Treatment agent composition

Abstract

To provide a treatment agent composition which is applied to materials containing aluminum, such as a cleansing agent and a disinfectant, and can suppress corrosion of aluminum.SOLUTION: There is provided a treatment agent composition applied to materials containing aluminum, comprising: (a) 1.5 mass% or more and 15 mass % or less of an alkaline agent; and (b) one or more compounds selected from a sulfonic acid having a hydrocarbon group with 10 or more and 24 or less carbon atoms, an alkaline metal salt of the sulfonic acid, and an alkanolamine salt of the sulfonic acid. The treatment agent composition is used in the presence of calcium ions and / or magnesium ions, and satisfies the following two requirements. (Requirement 1) The treatment agent composition optionally contains a metal scavenger having a pKCa of more than 2.5 in a defined amount. (Requirement 2) The treatment agent composition optionally contains a surfactant selected from an amine oxide type surfactant, a betaine type surfactant, and a quaternary ammonium type surfactant in a defined amount.SELECTED DRAWING: None

Description

[Technical Field]

[0001] This invention relates to a treatment agent composition. [Background technology]

[0002] Aluminum and aluminum alloys (hereinafter, "aluminum" includes aluminum alloys) are lightweight, have excellent thermal and electrical conductivity, are easy to process, and some alloys are high-strength metals, making them widely used in industrial products. On the other hand, aluminum has the drawback of being easily corroded under alkaline conditions. Aluminum is used, for example, in equipment and facilities used for food processing and / or cooking. These devices and facilities are prone to heavy oil stains, and strong disinfection is necessary to combat food poisoning and other pathogens. Therefore, strong alkaline treatment agents containing alkaline agents, such as cleaning agents and disinfectants, are often used for cleaning and sterilization.

[0003] As an example of a treatment agent containing an alkaline agent, Patent Document 1 discloses an aqueous liquid detergent composition containing (A) 1 to 30% by weight of alkali metal silicate, (B) 0.5 to 10% by weight of organic phosphonate, and (C) 0.5 to 30% by weight of a highly foaming surfactant, wherein the M2O / SiO2 molar ratio of the entire composition (where M is an alkali metal) is 1 / 1 to 1 / 3, and (D) the content of alkali metal carbonate is 2% by weight or less. Furthermore, Patent Document 2 discloses a foaming cleaning agent composition for food and beverage manufacturing equipment containing (A) 0.1 to 5% by mass of an alkaline agent, (B) 0.5 to 5% by mass of an anionic surfactant, (C) 0.5 to 5% by mass of an alkyldimethylamine oxide having an alkyl or alkylene group with 12 to 18 carbon atoms, (D) 0.5 to 5% by mass of an aromatic sulfonate, (E) 0.1 to 5% by mass of a water-soluble calcium compound, (F) 1 to 10% by mass of a metal ion chelating agent, and the remainder being (G) water. Furthermore, Patent Document 3 discloses a foaming detergent composition containing (A) alkyldimethylamine oxide, (B) alkanesulfonic acid or a salt thereof, (C) aromatic sulfonic acid or a salt thereof, (D) alkali metal hydroxide, (E) organic phosphonic acid or a salt thereof, (F) alkali metal hypochlorite, and (G) water. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2007-2014 [Patent Document 2] Japanese Patent Publication No. 2010-150307 [Patent Document 3] Japanese Patent Publication No. 2017-57345 [Overview of the project] [Problems that the invention aims to solve]

[0005] Strongly alkaline treatment agents can cause aluminum corrosion, and as a method to suppress this, silicates are commonly used, as described in Patent Document 1. However, when silicates are used, residue often remains during rinsing, causing the surface to whiten. Therefore, a technology to suppress corrosion without using silicates is considered more desirable in this industry, but it is difficult to suppress aluminum corrosion without impairing the original purpose of the treatment agent, and the methods described in Patent Documents 2 and 3 are still insufficient.

