JP2023118263A - Detergent composition for non-ferrous metal or the like - Google Patents

Abstract

To provide a detergent composition for non-ferrous metal or the like which can suppress precipitation of a metal soap of an aliphatic carboxylic acid even when dilution water having a high hardness is used without use of a sequestering agent which is a persistent compound, suppressing reduction in antirust effect, and a method for washing the non-ferrous metal or the like using the detergent composition for the non-ferrous metal or the like.SOLUTION: A detergent composition for non-ferrous metal or the like includes: a compound (component A) represented by the following general formula (I) R1-COOM (I) (in the general formula (I), R1 represents an 11-21C linear or branched alkyl or alkenyl group and M represents a cation or a hydrogen atom); a nonionic surfactant (component B) represented by the following general formula (II) R2-O-{(EO)n/(PO)m}-H (II) (in the general formula (II), R2 is a 16-21C alkyl group or a 16-21C alkenyl group, EO is an ethyleneoxy group, PO is propyleneoxy group, n is an average addition mole number of the EO, m is an average addition mole number of the PO, n is the number of 2 to 20, m is the number of 0 to 20, and an addition form of the PO and EO in {} may be either a random sequence or a block sequence); and water (component C).SELECTED DRAWING: None

Description

TECHNICAL FIELD The present invention relates to a cleaning composition for non-ferrous metals and a method for cleaning members using the cleaning composition for non-ferrous metals.

Non-ferrous metals such as aluminum and alloys of such non-ferrous metals (hereinafter, in this specification, non-ferrous metals such as aluminum and alloys of such non-ferrous metals are collectively referred to as "non-ferrous metals, etc.") are processed and used in various fields. Used in industrial products.

The nonferrous metals, etc. are washed with various detergent compositions in order to remove processing oil, processing waste, etc. adhering to the surface of the nonferrous metals, etc. during or after processing. In order to prevent such corrosion, the cleaning composition may contain a rust preventive agent.

There is a technique using an aliphatic carboxylic acid as a corrosion inhibiting component for metal parts and the like. For example, in Patent Document 1, an amine soap of vegetable fatty acids containing at least one of oleic acid and linoleic acid, which has high rust prevention and wastewater treatment (biological treatment) properties, and also has high detergency (degreasing properties), A cleaning agent for metal products comprising a polyoxyethylene-based nonionic surfactant, a glycol ether-based water-soluble organic solvent, a sequestering agent, a dibasic fatty acid amine soap, and water. Compositions are described, examples being detergent compositions containing tall oil fatty acid amine soap, polyethylene glycol paraisooctylphenyl ether, dipropylene glycol monomethyl ether, ethylenediaminetetraacetic acid, dibasic fatty acid amine soap and water. specifically described.

In addition, Patent Document 2 describes a combination of a nonionic surfactant and an aliphatic carboxylic acid, which have high safety and cleaning effects, can impart rust prevention to iron-based metal parts, and do not corrode non-ferrous metal parts. A detergent composition for non-ferrous metals and the like adjusted to pH 5 to 10 using an aromatic carboxylic acid and an organic alkali is described, and examples include polyoxyethylene polyoxypropylene 2-ethylhexyl ether, oleic acid, p - a cleaning composition containing toluic acid, N-methylethanolamine and water is specifically described.

Further, in Patent Document 3, it is disclosed that it contains an amine, a dicarboxylic acid amine salt, a monocarboxylic acid amine salt, a specific nonionic activator, and water, which have excellent detergency and metal corrosion inhibition performance. A metal article cleaning composition is described which features triethanolamine, 1,10-decanedicarboxylic acid triethanolamine salt, oleic acid triethanolamine salt, polyethylene glycol (7). Specifically, a detergent composition containing water and a nonionic surfactant obtained by adding propylene oxide (4.5 mol) to an alkyl (mixed secondary dodecyl and secondary tetradecyl) ether is described.

