Alkaline detergent composition for oil stains

Abstract

To provide an alkaline detergent composition for oil stains that exhibits excellent cleaning effects even on heat-degraded oil stains and also demonstrates effective sterilization performance.SOLUTION: An alkaline detergent composition for oil stains contains: an alkali agent as a component (A); at least one or more selected from alcoholic solvents, glycol solvents, and glycol ether solvents or a combination of them as a component (B); an alkyl dimethyl amino acetic acid betaine with a C10-18 alkyl group as a component (C); a cationic surfactant as a component (D); a chelator as a component (E); and water as a component (F).SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to an alkaline detergent composition that exhibits an excellent cleaning effect on oily stains, and more specifically, to an alkaline detergent composition that exhibits an extremely excellent cleaning effect not only on unheated oily stains but also on heat-denatured oily stains, and also exhibits good disinfecting properties. [Background technology]

[0002] Detergents used to clean hard surfaces such as floors, walls, and cooking utensils in food and beverage manufacturing plants and kitchens are required to have high cleaning properties against oil stains in order to keep the manufacturing environment hygienic and to prevent foreign matter from entering and cross-contamination through manufacturing equipment, etc. Furthermore, detergents used in food and beverage manufacturing plants are also required to have disinfecting properties against food poisoning bacteria and other pathogens.

[0003] Conventional alkaline detergent compositions for oil stains include a liquid detergent composition that contains an alkaline component as an active ingredient and further contains an amine oxide and an alkyl polyglucoside in a specified range (Patent Document 1), and an alkaline detergent composition that contains sodium hydroxide and / or potassium hydroxide, benzenesulfonic acid or a salt thereof, an anionic surfactant, a nonionic surfactant, and a glycol ether-based solvent (Patent Document 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2013-170192 A [Patent Document 2] Patent Publication No. 2022-126625 Summary of the Invention [Problem to be solved by the invention]

[0005] In beverage and food manufacturing and processing plants, edible oil itself or materials with a high content of edible oil may be heated and denatured, and may remain as heat-denatured oil stains on floors, walls, cooking utensils, etc. It is not easy to clean such heat-denatured oil stains with a high cleaning rate (stain removal rate) compared to cleaning oil stains before heat denaturation. In Patent Documents 1 and 2, samples containing 30% oil are used, which are heat-denatured and then washed to visually confirm the cleaning rate. However, in order to strictly prevent the inclusion of foreign matter or cross-contamination when switching production lines, etc., a higher cleaning ability against heat-denatured oil stains is required.

[0006] Furthermore, cleaning agents used in beverage and food manufacturing and processing plants are not required to have a specific ability to clean oil stains, but are also required to have excellent antibacterial properties. However, Patent Documents 1 and 2 do not consider antibacterial properties at all.

[0007] The present invention has been made in consideration of the above-mentioned problems of the conventional technology, and has an object to provide an alkaline detergent composition for oil stains which exhibits an extremely excellent cleaning effect even on heat-denatured oil stains and has good disinfecting properties. [Means for solving the problem]

[0008] The alkaline detergent composition for oil stains of the present invention is characterized by comprising an alkaline agent as component (A), at least one solvent or a combination of two or more solvents selected from alcohol-based solvents, glycol-based solvents, and glycol ether-based solvents as component (B), an alkyldimethylaminoacetic acid betaine having an alkyl group having 10 to 18 carbon atoms as component (C), a cationic surfactant as component (D), a chelating agent as component (E), and water as component (F). Effect of the Invention

[0009] The alkaline detergent composition for oil stains of the present invention having the above-mentioned configuration can provide an alkaline detergent composition for oil stains that exhibits an extremely excellent cleaning effect even on heat-denatured oil stains and has good disinfecting properties. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] To solve the above problems, the inventors conducted intensive research and found that a cleaning composition containing an alkaline agent as component (A), at least one or a combination of two or more solvents selected from alcohol-based solvents, glycol-based solvents, and glycol ether-based solvents as component (B), an alkyldimethylaminoacetic acid betaine having an alkyl group having 10 to 18 carbon atoms as component (C), a cationic surfactant as component (D), a chelating agent as component (E), and water as component (F) can solve the above-mentioned problems, and have thus completed the present invention.

[0011] The alkaline detergent composition for oily stains of the present invention having the above-mentioned constitution can exhibit an extremely excellent cleaning power not only on oily stains before they are denatured by heat but also on denatured oily stains, and also has excellent disinfecting properties. The alkaline detergent composition for oil stains of the present invention, which has the above-mentioned excellent effects, can also show a suitable foam retention. The foam retention here means the foam retention confirmed by the state of foaming when the detergent composition or a diluted solution thereof is soaked into a sponge or the like and lightly rubbed with hands to generate foam, then washed and rubbed with hands again.