[0006] The present invention provides a treatment agent composition, such as a cleaning agent or disinfectant, that can be applied to aluminum-containing materials and can suppress aluminum corrosion without the use of silicates. [Means for solving the problem]

[0007] The present invention relates to a treatment agent composition applicable to aluminum-containing materials, comprising (a) 1.5% by mass or more and 15% by mass or less of an alkaline agent, and (b) one or more compounds selected from sulfonic acid having hydrocarbon groups with 10 to 24 carbon atoms, alkali metal salts of the sulfonic acid, and alkanolamine salts of the sulfonic acid [hereinafter referred to as component (b)]. The treatment agent composition is used in the presence of calcium ions and / or magnesium ions. The following requirements 1 and 2 must both be satisfied: This relates to a treatment agent composition. (Requirement 1) (c)pK Ca The mixture contains a metal scavenger with a concentration of more than 2.5 (excluding component (b)) (hereinafter referred to as component (c)), and the total content of component (c) is 5% by mass or less relative to component (b). (Requirement 2) (d) The material optionally contains a surfactant selected from (d1) amine oxide type surfactant, (d2) betaine type surfactant, and (d3) quaternary ammonium type surfactant [hereinafter referred to as component (d)], and the total content of component (d) is 10% by mass or less relative to component (b).

[0008] Furthermore, the present invention relates to a treatment agent composition containing 1.5% to 15% by mass of (a) an alkaline agent [hereinafter referred to as component (a)] when treating an aluminum-containing material, and includes (b) one or more compounds selected from sulfonic acid having 10 to 24 hydrocarbon groups, alkali metal salts of the sulfonic acid, and alkanolamine salts of the sulfonic acid [hereinafter referred to as component (b)], and (c) pK in total amount of 5% by mass or less relative to component (b). Ca The present invention relates to a method for preventing corrosion of aluminum materials, comprising treating the material with a metal scavenger having a ratio greater than 2.5 (excluding component (b)) (hereinafter referred to as component (c)), a surfactant selected from (d) (d1) amine oxide type surfactant, (d2) betaine type surfactant, and (d3) quaternary ammonium type surfactant in a total amount of 10% by mass or less relative to component (b) (hereinafter referred to as component (d)), calcium ions and / or magnesium ions, and water.

Advantages of the Invention

[0009] According to the present invention, there are provided a treatment agent composition applied to a material containing aluminum, such as a detergent or a bactericide, which can suppress the corrosion of aluminum without using silicic acid, and a method for corrosion protection of an aluminum material.

Embodiments for Carrying Out the Invention

[0010] 〔Treatment Agent Composition〕 The treatment agent composition of the present invention is a treatment agent composition applied to a material containing aluminum (hereinafter also referred to as an aluminum material), which contains a predetermined amount of component (a) and component (b), and the treatment agent composition is used in the presence of calcium ions and / or magnesium ions, preferably at least calcium ions. Further, the total content of the optionally contained component (c) is 5% by mass or less with respect to component (b) (requirement 1), and the total content of the optionally contained component (d) is 10% by mass or less with respect to component (b) (requirement 2).

[0011] Component (b) of the present invention is such that when the treatment agent composition of the present invention satisfying requirement 1 and requirement 2 is applied to an aluminum material in the presence of calcium ions and / or magnesium ions, it binds to the calcium ions and / or magnesium ions to form a component effective for corrosion protection of aluminum, and it is presumed that the corrosion of the aluminum material by component (a) is prevented. The component effective for corrosion protection of aluminum formed from component (b) is, for example, a calcium salt of a sulfonic acid having a hydrocarbon group with 10 to 24 carbon atoms. This compound binds to the surface of the aluminum material via calcium, and it is presumed that by forming a surface state in which the hydrocarbon group is oriented on the opposite side (outer side) of the calcium binding site, the contact of component (a) with the aluminum material is reduced, thereby protecting against corrosion. The mechanism of the expression of the effects of the present invention is not limited to this.