JP-A-7-268674 JP 2013-213266 A JP 2020-117644 A

From the viewpoint of economy, etc., the cleaning composition is transported or stored in the form of a concentrated liquid or concentrated powder, and diluted to an appropriate concentration with dilution water such as city water or industrial water before use. When the hardness of the diluent water is high, the aliphatic carboxylic acid in the detergent composition forms metallic soap and precipitates, which may result in insufficient antirust effect. In addition, the precipitated metallic soap may affect the operational stability of the cleaning equipment by agglomerating and/or precipitating. Typical hardness components that can be contained in the dilution water include calcium ions and magnesium ions.

In order to solve the above problem, the cleaning composition for metal products described in Patent Document 1 contains a sequestering agent to soften hard water and suppress the metal saponification of aliphatic carboxylic acids. . However, since ethylenediaminetetraacetic acid specifically described in Patent Document 1 is a hard-to-decompose compound, it is desired not to use ethylenediaminetetraacetic acid.

The present invention has been made in view of the above circumstances, and does not use a sequestering agent, which is a hard-to-decompose compound. It is an object of the present invention to provide a detergent composition for non-ferrous metals, etc., which can suppress the deterioration of the antirust effect, and a method for cleaning non-ferrous metals, etc. using the detergent composition for non-ferrous metals, etc.

The present invention
a compound (component A) represented by the following general formula (I),
R ¹ -COOM (I)
(In general formula (I), R ¹ represents a linear or branched alkyl group or alkenyl group having 11 to 21 carbon atoms, and M represents a cation or a hydrogen atom.)
a nonionic surfactant (component B) represented by the following general formula (II), and R ² —O—{(EO)n/(PO)m}—H (II)
(In general formula (II), R ² is an alkyl group having 16 to 21 carbon atoms or an alkenyl group having 16 to 21 carbon atoms, EO is an ethyleneoxy group, PO is a propyleneoxy group, and n is the average addition mole of EO. number, m is the average number of added moles of PO, n is a number of 2 or more and 20 or less, m is a number of 0 or more and 20 or less, and the addition form of PO and EO in { } is random arrangement, block can be any array.)
It is a detergent composition for non-ferrous metals, etc., containing water (component C).

The present invention also provides a method for cleaning a member, comprising a cleaning step of cleaning a member having a non-ferrous metal or the like using the cleaning composition for non-ferrous metal or the like.

According to the present invention, precipitation of metallic soaps of aliphatic carboxylic acids is suppressed even when diluting water having a high hardness is used without using a sequestering agent that is a persistent compound, and the antirust effect is reduced. It is possible to provide a detergent composition for non-ferrous metals, etc., which can suppress the non-ferrous metals, etc., and a method for cleaning non-ferrous metals, etc., using the detergent composition for non-ferrous metals, etc.

<Detergent composition for non-ferrous metals, etc.>
The cleaning composition for non-ferrous metals etc. of this embodiment is
a compound (component A) represented by the following general formula (I),
R ¹ -COOM (I)
(In general formula (I), R ¹ represents a linear or branched alkyl group or alkenyl group having 11 to 21 carbon atoms, and M represents a cation or a hydrogen atom.)
a nonionic surfactant (component B) represented by the following general formula (II), and R ² —O—{(EO)n/(PO)m}—H (II)
(In general formula (II), R ² is an alkyl group having 16 to 21 carbon atoms or an alkenyl group having 16 to 21 carbon atoms, EO is an ethyleneoxy group, PO is a propyleneoxy group, and n is the average addition mole of EO. number, m is the average number of added moles of PO, n is a number of 2 or more and 20 or less, m is a number of 0 or more and 20 or less, and the addition form of PO and EO in { } is random arrangement, block can be any array.)
Contains water (component C). According to the detergent composition for non-ferrous metals etc. of the present embodiment, even when diluting water with high hardness is used without using a sequestering agent which is a hard-to-decompose compound, the metallic soap of an aliphatic carboxylic acid is used. Precipitation can be suppressed, and deterioration of the antirust effect can be suppressed. The reason why the detergent composition for non-ferrous metals, etc. of the present embodiment exhibits such effects is not clear, but it is considered as follows.