[0012] The alkaline detergent composition for oil stains of the present invention (hereinafter, sometimes simply referred to as the detergent composition of the present invention) will be described in more detail below. In the following description, preferred numerical ranges of the present invention may be shown as appropriate. In this case, the preferred ranges, more preferred ranges, and particularly preferred ranges regarding the upper and lower limits of the numerical ranges can be determined from all combinations of the upper and lower limits.

[0013] (A) Component: The component (A) in the cleaning composition of the present invention is an alkali agent. Specifically, the component (A) may be an alkali metal hydroxide such as sodium hydroxide or potassium hydroxide, an alkanolamine such as monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, triisopropanolamine, N-methylethanolamine, or N-methyldiethanolamine, an alkali metal silicate such as sodium orthosilicate, sodium metasilicate, sodium silicate No. 1, sodium silicate No. 2, sodium silicate No. 3, sodium silicate No. 4, potassium silicate No. 1, or potassium silicate No. 2, or an alkali metal carbonate such as sodium carbonate, potassium carbonate, sodium hydrogen carbonate, or potassium hydrogen carbonate, or the like. Among these, potassium hydroxide, sodium silicate, potassium silicate, monoethanolamine, triethanolamine, or monoisopropanolamine is preferred. The specific compositions of the component (A) described above may be used alone or in combination of two or more.

[0014] Among the above, from the viewpoints of cleaning properties and storage stability, it is more preferable that component (A) contains at least one of sodium hydroxide or potassium hydroxide, and it is even more preferable that component (A) is sodium hydroxide and / or potassium hydroxide.

[0015] In the cleaning composition of the present invention (100% by mass), the (A) component is contained in an amount of preferably 0.1% by mass or more and 20% by mass or less, more preferably 0.5% by mass or more and 15% by mass or less, and even more preferably 1% by mass or more and 10% by mass or less. If the content of component (A) is less than 0.1% by mass, the cleaning properties may decrease, whereas if it exceeds 20% by mass, the storage stability may become insufficient.

[0016] (B) Ingredients: The component (B) in the cleaning composition of the present invention may be at least one solvent selected from the group consisting of alcohol-based solvents, glycol-based solvents, and glycol ether-based solvents, or a combination of two or more solvents. Examples of alcohol-based solvents include methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, 2-methoxyethanol, 2-ethoxyethanol, 2-ethylhexanol, 3-methoxy-3-methyl-1-butanol, benzyl alcohol, and phenoxyethanol. Examples of glycol solvents include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, isoprene glycol, 1,2-butylene glycol, 1,3-butylene glycol, 1,2-pentylene glycol, and hexylene glycol. The glycol ether solvent is preferably ethylene glycol or propylene glycol. Compounds obtained by a condensation reaction of ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monohexyl ether, ethylene glycol monophenyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, diethylene glycol monobenzyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, triethylene glycol monopropyl ether, triethylene glycol monobutyl ether, triethylene glycol monohexyl ether, triethylene glycol monophenyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monobutyl ether, ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, diethylene glycol methyl ethyl ether, propylene glycol methyl ethyl ether, and dipropylene glycol methyl ethyl ether. Among these, 3-methoxy-3-methyl-1-butanol, propylene glycol, hexylene glycol, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, and triethylene glycol monobutyl ether are preferred. The specific compositions of the component (B) described above may be used alone or in combination of two or more.

[0017] Among the above, from the viewpoint of cleaning properties and storage stability, it is more preferable that component (B) contains at least one selected from 3-methoxy-3-methyl-1-butanol, hexylene glycol, and diethylene glycol monobutyl ether, and it is even more preferable that component (B) is at least one or a combination of two or more selected from 3-methoxy-3-methyl-1-butanol, hexylene glycol, and diethylene glycol monobutyl ether.

[0018] In the cleaning composition of the present invention (100% by mass), the (B) component is preferably contained in an amount of 0.1% by mass or more and 30% by mass or less, more preferably 0.5% by mass or more and 20% by mass or less, and even more preferably 1% by mass or more and 15% by mass or less. If the content of component (B) is less than 0.1% by mass, the cleaning properties and storage stability may decrease, and if it exceeds 30% by mass, the storage stability may become insufficient. From the viewpoint of achieving better cleaning properties, the content of component (B) is preferably 1% by mass or more.

