoint of foamability and smear cleaning power for cooking oil stains, it is preferably 22.5 or less, and more preferably 18.0 or less.

The liquid detergent composition of the present invention can be produced by appropriately mixing the respective components.

The liquid detergent composition for clothing of the present invention is suitable for household washing, more preferably hand washing, and can be suitably used for textile products such as clothing, bedding, and fabric, preferably as a detergent for clothing.

Embodiments of the present invention are described below.

[1] A liquid detergent composition comprising the following components (a) to (b) and water:

(b) an amine oxide surfactant represented by the following general formula (1),

R¹represents a linear or branched saturated or unsaturated hydrocarbon group having 6 to 16 carbon atoms, R²Represents a carbon number of 1 to 3Alkylene radical, R³、R⁴Independently of each other, an alkyl group or a hydroxyalkyl group having 1 to 3 carbon atoms; or R³、R⁴Each independently represents an alkylene group or hydroxyalkylene group having 1 to 3 carbon atoms bonded to each other through a hetero atom, X represents a group selected from the group consisting of-COO-, -CONH-, and-O-, and m is a number of 0 or 1.

[2] The liquid detergent composition according to [1], wherein the component (a) contains an alkyl sulfate or alkenyl sulfate having 16 carbon atoms in an alkyl group or an alkenyl group as the component (a-2).

[3] The liquid detergent composition according to [1] or [2], wherein the mass ratio of the content of the component (a-2) to the content of the component (a ((a-2)/(a)) is preferably 0.07 or more, more preferably 0.13 or more, further preferably 0.2 or more, and preferably 0.43 or less, more preferably 0.33 or less, and further preferably 0.03 to 1, more preferably 0.03 to 0.43, further preferably 0.03 to 0.33, further preferably 0.07 to 0.33, further preferably 0.13 to 0.33, and further preferably 0.2 to 0.33.

[4] The liquid detergent composition according to any one of the above [1] to [3], further comprising 1 or 2 or more selected from sulfuric acid ester salts other than the component (a-2), α -olefin sulfonates, paraffin sulfonates, polyoxyethylene alkyl sulfuric acid ester salts, and alkylbenzene sulfonates in the component (a).

[5] The liquid detergent composition according to [4], wherein the component (a) further contains 1 or 2 or more selected from alkyl sulfate salts or alkenyl sulfate salts having 12 to 14 carbon atoms in an alkyl group or an alkenyl group other than the component (a-2) as the component (a-1).

[6] The liquid detergent composition according to any one of the above [1] to [5], wherein the counter ion of the anionic surfactant is 1 or 2 or more selected from alkali metal ions, alkaline earth metal ions, ammonium ions and alkanolammonium ions, and more preferably 1 or 2 or more selected from alkali metal ions.

[7] The liquid detergent composition according to [6], wherein the alkali metal ion is preferably 1 or 2 selected from sodium ion and potassium ion, and more preferably sodium ion.

[8] The liquid detergent composition according to any one of [1] to [7], wherein the component (b) is preferably 1 or 2 or more selected from the group consisting of hexyldimethylamine oxide, octyldimethylamine oxide, decyldimethylamine oxide, dodecyldimethylamine oxide, tetradecyldimethylamine oxide, hexadecyldimethylamine oxide, N-octylmorpholine-N-oxide, N-decyldorpholine-N-oxide, N-dodecylmorpholine-N-oxide, and N-tetradecylmorpholine-N-oxide, more preferably 1 or 2 or more selected from the group consisting of octyldimethylamine oxide, decyldimethylamine oxide, dodecyldimethylamine oxide, and N-decyldimethylarylamine oxide, more preferably 1 or 2 or more selected from octyl dimethyl amine oxide, decyl dimethyl amine oxide, and N-decyl morpholine-N-oxide, and still more preferably octyl dimethyl amine oxide.

[9] The liquid detergent composition according to any one of [1] to [8], wherein the total content of the component (a) and the component (b), (a) + (b) is preferably 2% by mass or more, more preferably 3% by mass or more, more preferably 5% by mass or more, further preferably 7% by mass or more, and preferably 30% by mass or less, more preferably 25% by mass or less, and preferably 2 to 30% by mass, more preferably 2 to 25% by mass, more preferably 3 to 25% by mass, further preferably 5 to 25% by mass, and further preferably 7 to 25% by mass.