Even if the detergent composition for nonferrous metals, etc. of the present embodiment contains a hardness component, and the hardness component forms a metal soap together with the component A, the metal soap is dispersed by the component B, and the metal soap precipitates. can be suppressed. In addition, the component B is present together with the component A on the surface of the non-ferrous metal after cleaning. Since component B has a long-chain alkyl group, it imparts hydrophobicity and can form a stable rust-preventive film without inhibiting the effect of component A, exhibiting a good rust-preventive effect. Therefore, it is presumed that both the stability and the antirust effect can be achieved in the high-hardness cleaning solution.

[Compound represented by formula (I) (component A)]
The cleaning composition for non-ferrous metals etc. of the present embodiment contains the compound represented by the general formula (I) from the viewpoint of suppressing corrosion of non-ferrous metals etc. after cleaning. In addition, in this specification, the compound represented by the said general formula (I) may be called the component A. In the general formula (I), R ¹ is a linear or branched alkyl or alkenyl group having 11 to 21 carbon atoms, preferably an alkyl or alkenyl group having 12 to 18 carbon atoms, more preferably It is an alkyl or alkenyl group having 18 carbon atoms. Examples of component A include saturated fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, arachidic acid, and behenic acid, or salts thereof; palmitoleic acid, oleic acid, elaidic acid, cetoleic acid, and erucic acid. , brassic acid, linoleic acid, linolenic acid, arachidonic acid, stearolic acid and the like, or salts thereof. The component A is preferably one or more selected from the group consisting of lauric acid, myristic acid, linoleic acid, oleic acid, and isostearic acid, or a salt thereof, from the viewpoint of suppressing corrosion of nonferrous metals and the like after washing, More preferably, one or more selected from the group consisting of isostearic acid and oleic acid, or salts thereof.

In the general formula (I), M is preferably an alkali metal ion, an ammonium ion, or a hydrogen atom, more preferably a hydrogen atom.

The content of component A in the detergent composition for non-ferrous metals is preferably 0.005% by mass or more, more preferably 0.01% by mass or more, from the viewpoint of suppressing corrosion of non-ferrous metals after cleaning. It is preferably 0.5% by mass or less, more preferably 0.3% by mass or less, from the viewpoint of economy.

[Compound represented by general formula (II) (component B)]
The detergent composition for non-ferrous metals, etc. of the present embodiment contains the compound represented by the general formula (II) from the viewpoint of suppressing precipitation of the hardness component and the component A metal soap. In addition, in this specification, the compound represented by the general formula (II) may be referred to as component B.

In the general formula (II), R ² has 16 or more carbon atoms, preferably 18 or more, from the viewpoint of suppressing the precipitation of the hardness component and the metal soap of the component A, and from the viewpoint of suppressing the precipitation of the component B, carbon Alkyl groups having a number of 21 or less, preferably 18 or less; It is an alkenyl group having a number of 21 or less, preferably 18 or less. ^R2 may be linear or branched, but is preferably linear. Specific examples of R ² include at least one selected from a cetyl group, a stearyl group, and an oleyl group.

In the general formula (II), n is 2 or more, preferably 3 or more, more preferably 4 or more, from the viewpoint of improving washability and suppressing corrosion of non-ferrous metals such as iron and aluminum after washing, and , 20 or less, preferably 15 or less, more preferably 10 or less, still more preferably 9 or less. In the general formula (II), m is 0 or more and 20 or less, preferably 10 or less, more preferably 5 or less, and still more preferably 1 or less from the same viewpoint. Also, from the viewpoint of improving washability, the value of n is preferably larger than the value of m.

The content of the component B in the detergent composition for non-ferrous metals is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, from the viewpoint of suppressing precipitation of the hardness component and the metallic soap of the component A. is more preferable, and from the viewpoint of suppressing corrosion of non-ferrous metals and the like after washing, it is preferably 0.2% by mass or less, and more preferably 0.1% by mass or less.

The mass ratio of the component B to the component A (the mass of the component B/the mass of the component A) in the detergent composition for non-ferrous metals etc. is determined from the viewpoint of suppressing precipitation of the hardness component and the metal soap of the component A. Therefore, it is preferably 0.1 or more, more preferably 0.2 or more, still more preferably 0.4 or more, and from the viewpoint of suppressing corrosion of non-ferrous metals after washing, preferably 10 or less, more preferably 4 or less, 2 or less is more preferable.