[0019] (C) Ingredients: The component (C) in the cleaning composition of the present invention is an alkyldimethylaminoacetic acid betaine having an alkyl group with 10 to 18 carbon atoms. The alkyl group refers to an alkyl group bonded to dimethylaminoacetic acid betaine. Specifically, the component (C) contains at least tetradecyldimethylaminoacetic acid betaine, and may further contain one or more of decyldimethylaminoacetic acid betaine, dodecyldimethylaminoacetic acid betaine, hexadecyldimethylaminoacetic acid betaine, octadecyldimethylaminoacetic acid betaine, coconut oil, and the like. Tetradecyldimethylaminoacetic acid betaine contained as component (C) contributes to improved cleaning performance against oily stains and improved foam retention.

[0020] In the cleaning composition of the present invention, the proportion of tetradecyldimethylaminoacetic acid betaine in component (C) is not particularly limited, but from the viewpoint of improving cleaning performance, it is preferably 50 mass % or more, and from the viewpoint of exhibiting even higher cleaning performance, it is more preferably 60 mass % or more, and even more preferably 70 mass % or more. In the cleaning composition of the present invention, the proportion of tetradecyldimethylaminoacetic acid betaine in component (C) includes not only the amount of tetradecyldimethylaminoacetic acid betaine alone, but also the amount of tetradecyldimethylaminoacetic acid betaine contained in a composite material such as coconut oil.

[0021] In the cleaning composition of the present invention (100% by mass), the (C) component is preferably contained in an amount of 0.1% by mass or more and 12% by mass or less, more preferably 0.5% by mass or more and 10% by mass or less, and from the viewpoint of particularly excellent cleaning properties against oily stains and good storage stability, it is even more preferably contained in an amount of 1% by mass or more and 8% by mass or less. If the content of component (C) is less than 0.1% by mass, the cleaning properties may decrease, whereas if it exceeds 12% by mass, the storage stability may become insufficient.

[0022] (D) Ingredients: The component (D) in the cleaning composition of the present invention is a cationic surfactant. Specific examples of the component (D) include quaternary ammonium salts, guanidine cationic surfactants, hexadecyltributylphosphonium, alkyldiamines or their salts, etc. Specific preferred examples of the component (D) include quaternary ammonium salts such as alkyltrimethylammonium salts, dialkyldimethylammonium salts, alkyldimethylbenzylammonium salts, alkyldimethylhydroxyethylammonium salts, and dialkylmethylpolyoxyammonium salts. Examples of the alkyl group in the above examples include alkyl groups having 4 to 22 carbon atoms, and preferably straight-chain alkyl groups having 6 to 18 carbon atoms. Specifically, examples of the alkyl group include a butyl group, a hexyl group, an octyl group, a decyl group, a dodecyl group, a tetradecyl group, a hexadecyl group, a heptadecyl group, an octadecyl group, an eicosyl group, and a docosyl group, and more preferably an octyl group, a decyl group, a dodecyl group, a tetradecyl group, a hexadecyl group, and an octadecyl group. Furthermore, preferred salts of component (D) include chloride ions, bromide ions, alkyl sulfate ester ions having 1 or 2 carbon atoms, fatty acid ions having 1 to 12 carbon atoms, and benzenesulfonate ions which may be substituted with 1 to 3 alkyl groups having 1 to 3 carbon atoms. The specific compositions of the component (D) described above may be used alone or in combination of two or more kinds.

[0023] From the viewpoint of exerting a more excellent disinfecting effect, it is preferable that the component (D) contains at least one selected from alkyl dimethyl hydroxyethyl ammonium salts, dialkyl dimethyl ammonium salts, and alkyl dimethyl benzyl ammonium salts, and it is more preferable that the component (D) is at least one or a combination of two or more selected from alkyl dimethyl hydroxyethyl ammonium salts, dialkyl dimethyl ammonium salts, and alkyl dimethyl benzyl ammonium salts.

[0024] In the cleaning composition of the present invention (100% by mass), the (D) component is preferably contained in an amount of 0.01% by mass or more and 7% by mass or less, more preferably 0.01% by mass or more and 5% by mass or less, and even more preferably 0.03% by mass or more and 4% by mass or less. If the content of component (D) is less than 0.01% by mass, the disinfecting properties may be insufficient, whereas if it exceeds 7% by mass, the storage stability may be insufficient.

[0025] (E) Ingredients: The component (E) in the cleaning composition of the present invention is a chelating agent. Specific examples of the component (E) include nitrilotriacetic acid or a salt thereof, ethylenediaminetetraacetic acid or a salt thereof, hydroxyethylenediaminetriacetic acid or a salt thereof, diethylenetriaminopentaacetic acid or a salt thereof, triethylenetetraaminehexaacetic acid or a salt thereof, hydroxyethyliminodiacetic acid or a salt thereof, dihydroxyethylglycine or a salt thereof, methylglycinediacetic acid or a salt thereof, glutamic acid diacetic acid or a salt thereof, aspartic acid diacetic acid or a salt thereof, β-alaninediacetic acid or a salt thereof, and the like, among which hydroxyethylenediaminetriacetic acid or a salt thereof, diethylenetriaminepentaacetic acid or a salt thereof, ethylenediaminetetraacetic acid or a salt thereof, glutamic acid diacetic acid or a salt thereof, methylglycinediacetic acid or a salt thereof, and the like are preferred. Examples of salts of the above component (E) include sodium salts, potassium salts, and ammonium salts. The specific compositions of the component (E) described above may be used alone or in combination of two or more kinds.