[10] The liquid detergent composition according to any one of the above [1] to [9], further comprising (c) a nonionic surfactant, the nonionic surfactant (c) is preferably 1 or 2 or more selected from among polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, alkyl polyglucosides, alkyl glucosides, sucrose fatty acid esters, polyglycerol fatty acid esters, fatty acid monoethanolamides, fatty acid diethanolamides, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbitol fatty acid esters, and alkyl saccharide surfactants, more preferably 1 or 2 or more selected from among polyoxyalkylene alkyl ethers, fatty acid monoethanolamides, and fatty acid diethanolamides, and still more preferably 1 or 2 or more selected from among polyoxyalkylene alkyl ethers and fatty acid monoethanolamides.

[11] The liquid detergent composition according to [10], wherein the mass ratio of the content of the component (c) to the content of the component (a), (c)/(a), is 7 or less, preferably 4.4 or less, more preferably 2.3 or less, still more preferably 0.4 or less, and preferably 0.02 or more, more preferably 0.04 or more.

[12] The liquid detergent composition according to [10] or [11], wherein the mass ratio of the content of the component (c) to the content of the component (b), (c)/(b), is 10 or less, preferably 6 or less, more preferably 2.7 or less, and preferably 0.1 or more, more preferably 0.2 or more.

[13] The liquid detergent composition according to any one of [1] to [12], further comprising an amphoteric surfactant other than the component (b).

[14] The liquid detergent composition according to [13], wherein the mass ratio of the content of the component (b) to the total content of the amphoteric surfactants other than the components (b) and (b) is preferably 0.2 or more and less than 1, more preferably 0.4 or more and less than 1, further preferably 0.6 or more and less than 1, and further preferably 0.8 or more and less than 1.

[15] The liquid detergent composition according to any one of [1] to [14], further comprising (d) a water-miscible organic solvent.

[16] The liquid detergent composition according to [15], wherein the mass ratio of the content of the component (d) to the total content of the components (a) and (b), (d)/((a) + (b)) is 0.5 or less, preferably 0.4 or less, more preferably 0.3 or less, further preferably 0.08 or less, further preferably 0.01 or less, and further preferably 0.

[17] The liquid detergent composition according to any one of [1] to [16], wherein the content of the component (a) is preferably 0.75% by mass or more, more preferably 1% by mass or more, further preferably 2% by mass or more, further preferably 3% by mass or more, further preferably 5% by mass or more, further preferably 25% by mass or less, further preferably 20% by mass or less, and preferably 0.75 to 25% by mass, more preferably 1 to 20% by mass, further preferably 2 to 20% by mass, further preferably 5 to 20% by mass.

[18] The liquid detergent composition according to any one of [1] to [17], wherein the content of the component (b) is preferably 0.3% by mass or more, more preferably 0.5% by mass or more, further preferably 1% by mass or more, further preferably 1.5% by mass or more, further preferably 2% by mass or more, and preferably 6% by mass or less, more preferably 5% by mass or less, further preferably 3% by mass or less, and preferably 0.3 to 6% by mass, more preferably 0.3 to 5% by mass, further preferably 0.5 to 3% by mass, further preferably 1 to 3% by mass, further preferably 1.5 to 3% by mass, and further preferably 2 to 3% by mass.

[19] The liquid detergent composition according to any one of [10] to [18], wherein the content of the component (c) is preferably 0.3% by mass or more, more preferably 0.6% by mass or more, and is preferably 16% by mass or less, more preferably 10% by mass or less, further preferably 6% by mass or less, and further preferably 1% by mass or less.

[20] The liquid detergent composition according to any one of [15] to [19], wherein the content of the component (d) is preferably 10% by mass or less, more preferably 9% by mass or less, still more preferably 7% by mass or less, still more preferably 5% by mass or less, still more preferably 1% by mass or less, still more preferably 0.1% by mass or less, still more preferably 0.01% by mass or less, and still more preferably 0% by mass.

[21] The liquid detergent composition according to any one of the above [1] to [20], wherein the total content of the surfactants other than the fatty acid is 2 to 40% by mass, preferably 5 to 32.5% by mass, and more preferably 7 to 25% by mass.

[22] The liquid detergent composition according to any one of [1] to [21], wherein the pH value at 25 ℃ is 7 or less, preferably 6 or less, and more preferably 5 or less.