[Water (component C)]
The cleaning composition for nonferrous metals and the like contains water. In addition, in this specification, water may be called the component C. Industrial water, tap water, deionized water, and the like can be used as the component C. Industrial water is preferable from the viewpoint of supply and cost, and ion-exchanged water is preferable from the viewpoint of cleaning performance. The content of the component C in the cleaning composition for non-ferrous metals and the like can be the balance of the component A, the component B, and other components described later. Specifically, the content of Component C is preferably 95% by mass or more, more preferably 98% by mass or more, and 99.95% by mass or less.

[Other ingredients]
The cleaning composition for non-ferrous metals and the like may contain components other than the component A, the component B, and the component C within a range that does not affect the effects of the present invention. Components other than the component A, the component B, and the component C include amines represented by the following general formula (III), pH adjusters such as acids and alkalis, solubilizers, dispersants, thickeners, and the like. Thickening agents, antifoaming agents, preservatives, and coloring agents can be exemplified. Moreover, it is preferable that the detergent composition for nonferrous metals and the like does not contain a sequestering agent such as ethylenediaminetetraacetic acid, which is difficult to decompose.

[Amine Represented by Formula (III) (Component D)]
The cleaning composition for non-ferrous metals and the like further contains an amine represented by the following general formula (III) from the viewpoint of suppressing corrosion of non-ferrous metals and the like after cleaning. In addition, in this specification, the amine represented by the following general formula (III) may be called the component D.

(In general formula (III), R ¹ and R ² are each independently a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a phenyl group, a benzyl group, an aminoethyl group, a hydroxyethyl group, or a hydroxypropyl group; and ^R3 is a hydroxyethyl group or a hydroxypropyl group.)

Examples of component D include alkanolamines such as monoethanolamine, diethanolamine and triethanolamine, and alkylated and aminoalkylated products thereof. Component D includes monoethanolamine, monoisopropanolamine, N-methylmonoethanolamine, N-methylmonoisopropanolamine, N - ethylmonoethanolamine, N-ethylmonoisopropanolamine, N-phenylmonoethanolamine, N-phenylmonoisopropanolamine, N-benzylmonoethanolamine, N-benzylmonoisopropanolamine, diethanolamine, diisopropanolamine, N-dimethyl monoethanolamine, N-dimethylmonoisopropanolamine, N-methyldiethanolamine, N-methyldiisopropanolamine, N-diethylmonoethanolamine, N-diethylmonoisopropanolamine, N-ethyldiethanolamine, N-ethyldiisopropanolamine, N -phenyldiethanolamine, N-phenyldiisopropanolamine, N-benzyldiethanolamine, N-benzyldiisopropanolamine, triethanolamine, N-(β-aminoethyl)monoethanolamine, N-(β-aminoethyl)monoisopropanolamine , N-(β-aminoethyl)diethanolamine, and N-(β-aminoethyl)diisopropanolamine, preferably at least one selected from monoethanolamine, monoisopropanolamine, diethanolamine, N-methylmonoethanolamine, N -At least one selected from dimethylmonoethanolamine, N-ethylmonoethanolamine, triethanolamine and N-(β-aminoethyl)monoethanolamine is more preferred, and selected from monoethanolamine, diethanolamine and triethanolamine. At least one is more preferred.

From the viewpoint of suppressing corrosion of nonferrous metals after cleaning, the content of component D in the detergent composition for nonferrous metals is preferably 0.05% by mass or more, and more preferably 0.1% by mass or more. It is preferably 1.0% by mass or less, more preferably 0.7% by mass or less, from the viewpoint of reducing damage to the object to be washed.

The mass ratio of the component D to the component A (the mass of the component D/the mass of the component A) in the detergent composition for non-ferrous metals etc. is, from the viewpoint of suppressing corrosion of non-ferrous metals etc. after cleaning, It is preferably 0.1 or more, more preferably 0.2 or more, still more preferably 0.4 or more, and from the viewpoint of reducing damage to the object to be washed, it is preferably 10 or less, more preferably 4 or less, and even more preferably 2 or less. .