[0012] Examples of the alkali agent of component (a) include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, and alkanolamines such as monoethanolamine, diethanolamine, and triethanolamine. The treatment agent composition of the present invention contains 1.5% by mass or more and 15% by mass or less of component (a). The content of component (a) in the treatment agent composition of the present invention may be, for example, 1.8% by mass or more, further 2% by mass or more, and 10% by mass or less, further 5% by mass or less, depending on the type of treatment.

[0013] Component (b) is one or more compounds selected from sulfonic acids having a hydrocarbon group with 10 to 24 carbon atoms, alkali metal salts of the sulfonic acids, and alkanolamine salts of the sulfonic acids. Component (b) is considered to form a component effective for corrosion prevention of aluminum when the treatment agent composition of the present invention is applied to a material containing aluminum. Examples of the hydrocarbon group of component (b) include aliphatic hydrocarbon groups, further alkyl groups and / or alkenyl groups. The number of carbon atoms of the hydrocarbon group of component (b) may be, for example, 12 or more, further 14 or more, and 22 or less, further 20 or less.

[0014] (b) Examples of component (b) include alkyl (10 to 18 carbon atoms) benzenesulfonic acid and its alkali metal salt or alkanolamine salt, alkane (10 to 24 carbon atoms) sulfonic acid and its alkali metal salt or alkanolamine salt, α-sulfo fatty acid ester obtained by sulfonating an ester of a fatty acid having 10 to 18 carbon atoms and an alcohol having 1 or 2 carbon atoms and its alkali metal salt or alkanolamine salt, internal olefin sulfonic acid having 10 to 24 carbon atoms and its alkali metal salt or alkanolamine salt, and α-olefin sulfonic acid having 10 to 24 carbon atoms and its alkali metal salt or alkanolamine salt. The salt of the sulfonic acid in component (b) is an alkali metal salt such as sodium or potassium, or an alkanolamine salt such as monoethanolamine, diethanolamine, or triethanolamine. The treatment agent composition of the present invention preferably contains, as component (b), one or more compounds selected from alkyl (10 to 18 carbon atoms) benzenesulfonic acid, alkane (10 to 24 carbon atoms) sulfonic acid, alkali metal salts of the sulfonic acid, and alkanolamine salts of the sulfonic acid.

[0015] Component (b) of the present invention also acts as a cleaning agent, but it is generally believed that its cleaning power decreases in the presence of hardness components such as water-soluble calcium. However, among the components of (b), alkyl (10 to 18 carbon atoms) benzenesulfonic acid and its alkali metal salt or alkanolamine salt [hereinafter referred to as LAS], and alkane (10 to 24 carbon atoms) sulfonic acid and its alkali metal salt or alkanolamine salt [hereinafter referred to as SAS] have the remarkable effect of suppressing aluminum corrosion and maintaining cleaning power even in the presence of hardness components. From the viewpoint of corrosion suppression and cleaning power, it is preferable that the treatment agent composition of the present invention contains SAS as component (b), and the mass ratio of SAS / component (b) is preferably 0.1 or more, more preferably 0.15 or more, and preferably 1 or less.

[0016] The treatment agent composition of the present invention may contain components other than components (a) and (b), but from the viewpoint of suppressing aluminum corrosion, it is necessary to satisfy both requirement 1 and requirement 2 below. (Requirement 1) (c)pK Ca The mixture contains a metal scavenger with a concentration of more than 2.5 (excluding component (b)) (hereinafter referred to as component (c)), and the total content of component (c) is 5% by mass or less relative to component (b). (Requirement 2) (d) The material optionally contains a surfactant selected from (d1) amine oxide type surfactant, (d2) betaine type surfactant, and (d3) quaternary ammonium type surfactant [hereinafter referred to as component (d)], and the total content of component (d) is 10% by mass or less relative to component (b).