[23] A washing method, wherein the liquid detergent composition according to any one of the above [1] to [22] is applied to a textile product having oily soil and washed.

[24] A washing method, wherein the liquid detergent composition according to any one of the above [1] to [22] is applied to clothes having greasy dirt and washed.

The liquid detergent composition of the present invention can be suitably used for textile products such as clothes, bedding, and fabric, and is preferably used as a detergent for clothes.

Examples

Hereinafter, embodiments of the present invention will be further described and disclosed by way of examples. The examples are merely illustrative of the invention and are not intended to be limiting in any way. Using the components shown in the following table, liquid detergent compositions of examples and comparative examples were obtained. The numerical values of the amounts of the respective components in the table are expressed in mass% as the effective components, and the values of the mass ratios of the components in the table are described with the denominator (/1) omitted.

The compositions of examples and comparative examples were obtained by mixing the components shown in tables 1 to 8. The pH was adjusted using hydrochloric acid and aqueous sodium hydroxide. The following evaluations were carried out using each of the obtained compositions. The results are shown in tables 1 to 8.

[ method for preparing "Cotton half-sleeved shirts for evaluation >

"Cotton half-sleeved shirts for evaluation" were prepared in the following manner. Specifically, 2.5kg of a commercially available cotton half-sleeved shirt (manufactured by Shanghai Three Gun Gun Co., Ltd., round collar, size: L, cotton content: 100%) was placed in a Washing Machine (Qingdao Haier Washing Machine Co., Ltd., specification: XQS60-ZY1128), detergent was added thereto, and hard water (CaCl was converted to 89.5mg/L in terms of calcium carbonate) was added at a temperature of 20 ℃. (CaCl was converted to CaCl)₂With MgCl₂·6H₂O was mixed at a molar ratio of 6: 4), washing was repeated 5 times with the following conditions set. The conditions for each wash were: the amount of water was 54L, and the amount of detergent was 27g (i.e., the amount of detergent used relative to the amount of detergent used)The water amount (detergent (g)/water (L)) was 0.5g/L), the washing time was 12 minutes, rinsing was performed 2 times with stored water, and dewatering was performed for 5 minutes. The detergent was a mixture of a nonionic surfactant (polyoxyethylene alkyl ether having an average of 6 moles of oxyethylene groups added to a primary alcohol having an alkyl group having 12 carbon atoms, trade name: EMULGEN 108) and amorphous sodium silicate and sodium carbonate at a mass ratio of 1:1: 3.

The cotton half-sleeve shirt subjected to the final dehydration was put in a two-tub washing machine (manufactured by Songhua Co., Ltd., XPB52-500S), rinsed with running water using hard water at a temperature of 20 ℃ in terms of calcium carbonate to 89.5mg/L until no foam was formed, dehydrated for 5 minutes, and then naturally dried to obtain an "evaluation cotton half-sleeve shirt".

< method for measuring basicity >

The method for measuring the alkalinity of water used for preparing the water dilution is shown below (hereinafter, the alkalinity of the present invention refers to a value measured by this method unless otherwise specified).

100mL of test water was taken in a 200mL beaker, and 0.15mL of bromocresol green-methylred ethanol solution (Wako pure chemical industries, Ltd.) was added as an indicator. When residual chlorine was present in the test water, a sodium thiosulfate solution (0.3 w/v%) was added to 100mL of the test water in advance to remove the residual chlorine. The solution was stirred slowly and titrated with 10mmol/L sulfuric acid until the color of the solution changed from blue to purple. The basicity was calculated by the following formula.

Alkalinity (CaCO)₃mg/L)＝a×10

In the formula, a: titration of the required 10mmol/L sulfuric acid (mL)

When the color of a colored sample or the like is not changed significantly by adding an indicator, a quantity (mL) of 10mmol/L sulfuric acid required for the pH to reach 4.8 is defined as a by using a pH meter instead of the indicator.