The pH of the detergent composition for non-ferrous metals is preferably 4 or more, more preferably 6 or more, and still more preferably 8 or more from the viewpoint of reducing damage to the object to be washed, and from the viewpoint of safety such as chemical injuries. , is preferably 10 or less, more preferably 9.5 or less, and even more preferably 9 or less.

[Method for producing cleaning composition for non-ferrous metals, etc.]
The cleaning composition for non-ferrous metals can be produced by blending the above components by a known method. The above-mentioned "blending" includes mixing each of the above components simultaneously or in any order.

[Concentrate of detergent composition for non-ferrous metals, etc.]
The cleaning composition for non-ferrous metals may be prepared as a concentrate by reducing the amount of component E water to the extent that separation, precipitation, etc. do not occur and the storage stability is not impaired. The concentrate of the cleaning composition for non-ferrous metals, etc. is preferably a concentrate with a dilution ratio of 3 times or more from the viewpoint of transportation and storage, and a concentrate with a dilution ratio of 30 times or less from the viewpoint of storage stability. It is preferable to The concentrate of the cleaning composition for non-ferrous metals can be diluted with water so that each component has the above-described content (that is, the content at the time of washing) before use. Furthermore, the concentrate of the detergent composition for non-ferrous metals can be used by adding each component separately at the time of use. In the present disclosure, "during use" or "during cleaning" of the concentrated cleaning composition for non-ferrous metals refers to a state in which the concentrate of the cleaning composition for non-ferrous metals is diluted.

<Washing method for members>
The method for cleaning a member according to the present embodiment includes a cleaning step of cleaning a member containing the nonferrous metal or the like using the cleaning composition for the nonferrous metal or the like.

In the cleaning step, the method for cleaning the member having the nonferrous metal or the like using the cleaning agent composition for the nonferrous metal or the like includes continuous cleaning, that is, immersion cleaning, spray cleaning, brush cleaning, electrolytic cleaning, or the like. A method of contacting the member with a cleaning agent composition for metals and the like to clean the member can be exemplified.

The cleaning method may include, after the cleaning step, a drying step of removing excess cleaning composition for non-ferrous metals, etc. adhering to the member by air purging or the like, followed by drying.

In the cleaning method, after the cleaning step and before the drying step, a rinsing step of rinsing the member having the non-ferrous metal or the like with water or the like can be provided. From the viewpoint of doing so, it is preferable not to have a rinse treatment step immediately after the washing step. Therefore, the cleaning composition for non-ferrous metals can be used as a non-rinse type cleaning composition for non-ferrous metals.

<Preparation of detergent composition for non-ferrous metals, etc.>
Preparations were made so as to have the compositions shown in Table 1 or 2, and detergent compositions for non-ferrous metals, etc., according to Examples and Comparative Examples were obtained. The contents of each code described in each table are shown below.

[Component A]
・Lauric acid [Wako 1st grade manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.]
・Myristic acid [Fuji Film Wako Pure Chemical Co., Ltd. Wako special grade]
・Linoleic acid [Wako 1st grade manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.]
・Oleic acid [Wako 1st grade manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.]
・Isostearic acid [KOKYU ALCOHOL KOGYO Co., Ltd.]

[Component B]
- Polyethylene glycol (8) cetyl ether [Brownon CH308, manufactured by Aoki Yushi Kogyo Co., Ltd.]
- Polyethylene glycol (4) oleyl ether [Brownon EN1504 manufactured by Aoki Yushi Kogyo Co., Ltd.]
- Polyethylene glycol (9) oleyl ether [Brownon EN1509 manufactured by Aoki Yushi Kogyo Co., Ltd.]
- Polyethylene glycol (13.5) oleyl ether [Brownon EN1513.5, manufactured by Aoki Yushi Kogyo Co., Ltd.]
- Polyethylene glycol (15.0) stearyl ether [Brownon SR715, manufactured by Aoki Oil Industry Co., Ltd.]