[0026] From the viewpoint of exhibiting good disinfecting properties as well as good cleaning properties against oily stains, it is preferable that component (E) contains at least one selected from ethylenediaminetetraacetic acid or a salt thereof, glutamic acid diacetic acid or a salt thereof, and methylglycine diacetic acid or a salt thereof, and it is more preferable that component (E) is at least one or a combination of two or more selected from ethylenediaminetetraacetic acid or a salt thereof, glutamic acid diacetic acid or a salt thereof, and methylglycine diacetic acid or a salt thereof.

[0027] In the cleaning composition of the present invention (100% by mass), the (E) component is preferably contained in an amount of 0.1% by mass or more and 10% by mass or less, more preferably 0.5% by mass or more and 8% by mass or less, and even more preferably 0.5% by mass or more and 5% by mass or less. If the content of the component (E) is less than 0.1% by mass, the disinfecting properties may be insufficient, whereas if it exceeds 10% by mass, the storage stability may be insufficient.

[0028] (F) Ingredients: The component (F) in the cleaning composition of the present invention is water. The water of the component (F) is not particularly limited, and examples thereof include tap water, industrial water, reclaimed water, ion-exchanged water, RO water, distilled water, soft water, and the like. These may be used alone or in combination of two or more. Examples of tap water include tap water from Arakawa Ward, Tokyo (pH=7.6, total alkalinity (calcium carbonate equivalent) 40.5 mg / L, German hardness 2.3° DH (including calcium hardness 1.7° DH and magnesium hardness 0.6° DH), chloride ions 21.9 mg / L, sodium and its compounds 15 mg / L, nitrate nitrogen and nitrite nitrogen 1.2 mg / L, fluorine and its compounds 0.1 mg / L, boron and its compounds 0.04 mg / L, total trihalomethanes 0.016 mg / L, residual chlorine 0.4 mg / L, organic matter (total organic carbon) 0.7 mg / L). Water is blended so that the total amount of the foaming cleaner composition becomes 100% by mass.

[0029] In the cleaning composition of the present invention, the pH of the composition at 25°C is preferably 9 or more and 14 or less, more preferably 9.5 or more and 14 or less, and even more preferably 10 or more and 13.8 or less. By making the pH into the alkaline region within the above-mentioned range, a cleaning composition having excellent cleaning properties against oily stains can be provided. For the method of measuring the pH of the cleaning composition, see the description in the Examples below.

[0030] (G) Ingredients: The cleaning composition of the present invention preferably further contains, as component (G), a straight-chain fatty acid or a salt thereof having a total carbon number of 12 or more and 20 or less, or a branched fatty acid and / or a salt thereof having a total carbon number of 12 or more and 20 or less, and more preferably a straight-chain fatty acid and / or a salt thereof having a total carbon number of 12 or more and 20 or less. More specific examples of the above component (G) include lauric acid or a salt thereof, myristic acid or a salt thereof, palmitic acid or a salt thereof, and stearic acid or a salt thereof, and among these, it is more preferable that lauric acid or a salt thereof is included as component (G). Examples of salts of the above component (G) include potassium salts, sodium salts, and ammonium salts. The specific compositions of the component (G) described above may be used alone or in combination of two or more types.

[0031] Here, regarding foaming in a cleaning agent, it has been conventionally generally evaluated from the viewpoint of foam retention, which is the retention of foam on the surface to be cleaned for a long time. This is because the retention of foam on the surface to be cleaned for a long time can improve cleaning properties and disinfecting properties. However, on the other hand, some compositions can show good cleaning properties even if they do not foam well. As a result of thorough consideration by the present inventors of the actual use of detergent compositions, it was found that users of the detergent compositions (i.e., cleaners) tend to soak a sponge with the detergent or a diluted solution thereof, perform cleaning work, and when foaming is no longer sufficient, they judge that the cleaning performance has decreased and add more detergent or a diluted solution thereof to the sponge. From the viewpoints of economy and environmental issues, it is preferable that in a detergent that shows excellent cleaning performance regardless of foaming, consideration is given not to use more than the necessary amount of the detergent even if the cleaning performance is sufficient.