< method for evaluating foamability during washing in washing machine >

Three cotton half-sleeve shirts for evaluation were placed in a vertical Washing Machine (Qingdao Haier Washing Machine Co., Ltd., specification: XQS60-ZY1128), the mode was adjusted to 22L water Washing mode, and the mode was added to the present application to practice the present inventionEach of the compositions prepared in examples and comparative examples 22g was used at a water temperature of 20 ℃ and a alkalinity of 179mg/L (this hard water corresponds to 10 ℃ DH in Germany hardness tester) and 65CaCO₃Hard water [ to calcium chloride (CaCl) ] of mg/L and pH7.1₂·2H₂O)1.57g with magnesium sulfate (MgSO₄·6H₂O)1.45g and sodium bicarbonate (NaHCO)₃)1.6g deionized water 10L adjusted with hydrochloric acid, Ca/Mg 6/4 (molar ratio)]And automatically washing by a washing machine (washing time is 10 minutes, water storage rinsing is carried out for 2 times, and dehydration is carried out for 2 minutes). After 5 minutes from the start of the wash, once discontinued, a straight edge was inserted slightly across the foam to scrape the foam off of the surface, and the height from the water surface to the upper end of the foam was measured and marked in centimeters (cm). The 0cm is assumed to be the case where the foam is too little and does not cover the water surface.

< evaluation method of foaming Property in hand washing >

Into a circular washbasin (bottom surface inner diameter 28cm, surface inner diameter 35cm, height 13.5cm), water temperature of 20 deg.C, calcium carbonate converted to 179mg/L (this hard water is equivalent to 10 ° DH of German hardness tester), and alkalinity of 65CaCO₃Hard water [ to calcium chloride (CaCl) ] of mg/L and pH7.1₂·2H₂O)1.57g with magnesium sulfate (MgSO₄·6H₂O)1.45g and sodium bicarbonate (NaHCO)₃)1.6g of hard water prepared by adding deionized water to 10L and adjusting with hydrochloric acid, Ca/Mg 6/4 (molar ratio)]3L. To these compositions, 15g each of the compositions prepared in examples and comparative examples was added and the compositions were uniformly dissolved while stirring with a hand. Subsequently, 3 pieces of the cotton half-sleeved shirts for evaluation prepared by the above method were put into the pot and left to stand for 1 minute in a state of being completely immersed in the washing liquid. After 1 minute of standing, each piece was evaluated by rubbing 50 times with a cotton half-sleeve shirt (converting 1 back and forth (about 1 second) of cloth to cloth rubbing). Then, the cotton half-sleeve shirts for evaluation were taken out, and the cotton half-sleeve shirts for evaluation were wrung from a position 30cm above the washbasin until the water content became 100 to 140 mass% with respect to the cotton half-sleeve shirts for evaluation, and the state of the liquid surface of 3 freshly wrung washing liquids was confirmed. A ruler was inserted slightly across the foam to scrape the surface foam off, and then the measurement was taken from the water surface onto the foamThe height of the tip, marked in centimeters (cm).

In this evaluation, a value of 2cm or more is acceptable, and a larger value is more preferable.

< evaluation method of rinsing Property in hand washing >

Into a circular washbasin (bottom surface inner diameter 28cm, surface inner diameter 35cm, height 13.5cm), water temperature of 20 deg.C, calcium carbonate converted to 179mg/L (this hard water is equivalent to 10 ° DH of German hardness tester), and alkalinity of 65CaCO₃Hard water [ to calcium chloride (CaCl) ] of mg/L and pH7.1₂·2H₂O)1.57g with magnesium sulfate (MgSO₄·6H₂O)1.45g and sodium bicarbonate (NaHCO)₃)1.6g of hard water prepared by adding deionized water to 10L and adjusting with hydrochloric acid, Ca/Mg 6/4 (molar ratio)]5L, 3 pieces of the cotton half-sleeved shirts for evaluation were put in the foam evaluation, and then wrung out. After the evaluation cotton half-sleeved blouse was loosened in the rinsing water, every 1 loosened evaluation cotton half-sleeved blouse was lifted up (to a height of about 5cm from the rinsing liquid surface as a whole) by grasping the collar portion with the cotton half-sleeve shirt, and then put back into the rinsing water again. After repeating the rinsing of the up-and-down movement 10 times for every 1 piece of the cotton half-sleeve shirts for evaluation, the cotton half-sleeve shirts for evaluation were wrung from a position 30cm above the washbasin until the water content became 100 to 140 mass% with respect to the cotton half-sleeve shirts for evaluation, and the state of the rinsing liquid surface after the 3 pieces of the shirts were wrung was confirmed. A ruler was inserted slightly across the foam to scrape the surface of the foam flat and then the height from the water surface to the upper end of the foam was measured and marked in centimeters (cm). This was 1 evaluation. Further, the same evaluation was repeated 1 time for the wrung cotton half-sleeved blouse for evaluation (3 pieces of the cotton half-sleeved blouse for evaluation were used for evaluation from 1 liquid detergent composition contained in the above evaluation of foamability).