[0017] With respect to requirement 1, the treatment agent composition of the present invention has a total content of component (c) of 5% by mass or less, further 1% by mass or less, and further 0.1% by mass or less relative to component (b).

[0018] (c) The components are selected from (c1) aminocarboxylic acid or a salt thereof, (c2) organic phosphonic acid or a salt thereof, (c3) hydroxypolycarboxylic acid or a salt thereof, and (c4) carboxylic acid type polymer or a salt thereof, and (c5) fatty acid having 11 or more carbon atoms or a salt thereof, pK Ca Examples of metal scavengers with a ratio greater than 2.5 include (c) components, which may consist of two or more types, in which case the total content of (c) components must satisfy requirement 1.

[0019] (c) pK of component Ca The following method was used for measurement: <pK Ca Measurement method > As a buffer solution, prepare an aqueous solution containing 0.1 M KOH, 0.1 M NH4Cl, and 0.1 M NH4OH. All sample solutions are prepared using this buffer solution. Furthermore, all of these sample solutions are measured at a temperature of 20°C. Ca 2+ For measuring concentration, one example is the ion meter 920A manufactured by Orion Co., Ltd. and Ca2+ An ion electrode can be used. First, determine the relationship between the calcium chloride concentration and the electrode potential, and create a calibration curve. For a 5.36×10 -2 mol / L solution of calcium chloride and a 5.36×10 -4 mol / L solution of the sample compound ((c) component) are prepared. Add 1 ml of the calcium chloride solution to 100 ml of the prepared sample compound solution and stir for 5 minutes. Measure the remaining Ca 2+ concentration using a Ca 2+ ion electrode. Assume that the sample compound forms a chelate complex with Ca 2+ in a 1:1 ratio, and calculate pK Ca (calcium stability constant, Ca stability constant) from the following formula.

[0020] [Equation]

[0021] Requirement 1 is that in the treatment agent composition of the present invention, the total content of metal scavengers selected from (c1) aminocarboxylic acid or its salt, (c2) organic phosphonic acid or its salt, (c3) hydroxy polyvalent carboxylic acid or its salt, (c4) carboxylic acid type polymer or its salt, and (c5) fatty acid having 11 or more carbon atoms or its salt, with a pK Ca greater than 2.5, is 5% by mass or less, further 1% by mass or less, and further 0.1% by mass or less with respect to the (b) component.

[0022] Examples of (c1) aminocarboxylic acid or its salt include one or more selected from ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA), diethylenetriaminepentaacetic acid (DPTA), N-hydroxyethyl-ethylenediaminetriacetic acid (HEDTA), methylglycine diacetic acid (MGDA), aspartic acid diacetic acid (ASDA), glutamic acid diacetic acid (GLDA), and their salts. (c2) Examples of organic phosphonic acids or their salts include 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP), aminotrimethylenephosphonic acid (ATMP), phosphobutanetricarboxylic acid, and one or more selected from these salts. (c3) Examples of hydroxypolycarboxylic acids or their salts include succinic acid, salicylic acid, oxalic acid, malic acid, lactic acid, fumaric acid, tartaric acid, citric acid, gluconic acid, and salts thereof. (c4) Examples of carboxylic acid type polymers or salts thereof include polyacrylates, polymaleates, and acrylic acid / maleic acid copolymer salts. The weight-average molecular weight of the carboxylic acid type polymer or salt thereof may be, for example, 2,000 or more and 100,000 or less. (c5) Examples of fatty acids having 11 or more carbon atoms or their salts include fatty acids having 12, 14, 16, 18, or 20 carbon atoms, and salts thereof. The fatty acids may be straight-chain or branched-chain fatty acids. (c) Examples of salts in component (c) include alkali metal salts such as sodium and potassium, and alkanolamine salts.

[0023] With respect to requirement 2, the treatment agent composition of the present invention has a total content of component (d) of 10% by mass or less, further 5% by mass or less, further 1% by mass or less, and further 0.1% by mass or less relative to component (b). Component (d) may consist of two or more types, but in that case, the total content of component (d) must satisfy requirement 2.