[0032] The cleaning composition of the present invention exhibits excellent cleaning properties and disinfecting properties as well as appropriate foam retention even when it does not contain the component (G). However, by containing the component (G), the cleaning composition tends to have even better foam retention while maintaining the excellent cleaning properties and disinfecting properties.

[0033] From the viewpoint of exhibiting excellent foam retention, the (G) component is contained in an amount of preferably 0.01% by mass or more and 8% by mass or less, more preferably 0.1% by mass or more and 6% by mass or less, and even more preferably 0.5% by mass or more and 5% by mass or less, based on 100% by mass of the cleaning agent composition of the present invention. If the content of the component (G) is less than 0.01% by mass, improvement in foam retention may not be achieved, whereas if it exceeds 8% by mass, storage stability may become insufficient.

[0034] The above-mentioned cleaning composition of the present invention is not particularly limited in terms of the place of use or the object to be cleaned, but from the viewpoint of excellent cleaning properties against oil stains and excellent sterilizing properties, it is suitable for use in beverage and food manufacturing and processing plants, etc., and is also suitable for use for cleaning hard surfaces. Examples of hard surfaces in beverage and food manufacturing and processing plants include floors, walls, cooking utensils, etc.

[0035] The liquid detergent composition of the present invention may be optionally modified with any of the above-mentioned compounds as long as the effect of the present invention is not impaired. The composition may contain other ingredients commonly used in the art, such as, for example, Examples of such surfactants include nonionic surfactants, amphoteric surfactants other than component (B), bactericides, oxidizing agents, solubilizing agents, thickening agents, fragrances, and colorants.

[0036] Examples of nonionic surfactants include polyoxyalkylene alkyl ethers, polyoxyalkylene dialkyl ethers, polyoxyalkylene alkyl esters, polyoxyalkylene alkyl diesters, polyoxyalkylene aryl ethers, glycerin fatty acid esters or their alkylene oxide adducts, polyglycerin fatty acid esters, sorbitan fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene sorbitol fatty acid esters, polyoxyalkylene glycol fatty acid esters, polyoxyethylene polyoxypropylene alkyl ethers, polyoxyethylene polyoxypropylene alkenyl ethers, random or block adducts of ethylene oxide and propylene oxide, polyoxyalkylene castor oil, polyoxyalkylene hydrogenated castor oil, polyoxyalkylene alkylamines, dipolyoxyalkylene alkylamines, higher fatty acid alkanolamides, polyoxyethylene fatty acid alkanolamides, and alkyl glucosides.

[0037] Examples of amphoteric surfactants other than component (B) include alkylamidopropyl betaine, sulfobetaine, alkylamino (mono- or di-)propionate, imidazolinium betaine, alkylamine oxide, alkylaminoethyl glycine, alkyldi(aminoethyl)glycine, glycine n-(3-aminopropyl) C10-16 derivative, alkylpolyaminoethylglycine, alkyl β-alanine, alkyldiethanolamine, polyoxyalkylene alkylamine, and oxyethylene addition type surfactants of diamine.

[0038] Examples of the bactericide include isothiazolines such as 5-chloro-2-methyl-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, isothiazolin-3-one, 1,2-benzisothiazolin-3-one, and Nn-butyl-benzisothiazolin-3-one; hydantoins such as 1,3-dimethylol-5,5-dimethylhydantoin, 1 or 3-monomethylol-5,5-dimethylhydantoin, dimethylhydantoin, 1,3-dichloro-5,5-dimethylhydantoin, and 1,3-dichloroethylmethylhydantoin; iodo-2-propynyl butylcarbamate, isopropylmethylphenol, hexachlorophene, Irgasan, and triclosan.

[0039] Examples of the oxidizing agent include hypochlorites such as sodium hypochlorite and potassium hypochlorite, chlorites such as sodium chlorite and potassium chlorite, chlorates such as sodium chlorate and potassium chlorate, perchlorates such as sodium perchlorate and potassium perchlorate, chlorinated isocyanurates such as chlorinated sodium isocyanurate and potassium chlorinated isocyanurate, chlorine dioxide, and hydrogen peroxide.

[0040] Examples of the solubilizing agent include xylene sulfonic acid, toluene sulfonic acid, and cumene sulfonic acid. Aromatic sulfonic acids such as benzenesulfonic acid, substituted or unsubstituted naphthalenesulfonic acid, etc. Examples of the acid include phosphate and its salts.

[0041] Examples of the thickening agent include carboxyvinyl polymer, carboxymethyl cellulose, and alkali neutral salts of polymeric polycarboxylic acids such as polyacrylic acid.