In this evaluation, the case where the value at the 2 nd time is 1cm or less is acceptable, and the smaller the value, the more preferable the value is. When the value at the 2 nd order is the same, the smaller the value at the 1 st order is, the more preferable.

If the foam is too small and does not cover the water surface, the ratio of "the area of the water surface covered with the foam" to "the entire area of the water surface" is denoted by "%".

The case where foam was not confirmed is marked with "none". In this case, the smaller the value, the more preferable.

< method for evaluating smear cleaning force >

< preparation of artificially contaminated Fabric >

The artificially contaminated cloth was cut into 6cm × 6cm cotton cloth (100% cotton, 40S cotton, purchased from Shanghai Leyi cloth Co., Ltd.), 0.01mL of a chili oil prepared as described below was applied to each 1 piece, and the cloth was left standing in a dark room without light for 2 hours.

Spicy oil

50g of Youkoujia chili powder (Sichuan Youjia food Co., Ltd.) was added to 200g of soybean oil (refined first-class, Gonglong), and after stirring at 80 ℃ for 2 hours, it was filtered with Whatman filter paper (class 1, particle retention energy: 11 μm) and used.

< washing conditions >

As evaluation of each liquid detergent composition, the artificially contaminated cloth was set to 4 pieces and 1 set. After each of the artificially contaminated cloths was coated with 0.5g of the liquid detergent composition and left to stand for 15 minutes, 4 sheets of the artificially contaminated cloths coated with the detergent composition were charged to a water temperature of 20 ℃ and a hardness of 179mg/L in terms of calcium carbonate (this hard water corresponds to 10 ℃ DH in a German hardness tester), and an alkalinity of 65CaCO₃Hard water [ to calcium chloride (CaCl) ] of mg/L and pH7.1₂·2H₂O)1.57g with magnesium sulfate (MgSO₄·6H₂O)1.45g and sodium bicarbonate (NaHCO)₃)1.6g of hard water prepared by adding deionized water to 10L and adjusting with hydrochloric acid, Ca/Mg 6/4 (molar ratio)]In 1L (2.0 g in total of the liquid detergent composition contained in each of the artificially contaminated cloths), the cloth was washed with an oscillation type scale-washing machine (tergometer) (RIDCi RHL QIII type vertical stain removal measuring machine, manufactured by national institute of daily chemical industries) at a rotation speed of 200rpm for 10 minutes at a temperature of 20 ℃. The washed artificially contaminated cloth (hereinafter, referred to as treated cloth) was dehydrated for 1 minute by a two-tub washing machine (manufactured by Matsushita, XPB52-500S), dried at 40 ℃ for 1 hour, and then measured for reflectance (C light source 2 degree field) by a colorimeter (Nippon Denshoku Kogyo Co., Ltd., Color meter ZE 6000),the Z value is recorded.

In this evaluation, 76 or more is acceptable, and the larger the value is, the more preferable the value is.

< method of measuring pH >

The pH measurement was carried out using a pH meter (D-52) and a pH electrode (6367-10D) manufactured by horiba, Ltd., in the following order. The standard solutions were prepared by transferring a pH4 standard solution (product No. K9084KF), a pH7 standard solution (product No. K9084KG) and a pH9 standard solution (product No. K9084KH) manufactured by Yokogawa electric corporation to a 50ml beaker.

The pH electrode was thoroughly washed with ion-exchanged water and wiped with a tissue paper (tissue paper). The internal liquid replenishment port of the pH electrode was opened and the pH electrode was immersed in a beaker containing a standard solution of pH7. In a state where the pH electrode was immersed in the sample for 3cm, the "CAL" key was pressed after 1 minute. After "HOLD" indicated stopping the blinking, the pH electrode was thoroughly washed with ion-exchanged water and wiped with tissue paper. Subsequently, the same operation was repeated using the pH4 standard solution and the pH9 standard solution, and three-point calibration was performed. After the calibration is completed, the electrode is immersed in a pH7 standard solution in a calibration mode, a 'ENTER' key is pressed, a pH reproducibility check is performed, and if the pH is within 0.05, the calibration is completed.