[Non-component B]
・ Polyethylene glycol (5) tridecyl ether [Fine Surf TD-50 manufactured by Aoki Oil Industry Co., Ltd.]
・ Polyoxyethylene (10) octylphenyl ether [Fujifilm Wako Pure Chemical Industries, Ltd. for biochemistry]
- Polyethylene glycol (5) alkyl (mixture of secondary dodecyl and secondary tetradecyl) ether [manufactured by Nippon Shokubai Co., Ltd., Softanol 50]

Nonionic activator 1, nonionic activator 2, and nonionic activator 3 in Table 2 were each synthesized by the following method.

[Synthesis example of nonionic surfactant 1]
2-Ethyl-1-hexanol [Wako special grade manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.] was charged in an autoclave, and after purging with nitrogen, dehydration was performed under reduced pressure to reduce the water content in the system to 0.2% by mass or less, and ethylene oxide (12 mol) was added and aged at 125° C. and 0.3 MPa or less to obtain an EO adduct. Next, propylene oxide (2 mol) was added and aged at 125° C. and 0.3 MPa or less to obtain an EO-PO adduct. The obtained nonionic surfactant 1 is represented by the general formula (II), R ² : 2-ethylhexyl group, n: 12, m: 2.

[Synthesis example of nonionic surfactant 2]
Lauryl alcohol (1 mol, "Calcoal 2098" manufactured by Kao Corporation) and a catalytic amount of potassium hydroxide (manufactured by Nacalai Tesque Co., Ltd.) are charged in an autoclave, and after purging with nitrogen, dehydration is performed under reduced pressure to reduce the water content in the system to 0. 0.2% by mass or less, ethylene oxide (6 mol) was added and aged at 125° C. and 0.3 MPa or less to obtain an EO adduct. The resulting nonionic surfactant 2 is represented by formula (II), R ² : dodecyl group, n: 6, m: 0.

[Synthesis Example of Nonionic Activator 3]
Polyethylene glycol (7) alkyl (mixture of secondary dodecyl and secondary tetradecyl) ether (1 mol, "SOFTANOL 70" manufactured by Nippon Shokubai Co., Ltd.) and a catalytic amount of potassium hydroxide (manufactured by Nacalai Tesque Co., Ltd.) were charged into an autoclave, After purging with nitrogen, dehydration is performed under reduced pressure to reduce the water content in the system to 0.2% by mass or less, propylene oxide (4.5 mol) is added at 125 ° C. and 0.3 MPa or less, aged, and the EO-PO adduct. (Nonionic surfactant B11) was obtained. The obtained nonionic surfactant 3 is represented by the general formula (II), R ² : dodecyl group or tetradecyl group, n: 7, m: 4.5.

[Component D]
・ Monoethanolamine (MEA) [2-aminoethanol reagent special grade manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.]
・ Diethanolamine (DEA) [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., 2,2′-iminodiethanol Wako first grade]
・Triethanolamine (TEA) [manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., 2,2′,2″-nitrilotriethanol, Wako First Grade]
・N-methylethanolamine [manufactured by Nippon Nyukazai Co., Ltd., amino alcohol MMA]

[Other ingredients]
・ Dodecanedioic acid: [Fuji Film Wako Pure Chemical Co., Ltd., Wako special grade]
・ Sodium hydroxide: [manufactured by Kanto Chemical Co., Ltd., deer special grade, solid content 48% by mass]

<Preparation of detergent composition>
The detergent composition for non-ferrous metals etc. according to each example or comparative example was prepared by the following procedure so that each component shown in Table 1 or Table 2 was contained in each table. The numerical value indicating the content of each component in Tables 1 and 2 represents the amount of the active ingredient, and the unit is % by mass.
Procedure 1. Water was added to the vessel, and each component was added and mixed with stirring to obtain a mixed liquid.
Procedure 2. The pH is the pH of the detergent composition at 25° C., and the value was measured 3 minutes after immersing the electrode of a pH meter (HM-30G, manufactured by Toa DKK Co., Ltd.) in the detergent composition.