[0042] Examples of the flavoring include natural flavorings, synthetic flavorings, and blends thereof. Examples of the coloring include natural colorings, synthetic colorings, and mixtures thereof. EXAMPLES

[0043] The present invention will be described in detail below with reference to examples and comparative examples. Tables 1 to 8 show the components and their amounts used in the alkaline detergent compositions of the examples and comparative examples. The numerical values ​​relating to the amounts shown in Tables 1 to 8 indicate the ratio (mass%) of the pure content of each component to the detergent composition. Regarding the notation of the alkyl group, for example, alkyl(C8-18) indicates a mixture having an alkyl group having 8 to 18 carbon atoms. The amount of component (G) in the tables is the value calculated from the amount of fatty acid salt contained as component (G) converted into fatty acid. The compositions (compounds) used in the examples and comparative examples are shown below.

[0044] Component (A) A-1: Sodium hydroxide A-2: Potassium hydroxide

[0045] (B) Component B-1: 3-Methoxy-3-methyl-1-butanol B-2: Hexylene glycol B-3: Diethylene glycol monobutyl ether

[0046] (C) Component C-1: Tetradecyldimethylaminoacetic acid betaine (Recabion A-200, manufactured by New Japan Chemical Co., Ltd.) C-2: Dodecyldimethylaminoacetic acid betaine (manufactured by New Japan Chemical Co., Ltd., Recabion A-100) C-3: Octadecyldimethylaminoacetate betaine (Recabion A-700, manufactured by New Japan Chemical Co., Ltd.) C-4: Coconut oil alkyl dimethyl amino acetic acid betaine (manufactured by Toho Chemical Industry Co., Ltd., Obazoline BC; the content of tetradecyl dimethyl amino acetic acid betaine in 100% by mass of the active ingredient of Obazoline BC is approximately 20% by mass).

[0047] (D) Component D-1: Alkyl (C12-C14) dimethyl hydroxyethyl ammonium chloride D-2: Octyldecyl dimethyl ammonium chloride D-3: Alkyl (C8-18) dimethylbenzylammonium chloride

[0048] (Component (E)) E-1: Sodium ethylenediaminetetraacetate E-2: Tetrasodium glutamate diacetate E-3: Trisodium methylglycine diacetate

[0049] (Component (F)) F-1: Ion-exchanged water

[0050] (Component (G)) G-1: Lauric acid G-2: Myristic acid G-3: Palmitic acid G-4: Stearic acid

[0051] (Component (H)) H-1: Green No. 201 H-2: Alkali Blue 2B (manufactured by Take-Tombo Co., Ltd. / Kiseki Kasei Co., Ltd.) H-3: Red No. 102

[0052] ※1: Method for measuring pH <Calibration of pH meter> A combined electrode for pH measurement (manufactured by Horiba, Ltd.; Standard ToupH Electrode 9615S-10D) was connected to a pH meter (manufactured by Horiba, Ltd.; pH / Ion Meter F-72), and the power was turned on. A saturated potassium chloride aqueous solution (3.33 mol / L) was used as the internal solution of the pH electrode. Next, 100 mL beakers were filled with a pH 4.01 standard solution (phthalate standard solution), a pH 6.86 standard solution (neutral phosphate standard solution), and a pH 9.18 standard solution (borate standard solution), respectively, and immersed in a constant temperature bath at 25°C for 30 minutes. The pH measurement electrode was immersed in the temperature-adjusted standard solution for 3 minutes, and calibration operations were performed in the order of pH 6.86, pH 9.18, and pH 4.01. <pH measurement> Each alkaline detergent composition for oil stains was diluted to 5% by mass with ion-exchanged water, and a pH measurement electrode was immersed in 100 mL of each diluted alkaline detergent composition for oil stains that had been kept at a constant temperature of 25°C in a thermostatic chamber for 3 minutes to measure the pH.

[0053] *2: Cleaning test (unheated oil and grease stains) <Test Method> A stainless steel piece [stainless steel (SUS304), length 70 mm x width 60 mm x thickness 1 mm] was coated with model dirt (prepared by uniformly dissolving 20 g of fat obtained by mixing beef tallow and soybean oil in a volume ratio of 1:1, 0.25 g of monooleic acid glycerin ester, and 0.1 g of red oleic acid in 60 mL of chloroform) and dried at 25 ° C for 2 hours to prepare a test piece. The weight (W1) of the stainless steel piece before the model dirt was applied and the weight (W2) of the stainless steel piece after the model dirt was applied were measured. The test piece after the model dirt was applied was immersed for 5 minutes in 200 mL of diluted cleaning solution prepared by diluting each alkaline detergent composition for oil stains to 10 mass % with hard water of 75 mg / L [German hardness 4.2 ° DH] in terms of calcium carbonate. Thereafter, it was rinsed with ion-exchanged water, naturally dried, and the weight (W3) of the test piece was measured. The cleaning rate of the model stain was calculated from the weight change of the test piece before and after cleaning using the following formula (1), and was evaluated according to the following criteria. [Number 1] Cleaning rate (%) = [(W2-W1)-(W3-W1)] ÷ (W2-W1) × 100 <Evaluation criteria> ◎: Cleaning rate 80% or more ○: Cleaning rate is 60% or more, but less than 80% △: Cleaning rate is 40% or more, but less than 60% ×: Cleaning rate less than 40% In the above evaluation, Δ, ◯, and ⊚ were judged as being practical.