[0024] Component (d) is a surfactant that readily interacts with component (b) and affects the effect of component (b). Therefore, in this invention, the total content of component (d) is limited to the range of requirement 2.

[0025] (d) Component is a surfactant selected from (d1) amine oxide type surfactant, (d2) betaine type surfactant, and (d3) quaternary ammonium type surfactant. Component (d) preferably has a hydrocarbon group with 8 to 24 carbon atoms, such as an alkyl group or an alkenyl group.

[0026] (d1) Examples of amine oxide-type surfactants include (d1-1) alkyl (11 to 18 carbon atoms) dialkyl (1 to 3 carbon atoms) amine oxides such as cocoalkyldimethylamine oxide, lauryldimethylamine oxide, and myristyldimethylamine oxide, and (d1-2) fatty acid (11 to 18 carbon atoms) amidopropyl dialkyl (1 to 3 carbon atoms) amine oxides such as lauric acid amidopropyl dimethylamine oxide, myristic acid amidopropyl dimethylamine oxide, and palmitic acid amidopropyl dimethylamine oxide.

[0027] (d2) Examples of betaine-type surfactants include carboxybetaine-type surfactants such as alkyldimethylaminoacetic acid betaine and fatty acid amidopropyl betaine; sulfobetaine-type surfactants such as alkyl sulfobetaine and alkyl hydroxysulfobetaine; imidazoline-based betaine-type surfactants; and phosphobetaine-type surfactants.

[0028] (d3) Examples of quaternary ammonium surfactants include dialkyl (e.g., 8 to 24 carbon atoms) dimethylammonium halide, benzalkonium chloride, benzethonium chloride, or cationic surfactants in which the counterions of these are converted to other anions, and cationic surfactants having bactericidal properties.

[0029] The treatment agent composition of the present invention may contain a compound selected from water-soluble calcium compounds and water-soluble magnesium compounds. Examples of water-soluble calcium compounds and water-soluble magnesium salts include calcium chloride and magnesium chloride. When a compound selected from water-soluble calcium compounds and water-soluble magnesium compounds is included, its content is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, and preferably 3% by mass or less, more preferably 2% by mass or less, and even more preferably 1% by mass or less, from the viewpoint of corrosion prevention effect. This upper limit is preferred from the viewpoint of cleaning power when the treatment agent composition of the present invention is a cleaning agent composition.

[0030] The treatment agent composition of the present invention may contain (e) a solubilizer [hereinafter referred to as component (e)] for purposes such as improving the stability of the composition. However, if the solubilizer of component (e) has an anionic group, the pK of the solubilizer ca (The measurement method is as described above.) It is preferable that the value is 2.5 or less. (e) Examples of solubilizers for the component include (e1) fatty acids having 6 to 10 carbon atoms, and (e2) benzenesulfonates which may have 1 to 3 alkyl groups having 1 to 3 carbon atoms substituted. However, the pKCa of these must be 2.5 or less. Examples of (e1) include hexanoic acid, octanoic acid, decanoic acid, and 2-ethylhexanoic acid. Examples of (e2) include toluenesulfonic acid, xylenesulfonic acid, and cumenesulfonic acid. The content of component (e) in the treatment agent composition of the present invention is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 1% by mass or more, and preferably 15% by mass or less, more preferably 10% by mass or less, and even more preferably 8% by mass or less.