Next, the pH electrode was thoroughly washed with ion-exchanged water and wiped with a tissue paper. After confirming that the internal liquid replenishment port of the pH electrode was opened, the "MEAS" key was pressed after 2 minutes in a state where the pH electrode was immersed in the sample for 3 cm.

Note: the compounding ingredients used in the examples and comparative examples are collectively shown below.

< ingredient (a) >

(a-1)：

(a-1-1): sodium dodecyl sulfate (manufacturer: Tokyo chemical industry Co., Ltd.)

The values of (a-1-1) in examples 7 and 8 in table 1 and examples 40 and 44 in table 6 are concentrations of sodium lauryl sulfate derived from the mixed polyoxyethylene (EO average molar number of addition ═ 3) sodium lauryl ether sulfate.

(a-2-2): sodium tetradecyl sulfate (manufacturer: Wako Chemical, Ltd.)

(a-2): sodium hexadecyl sulfate (manufacturer: Wako Chemical, Ltd.)

(a-3): sodium C14/C16 alpha-olefin sulfonate (trade name: Hostapur OS Liquid, active ingredient content: 42% by mass, manufacturer: Clariant Produkte (Deutschland) GmbH)

(a-4): sodium secondary alkylsulfonate (trade name: Hostapur SAS 60, content of active ingredient: 60% by mass, manufacturer: Clariant Produkte (Deutschland) GmbH)

(a-5): polyoxyethylene (EO average molar number of addition ═ 3) sodium lauryl ether sulfate (trade name: EMAL 20C, content of active ingredient: 25% by mass, content of sodium lauryl sulfate: 5.5% by mass, manufacturer: Kao corporation)

The values in tables 1 and 6 are the concentrations of the effective components other than sodium lauryl sulfate in the sodium laureth sulfate to be blended (EO average molar number ═ 3).

(a-6): sodium dodecylbenzenesulfonate (trade name: NEOPELEX G-25, content of active ingredient: 25% by mass, manufacturer: Kao corporation)

< component (a') [ (anionic surfactant other than component (a) ]

(a' -1): sodium 2-ethylhexyl sulfate (trade name: Disponil EHS 47, content of active ingredient: 47% by mass, manufacturing company: BASF SE)

(a' -2): sodium decyl sulfate (trade name: EMAL 3F, content of active ingredient: 33% by mass, manufacturing company: Kao corporation)

< ingredient (b) >

(b-1): octyl dimethyl amine oxide (active ingredient content: 50% by mass, manufacturer: Kao corporation)

(b-2): decyl dimethyl amine oxide (manufacturer: Kao corporation)

(b-3): lauryl dimethyl amine oxide (trade name: AMPHITOL 20N, active ingredient content: 35% by mass, manufacturer: Kao corporation)

(b') component > [ (amphoteric surfactant other than component b) ]

(b' -1): lauryl hydroxy sulfobetaine (trade name: AMPHITOL 20HD, content of active ingredient: 30% by mass, manufacturer: Kao corporation)

< ingredient (c) >

(c-1): polyoxyethylene addition (EO average molar number of addition 10) mixture of lauryl polyoxyethylene ether and myristyl polyoxyethylene ether (trade name: KAO EMULGEN 110L, manufacturer: Kao (Shanghai) chemical Co., Ltd.)

(c-2): polyoxyethylene addition (EO average molar number of addition 21) lauryl polyoxyethylene ether (trade name: EMULGEN 121, manufacturer: Kao corporation)

(c-3): coconut fatty acid monoethanolamide (coconut amide MEA) (trade name: AMINONC-01S, manufacturer: Shanghai King Chemicals Co., Ltd.)

< ingredient (d) >

(d-1): PROPYLENE GLYCOL (trade name: PROPYLENE GLYCOL USP/EP (US) (BR) (TH), manufacturer: Dow Chemical Company)

(d-2): diethylene glycol monobutyl ether (trade name: Sinopol BDG-LS, manufacturer: SINO-JAPAN CHEMICAL CO., LTD.)

TABLE 1

TABLE 2

TABLE 3

TABLE 4

TABLE 5

TABLE 6

TABLE 7

TABLE 8

As is apparent from tables 1 to 8, in examples containing the component (a), the component (b) and water as essential components, and the component (a) contains an alkyl or alkenyl sulfate salt in which the number of carbon atoms of the alkyl or alkenyl group is 16 or more and 18 or less, the foamability of the liquid detergent composition, the smearing detergency against greasy dirt on cooked soil, and the easy-rinsing property in which foam rapidly disappears during rinsing can be simultaneously achieved.