[0054] *3: Cleaning test (heat-denatured oil and fat stains) <Test Method> A model stain (20 g of fat obtained by mixing beef tallow and soybean oil in a volume ratio of 1:1, 0.25 g of monooleic acid glycerin ester, and 0.1 g of red oleate were uniformly dissolved in 60 mL of chloroform) was applied to a stainless steel plate [stainless steel (SUS304), length 70 mm × width 60 mm × thickness 1 mm], and baked in an oven at 230 ° C. for 90 minutes. The weight (W1) of the stainless steel piece before the model stain was applied and the weight (W2) of the stainless steel piece after the model stain was applied were measured. The test piece after the model stain was applied was immersed in 200 mL of each alkaline detergent composition for oil stains (undiluted solution) for 5 minutes, rinsed with ion-exchanged water, naturally dried, and then the weight (W3) of the test piece was measured. The cleaning rate of the model stain was calculated from the following formula (1) regarding the weight change of the test piece before and after cleaning, and evaluated according to the following evaluation criteria. [Number 1] Cleaning rate (%) = [(W2-W1)-(W3-W1)] ÷ (W2-W1) × 100 <Evaluation criteria> ◎: Cleaning rate 80% or more ○: Cleaning rate is 60% or more, but less than 80% △: Cleaning rate is 40% or more, but less than 60% ×: Cleaning rate less than 40% In the above evaluation, Δ, ◯, and ⊚ were judged as being practical.

[0055] *4: Foam retention test <Test Method> A dishwashing sponge (11.5cm x 7.5cm x 3.0cm) was soaked in 10g of each alkaline detergent composition for oil stains, diluted to 10% by mass with hard water of 75mg / L (German hardness 4.2°DH) in terms of calcium carbonate, and rubbed by hand 30 times to create a lather. Then, 0.5g of commercially available salad oil was added to the dishwashing sponge as a stain, and the sponge was rubbed 30 times to create a lather, and the lather persistence (lather retention) was evaluated based on the state of lathering. <Evaluation criteria> ◎: Abundant foam is produced even after dirt is added ○: Foam still appears after dirt is added △: Some foaming occurs even after dirt is added ×: Almost no foam is produced when dirt is added The items were judged as practical with △, ○, and ◎.

[0056] *5: Bacteria sterilization test (E. coli) <Test bacteria> The test bacteria used was Escherichia coli (NBRC3972). The test bacteria was smeared on SCD agar medium (manufactured by Eiken Chemical Co., Ltd.) and cultured at 37°C for 24 hours, after which colonies were scraped off and diluted in sterilized phosphate-buffered saline to be used as a bacterial suspension. <Test Method> Each alkaline detergent composition for oil stains was diluted to 10% by mass with hard water of 75 mg / L (German hardness 4.2° DH) in terms of calcium carbonate, and the final concentration was 10 7 ~10 8 0.1 mL of each bacterial suspension was added so that the concentration was cfu / mL, and the mixture was mixed well to form a mixture, which was then allowed to come into contact for 3 and 5 minutes. Next, 0.1 mL of the mixture was added to 10 mL of SCDLP liquid medium (manufactured by Eiken Chemical Co., Ltd.), mixed well, and cultured at 37°C for 48 hours, after which it was evaluated according to the following criteria. The presence or absence of turbidity in the medium was judged visually. <Evaluation criteria> ○: The medium was not turbid after both 3 and 5 minutes of contact. △: The medium becomes cloudy after 3 minutes of contact, but does not become cloudy after 5 minutes of contact. ×: The medium was turbid after both 3 and 5 minutes of contact. In the above evaluation, Δ and ◯ were judged as being practical.

[0057] *6: Storage stability test <Test Method> 200 ml of each detergent composition was placed in a 250 ml transparent polypropylene container, which was then capped and stored and allowed to stand in a thermostatic chamber at −5° C., 25° C. or 40° C. After one month, the appearance of the container was observed and evaluated according to the following criteria. <Evaluation criteria> ◯: No precipitate or turbidity was observed and the product was stable. △: Some precipitate or turbidity is observed. ×: Precipitation or turbidity is significantly observed. In the above evaluation, Δ and ◯ were judged as being practical.