[0031] In addition to components (b), (c5), and (d), the treatment agent composition of the present invention may contain (f) a surfactant having a hydrocarbon group with 12 to 20 carbon atoms [hereinafter referred to as component (f)]. Component (f) is used in a range that does not impair the effects of the present invention. When component (f) is used, the mass ratio of component (b) / [component (b) + component (f)] is, for example, preferably 0.3 or more, more preferably 0.5 or more, even more preferably 0.7 or more, even more preferably 0.9 or more, even more preferably 0.95 or more, and preferably 1.0 or less, and may be 1.0. Examples of component (f) include alkyl sulfate salts, polyoxyethylene alkyl sulfate salts (average number of moles of oxyethylene added is 1 to 5, and the salts are sodium salts and potassium salts), polyoxyethylene alkyl ethers (average number of moles of oxyethylene added is 3 to 20), and alkyl glycoside-type surfactants (average degree of glucose condensation is 1 to 3). The alkyl group of these components (f) may have 12 to 20 carbon atoms. Examples of salts of component (f) include alkali metal salts and alkanolamine salts.

[0032] The treatment agent composition of the present invention is preferably such that the corrosion occurrence rate of aluminum material, as measured by the following method, is 50 area or less. <Method for measuring the corrosion rate of aluminum materials> An aluminum plate (1.0 mm × 20 mm × 50 mm) is immersed in 20 mL of a treatment solution prepared by mixing 5 g of the treatment agent composition to be measured with 95 g of water with a hardness of 4°DH at 20°C for 60 minutes. After rinsing the aluminum plate with deionized water, the occurrence of whitening due to aluminum corrosion is visually observed. The corrosion occurrence rate (%) is calculated from the area of ​​the whitened portion and the area of ​​the aluminum plate immersed in the treatment solution using the formula: (Area of ​​whitened portion / Area of ​​aluminum plate immersed in treatment solution) × 100.

[0033] The treatment agent composition of the present invention may optionally contain inorganic silicates for purposes other than corrosion inhibitors, such as alkaline agents. However, when used in applications where rinsing is required after treatment, such as in cleaning agents, whitening due to inorganic silicates may occur during rinsing, and caution is required when using such compositions. The inorganic silicate content of the treatment agent composition of the present invention may be, for example, 0.5% by mass or less, further 0.3% by mass or less, further 0.1% by mass or less, and may even be 0% by mass, i.e., it may not contain inorganic silicates at all.

[0034] The treatment agent composition of the present invention preferably contains water. The water used in preparing the composition may contain calcium ions and / or magnesium ions. Furthermore, the treatment agent composition of the present invention may contain calcium ions and / or magnesium ions.

[0035] An example of a treatment agent composition of the present invention is a detergent composition. Such a detergent composition may contain, for example, 1% to 15% by mass of component (a), 0.5% to 10% by mass of component (b), and water.

[0036] Another example of the treatment agent composition of the present invention is, for example, a disinfectant composition. Such a disinfectant composition may contain, for example, 1% to 15% by mass of component (a), 0.5% to 10% by mass of component (b), and water.

[0037] [Methods for preventing corrosion of aluminum materials] The present invention relates to a treatment agent composition in which (a) an alkaline agent [component (a)] is used to treat an aluminum-containing material, and (b) one or more compounds selected from sulfonic acid having hydrocarbon groups with 10 to 24 carbon atoms, alkali metal salts of the sulfonic acid, and alkanolamine salts of the sulfonic acid [component (b)], and (c) pK in a total amount of 5% by mass or less, further 1% by mass or less, and further 0.1% by mass or less relative to component (b). Ca The present invention provides a method for corrosion prevention of aluminum materials (hereinafter also referred to as the corrosion prevention method of the present invention), which involves treating the material in the presence of a metal scavenger with a ratio greater than 2.5 [excluding component (b)] [component (c)], a surfactant selected from (d) (d1) amine oxide type surfactant, (d2) betaine type surfactant, and (d3) quaternary ammonium type surfactant in a total amount of 10% by mass or less, further 5% by mass or less, further 1% by mass or less, and further 0.1% by mass or less of component (b), calcium ions and / or magnesium ions, preferably at least calcium ions, and water. The corrosion prevention method of the present invention may be appropriately applied to the matters described in the treatment agent composition of the present invention. Specific examples and preferred examples of components (a), (b), (c), (d), etc., in the corrosion prevention method of the present invention are the same as those in the treatment agent composition of the present invention. In the corrosion prevention method of the present invention, the treatment agent composition is used in treatment with a composition and application method that is appropriate to the purpose of the treatment. The corrosion protection method for aluminum materials according to the present invention is preferably carried out using the treatment agent composition of the present invention.