The liquid detergent composition of the present invention may further optionally contain an anionic surfactant other than component (a), and/or an amphoteric surfactant other than component (b), and/or component (c), and/or component (d), whereby the effects of the present invention can be achieved. When these components are contained, it is preferable that the mass ratio ((b)/((b) + (b'))) of the total content ((a) + (b)) of the component (a) and the component (b) and/or the content of the component (b) to the total content of the amphoteric surfactant other than the component (b) and the component (b)), and/or the mass ratio ((c)/(a)) of the content of the component (c) to the content of the component (a) and/or the mass ratio ((c)/(b)) of the content of the component (c) to the content of the component (b) satisfy a specific range, thereby, excellent foamability, coating cleaning power to the cooking oil stain, easy rinsing property that the foam disappears rapidly during rinsing can be obtained, besides, when the component (c) is contained in a specific content, the foaming property in washing in a washing machine can be further improved.

As described above, the liquid detergent composition of the present invention has a high ability to clean cooking oil stains by spreading, foams rapidly in hand washing and machine washing, and can be easily rinsed in rinsing, and is particularly suitable for use as a detergent for clothes.

Claims

1. A liquid cleaning composition, wherein,

Contains the following components (a) to (b) and water:

(a) An anionic surfactant having 12 to 18 carbon atoms, and the anionic surfactant does not include a fatty acid, wherein the (a) component contains (a-2) component and is selected from (a-2) ) components other than one or more of alkyl or alkenyl sulfate salts, α-olefin sulfonates, paraffin sulfonates, polyoxyethylene alkyl sulfate salts, and alkylbenzene sulfonates , the mass ratio of the content of the alkyl sulfate ester salt or alkenyl sulfate ester salt having 16 or more and 18 or less carbon atoms in the alkyl or alkenyl group of the component (a-2) relative to the content of the component (a) ( a-2)/(a) is 0.03 or more and 0.43 or less, and in the liquid detergent composition, the content of component (a) is 0.75 to 25% by mass;

(b) amine oxide type surfactant, the amine oxide type surfactant is selected from hexyl dimethyl amine oxide, octyl dimethyl amine oxide, decyl dimethyl amine oxide, dodecyl dimethyl amine oxide One or more of the group consisting of tetradecyl amine oxide, tetradecyl dimethyl amine oxide, and cetyl dimethyl amine oxide, and in the liquid cleaning composition, the content of component (b) is 0.3 to 0.3 6 mass %.

2. The liquid cleanser composition of claim 1, wherein:

The component (a) contains an alkyl sulfate ester salt or an alkenyl sulfate ester salt having 16 carbon atoms of an alkyl group or an alkenyl group as the component (a-2).

3. The liquid cleanser composition of claim 1, wherein:

The amphoteric surfactant other than the component (b) is further contained, and the mass ratio of the content of the component (b) to the total content of the component (b) and the amphoteric surfactant other than the component (b) is 0.2 or more and less than 1.

4. The liquid cleanser composition of claim 1 wherein,

The nonionic surfactant which further contains (c) component.

5. The liquid cleanser composition of claim 4, wherein:

(c) The nonionic surfactant is selected from the group consisting of polyoxyalkylene alkyl ether, polyoxyalkylene alkyl ether, fatty acid sucrose ester, polyglycerol fatty acid ester, fatty acid monoethanolamide, fatty acid diethanolamide, polyoxyethylene hydrogenated castor One or more of sesame oil, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, and alkyl saccharide surfactants.

6. The liquid cleanser composition of claim 5, wherein:

The alkyl saccharide surfactant includes an alkyl polyglucoside.

7. The liquid cleanser composition of claim 1, wherein:

With or without (d) a water-miscible organic solvent, as the mass ratio of the content of the (d) component to the total content of the (a) and (b) components, (d)/((a)+(b)) is 0.5 or less.

8. The liquid cleanser composition of claim 1, wherein:

With or without (d) a water-miscible organic solvent, as the mass ratio of the content of the (d) component to the total content of the (a) and (b) components, (d)/((a)+(b)) is 0.4 or less.

9. The liquid cleanser composition of claim 1, wherein:

With or without (d) a water-miscible organic solvent, as the mass ratio of the content of the (d) component to the total content of the (a) and (b) components, (d)/((a)+(b)) is 0.3 or less.