<Evaluation>
[Rust prevention evaluation]
[Evaluation when hardness component concentration of detergent composition for non-ferrous metals, etc. is 0 ppm]
In a 100 mL glass beaker, 100 g of the detergent composition for non-ferrous metals etc. according to each example or comparative example was blended, heated to 60 ° C., and degreased and washed with acetone. 1.6 mm) was immersed in the detergent composition for non-ferrous metals for 30 seconds. The aluminum alloy plate was removed from the cleaning composition for non-ferrous metals and the like, and dried by blowing air without rinsing. The aluminum alloy plate after drying is immersed in 50 g of deionized water heated to 60° C. for 1 hour, and the amount of aluminum ions eluted in water after immersion is measured using an ICP emission spectrometer (manufactured by Agilent, Agilent 5110 ICP-OES). The aluminum elution amount per unit area (g/m ² ) was calculated from the measurement result and the surface area of the aluminum alloy plate. After the test, the surface of the aluminum alloy plate was visually observed and evaluated according to the following evaluation criteria.
4: 100 to 75% black discoloration on the surface 3: 75 to 50% black discoloration on the surface 2: 50 to 25% black discoloration on the surface 1: 25 to 0% black discoloration on the surface

[Evaluation when hardness component (calcium ion or magnesium ion) concentration of detergent composition for non-ferrous metals, etc. is 100 ppm]
Calcium chloride or magnesium chloride was added to 100 ml of the detergent composition for non-ferrous metals etc. according to each example or comparative example so that the calcium ion or magnesium ion hardness component was 100 ppm, and the mixture was allowed to stand at 60°C for 24 hours, It was evaluated by the same procedure as the above rust prevention property evaluation.

[Evaluation of Metallic Soap Precipitation Inhibitory Property]
Calcium chloride or magnesium chloride is added to 100 ml of the detergent composition for non-ferrous metals etc. according to each example or comparative example so that the calcium ion or magnesium ion of the hardness component becomes 100 ppm, and left to stand at 60° C. for 24 hours. Presence or absence of precipitation of metallic soap was confirmed from the appearance of the cleaning composition for non-ferrous metals after 48 hours.

The results of each of the above evaluations are shown in each table.

Claims (8)

a compound (component A) represented by the following general formula (I),
R ¹ -COOM (I)
(In general formula (I), R ¹ represents a linear or branched alkyl group or alkenyl group having 11 to 21 carbon atoms, and M represents a cation or a hydrogen atom.)
a nonionic surfactant (component B) represented by the following general formula (II), and R ² —O—{(EO)n/(PO)m}—H (II)
(In general formula (II), R ² is an alkyl group having 16 to 21 carbon atoms or an alkenyl group having 16 to 21 carbon atoms, EO is an ethyleneoxy group, PO is a propyleneoxy group, and n is the average addition mole of EO. number, m is the average number of added moles of PO, n is a number of 2 or more and 20 or less, m is a number of 0 or more and 20 or less, and the addition form of PO and EO in { } is random arrangement, block can be any array.)
A detergent composition for non-ferrous metals, etc., containing water (component C). 2. The cleaning composition for non-ferrous metals etc. according to claim 1, wherein the mass ratio of said component B to said component A (mass of said component B/mass of said component A) is 0.1 or more and 10 or less. 3. The cleaning composition for non-ferrous metals etc. according to claim 1 or 2, further comprising an amine (component D) represented by the following general formula (III).
(In general formula (III), R ¹ and R ² are each independently a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a phenyl group, a benzyl group, an aminoethyl group, a hydroxyethyl group, or a hydroxypropyl group; and ^R3 is a hydroxyethyl group or a hydroxypropyl group.) 4. The cleaning composition for non-ferrous metals etc. according to claim 3, wherein the mass ratio of said component D to said component A (mass of said component D/mass of said component A) is 0.1 or more and 10 or less. A method for cleaning a member, comprising a cleaning step of cleaning a member having a nonferrous metal or the like using the cleaning composition for nonferrous metal or the like according to any one of claims 1 to 4. 6. The member cleaning method according to claim 5, further comprising a drying step after the cleaning step. 7. The member cleaning method according to claim 6, wherein no rinsing process is provided after the cleaning process and before the drying process. The member cleaning method according to any one of claims 5 to 7, wherein the non-ferrous metal or the like is aluminum or an aluminum alloy.