[0038] In the corrosion prevention method of the present invention, when treating an aluminum material with a treatment agent composition containing a predetermined amount of component (a), the aluminum material is protected from corrosion by coexisting component (b), calcium and / or magnesium ions, and water, and by adjusting the amounts of components (c) and (d) to satisfy requirements 1 and 2 of the treatment agent composition of the present invention.

[0039] Another aspect of the present invention is a method for preventing corrosion of aluminum materials, in which a material containing aluminum is treated with a treatment agent composition containing 1.5% by mass or more and 15% by mass or less of component (a), and the treatment is carried out in the presence of component (b), calcium ions and / or magnesium ions and water, and satisfies both of the following requirements 1' and 2'. (Requirement 1') (c)pK Ca A metal scavenger with a value greater than 2.5 (excluding component (b)) (hereinafter referred to as component (c)) is arbitrarily coexisted, and the amount of coexisting component (c) is 5% by mass or less in total relative to component (b), further 1% by mass or less, and further 0.1% by mass or less. (Requirement 2') (d) A surfactant having a functional group capable of forming an ion pair with the anion of component (b) [hereinafter referred to as component (d)] is optionally coexisted, wherein the total amount of coexisting component (d) is 10% by mass or less, further 5% by mass or less, further 1% by mass or less, and further 0.1% by mass or less relative to component (b). [Examples]

[0040] Example 1 and Comparative Example 1 The treatment agent compositions shown in Table 1 were prepared, and their corrosion protection properties against aluminum were evaluated using the following method. The results are shown in Table 1. <Method for evaluating aluminum corrosion resistance> (1) Rating 1 The treatment agent composition was diluted with 4°DH hard water (Ca / Mg = 7 / 3 molar ratio) to prepare a 5% by mass treatment solution. An aluminum plate (size 1.0 mm × 20 mm × 50 mm) was immersed in the treatment solution at 20°C and left for 1 hour. After that, the aluminum corrosion protection was evaluated by visual inspection. No change was indicated by ○, and a change was indicated by ×. (2) Rating 2 In Evaluation 1, the evaluation was carried out in the same manner as before, except that 2°DH hard water, prepared by diluting 4°DH hard water with water, was used to dilute the treatment agent composition. (3) Rating 3 In Evaluation 1, the evaluation was carried out in the same manner as before, except that ion-exchanged water (water with a hardness of 0°DH) was used to dilute the treatment agent composition.

[0041] [Table 1]

[0042] In the table, under evaluation 3 (0°dH), where calcium ions and / or magnesium ions are not present, the surface of the aluminum plate changed for all compositions except Example 3. However, as in Example 3, when calcium chloride, a calcium ion source, is incorporated and treatment can be performed in the presence of calcium ions, the surface of the aluminum plate did not change even under evaluation 3 (0°dH). Furthermore, the compositions of the examples did not change the surface of the aluminum plate under evaluations 2 and 3, where calcium ions and / or magnesium ions are present. From these results, it can be seen that the treatment agent compositions of the examples can prevent corrosion of aluminum materials when used in the presence of calcium ions and / or magnesium ions. On the other hand, in Comparative Examples 1 to 8, which did not satisfy both requirement 1 and requirement 2, and in Comparative Example 9, which did not contain component (b), the surface of the aluminum plate changed even under evaluation conditions 2 (partial) and evaluation 3 (4°dH), which are conditions in which calcium ions and / or magnesium ions coexist. From this, it can be seen that even when using component (b) of the present invention, corrosion protection of aluminum material is not possible unless requirements 1 and requirement 2 are met.