[0058] [Table 1]

[0059] [Table 2]

[0060] [Table 3]

[0061] [Table 4]

[0062] [Table 5]

[0063] [Table 6]

[0064] [Table 7]

[0065] [Table 8]

[0066] The above embodiment encompasses the following technical ideas. (1) (A) an alkaline agent as component; (B) as a component, at least one or a combination of two or more selected from alcohol-based solvents, glycol-based solvents, and glycol ether solvents; (C) an alkyldimethylaminoacetic acid betaine having an alkyl group carbon number of 10 or more and 18 or less as a component; (D) a cationic surfactant as a component; (E) a chelating agent as a component; (F) Water as component An alkaline cleaning agent composition for oil stains comprising: (2) The alkaline detergent composition for oil stains according to the above (1), which contains at least one of sodium hydroxide and potassium hydroxide as component (A). (3) The alkaline detergent composition for oil stains according to (1) or (2) above, characterized in that it contains 1 to 8 mass % of tetradecyldimethylaminoacetic acid betaine as the component (C). (4) The alkaline detergent composition for oil stains according to any one of (1) to (3) above, characterized in that the proportion of tetradecyldimethylaminoacetic acid betaine as component (C) is 50 mass% or more. (5) The alkaline detergent composition for oil stains according to any one of (1) to (4) above, which contains, as component (B), at least one selected from 3-methoxy-3-methyl-1-butanol, hexylene glycol, and diethylene glycol monobutyl ether. (6) The alkaline detergent composition for oil stains according to any one of (1) to (5) above, which contains, as component (D), at least one selected from the group consisting of alkyl dimethyl hydroxyethyl ammonium salts, dialkyl dimethyl ammonium salts, and alkyl dimethyl benzyl ammonium salts. (7) The alkaline detergent composition for oil stains according to any one of (1) to (6) above, further comprising, as component (E), at least one member selected from the group consisting of ethylenediaminetetraacetic acid or a salt thereof, glutamic acid diacetic acid or a salt thereof, and methylglycine diacetic acid or a salt thereof. (8) The alkaline detergent composition for oil stains according to any one of (1) to (7) above, further comprising, as component (G), a linear fatty acid and / or a salt thereof having a total carbon number of 12 to 20, or a branched fatty acid and / or a salt thereof having a total carbon number of 12 to 20. (9) The alkaline detergent composition for oil stains according to any one of (1) to (8) above, which is for cleaning hard surfaces.

Claims

1. (A) an alkaline agent as a component; (B) as a component, at least one solvent or a combination of two or more solvents selected from alcohol-based solvents, glycol-based solvents, and glycol ether solvents; (C) an alkyldimethylaminoacetic acid betaine having an alkyl group having 10 to 18 carbon atoms as a component; A cationic surfactant as the component (D), (E) a chelating agent as a component; (F) Water as component An alkaline cleaning agent composition for oil stains comprising:

2. 2. The alkaline detergent composition for removing oily stains according to claim 1, which contains at least one of sodium hydroxide and potassium hydroxide as component (A).

3. 3. The alkaline detergent composition for oil stains according to claim 1, characterized in that the component (C) is 1 to 8 mass % of tetradecyldimethylaminoacetic acid betaine.

4. 3. The alkaline detergent composition for removing oily stains according to claim 1, wherein the proportion of tetradecyldimethylaminoacetic acid betaine as component (C) is 50% by mass or more.

5. 3. The alkaline detergent composition for oil stains according to claim 1, further comprising, as component (B), at least one selected from the group consisting of 3-methoxy-3-methyl-1-butanol, hexylene glycol, and diethylene glycol monobutyl ether.

6. 3. The alkaline detergent composition for removing oily stains according to claim 1, further comprising, as component (D), at least one selected from the group consisting of alkyl dimethyl hydroxyethyl ammonium salts, dialkyl dimethyl ammonium salts, and alkyl dimethyl benzyl ammonium salts.

7. 3. The alkaline detergent composition for removing oily stains according to claim 1, further comprising, as component (E), at least one member selected from the group consisting of ethylenediaminetetraacetic acid or a salt thereof, glutamic acid diacetic acid or a salt thereof, and methylglycine diacetic acid or a salt thereof.

8. 3. The alkaline detergent composition for oil stains according to claim 1 or 2, further comprising, as component (G), a linear fatty acid and / or a salt thereof having a total carbon number of 12 or more and 20 or less, or a branched fatty acid and / or a salt thereof having a total carbon number of 12 or more and 20 or less.

9. 3. The alkaline detergent composition for oil stains according to claim 1, which is for cleaning hard surfaces.

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