10. The liquid cleanser composition of claim 1 wherein,

The (d) water-miscible organic solvent is contained or not contained, and the content of the (d) component is 10% by mass or less.

11. The liquid cleanser composition of claim 1 wherein,

The (d) water-miscible organic solvent is contained or not contained, and the content of the (d) component is 9 mass % or less.

12. The liquid cleanser composition of claim 1 wherein,

The (d) water-miscible organic solvent is contained or not contained, and the content of the (d) component is 5 mass % or less.

13. The liquid cleanser composition of claim 1 wherein,

Further, in the component (a), one or two kinds selected from the group consisting of alkyl sulfate ester salts or alkenyl sulfate ester salts having 12 to 14 carbon atoms of an alkyl group or an alkenyl group other than the component (a-2) are contained. The above is the component (a-1).

14. The liquid cleanser composition according to any one of claims 1 to 6, wherein

The counter ion of the anionic surfactant is one or more selected from the group consisting of alkali metal ions, alkaline earth metal ions, ammonium ions and alkanolammonium ions.

15. The liquid cleanser composition of claim 14, wherein:

The alkali metal ions are one or two selected from sodium ions and potassium ions.

16. The liquid detergent composition according to any one of claims 1 to 6, wherein the component (b) is selected from the group consisting of hexyldimethylamine oxide, octyldimethylamine oxide, and decyldimethylamine An amine oxide type surfactant of one or more of amine oxide and dodecyl dimethyl amine oxide.

17. The liquid detergent composition according to any one of claims 1 to 6, wherein the component (b) is selected from the group consisting of octyldimethylamine oxide, decyldimethylamine oxide, and dodecyl One or two or more amine oxide type surfactants in dimethyl amine oxide.

18. The liquid cleanser composition according to any one of claims 4 to 6, wherein

(c)/(a) is 7 or less as mass ratio of content of (c) component and content of (a) component.

19. The liquid cleanser composition according to any one of claims 4 to 6, wherein

(c)/(a) is 4.4 or less as mass ratio of content of (c) component and content of (a) component.

20. The liquid cleanser composition according to any one of claims 4 to 6, wherein

(c)/(a) is 2.3 or less as mass ratio of content of (c) component and content of (a) component.

21. The liquid cleanser composition according to any one of claims 4 to 6, wherein

(c)/(b) is 10 or less as mass ratio of content of (c) component and content of (b) component.

22. The liquid cleanser composition according to any one of claims 4 to 6, wherein

(c)/(b) is 6 or less as mass ratio of content of (c) component and content of (b) component.

23. The liquid cleanser composition according to any one of claims 4 to 6, wherein

(c)/(b) is 2.7 or less as mass ratio of content of (c) component and content of (b) component.

24. The liquid cleanser composition according to any one of claims 1 to 6, wherein

(a)+(b) is 2-30 mass % as total content of (a) component and (b) component.

25. The liquid cleanser composition according to any one of claims 1 to 6, wherein

(a)+(b) is 2-25 mass % as total content of (a) component and (b) component.

26. The liquid cleanser composition according to any one of claims 1 to 12, wherein

The total content of surfactants other than fatty acids is 2 to 40% by mass.

27. The liquid cleaning composition according to any one of claims 1 to 6, which has a pH value of 7 or less at 25°C.

28. The liquid cleaning composition according to any one of claims 1 to 6, which has a pH value of 6 or less at 25°C.

29. The liquid detergent composition according to any one of claims 1 to 6, which has a pH value of 5 or less at 25°C.

The liquid cleaning composition of any one of Claims 1-6 whose content of (a) component is 1-20 mass %.

The liquid cleaning composition of any one of Claims 1-6 whose content of (b)component is 0.3-5 mass %.

32. The liquid cleaning composition according to any one of claims 4 to 6, wherein the content of the component (c) is 0.3 mass % or more and 16 mass % or less.

33. The liquid detergent composition according to any one of claims 1 to 6, which contains or does not contain an inorganic builder, and the content of the inorganic builder is 50% by mass or less.

34. A method of washing, wherein,

The liquid detergent composition of any one of claims 1 to 33 is applied to fibrous products for washing.

35. A washing method wherein,

The liquid detergent composition of any one of claims 1 to 33 is applied to laundry for washing.