[0043] The components listed in Table 1 are as follows: (b) Component • SAS: Alkane (15 carbon atoms) sodium sulfonate LAS: Alkyl (12 carbon atoms) sodium benzenesulfonate (c) Component • EDTA: Sodium ethylenediaminetetraacetate, pK Ca 12 • Trisodium citrate: pK Ca 3.2 • Phosphobutanetricarboxylate 3 potassium: pK Ca 4.7 • Sodium polyacrylate: weight-average molecular weight 10,000, oligomer D, manufactured by Kao Corporation, pK Ca 3 • Fatty acids (12 carbon atoms): Lauric acid, pK Ca 4 (d) Ingredients • C12 amine oxide: Lauryldimethylamine oxide • Lauryl hydroxysulfobetaine: Anhitol 20HD, manufactured by Kao Corporation (The mass percentage in the table is the mass percentage calculated based on the effective content) • Quaternary ammonium salt: Benzyl-octyldimethylammonium chloride (e) Component • Fatty acids (8 carbon atoms): Octanoic acid, pK ca 2.2 • Sodium metaxylenesulfonate (pK ca (2.5 or less) (f) component • C12AS: Sodium lauryl sulfate Nonionic; polyoxyethylene (average number of added moles: 3 moles) secondary alcohol (12-14 carbon atoms) ether, Nippon Shokubai Co., Ltd. Softanol 30

[0044] Reference example The treatment agent compositions in Table 1 can be used as cleaning agent compositions for hard articles containing aluminum material. Therefore, in order to estimate the cleaning power of the treatment agent compositions against dirt adhering to aluminum material, the cleaning power was evaluated using the following method. The results are shown in Table 2.

[0045] <Method for evaluating cleaning power> A foaming cleaning agent composition was diluted with 4°dH hard water to prepare a 5% by mass aqueous solution of the foaming cleaning agent composition. Using a hand foamer, this aqueous solution was applied twice to a test piece with a predetermined amount of oil stain attached, forming a foam. After holding for 10 minutes, 700 mL of tap water was added to a 1 L beaker, and the test piece was rinsed for 1 minute using a Reenuts test machine and dried. After drying, the mass of the test piece was measured, and the "residual oil amount" was calculated based on the mass of the stainless steel 304 plate before staining. Based on the "amount of applied oil" and "amount of remaining oil" mentioned above, the cleaning rate (%) was calculated using the following formula. A higher cleaning rate indicates a composition with superior cleaning power. Cleaning rate (%) = 100 × [(Amount of applied oil) - (Amount of remaining oil)] / (Amount of applied oil)

[0046] [Table 2]

[0047] The compositions used in Reference Examples 1-6 in Table 2 are the same compositions as those in the Examples in Table 1. The results in Table 2 show a similar trend when cleaning hard articles made of aluminum. Therefore, it can be seen that the technology of the present invention enables corrosion prevention for aluminum materials without impairing the cleaning power, which is the original effect of the cleaning agent composition.

[0048] Combination example Table 3 shows examples of formulations of the treatment agent composition of the present invention.

[0049] Table 3

Claims

1. A treatment agent composition applicable to aluminum-containing materials, comprising: (a) 1.5% by mass or more and 15% by mass or less of one or more alkaline agents selected from sodium hydroxide and potassium hydroxide; and (b) 0.5% by mass or more and 10% by mass or less of one or more compounds selected from sulfonic acid having hydrocarbon groups having 10 to 24 carbon atoms, alkali metal salts of the sulfonic acid, and alkanolamine salts of the sulfonic acid [hereinafter referred to as component (b)], wherein the inorganic silicate content is 0% by mass or more and 0.1% by mass or less in the composition, The treatment agent composition is used in the presence of calcium ions and / or magnesium ions. The following requirements 1 and 2 must both be satisfied: Treatment agent composition. (Requirement 1) (c) pK Ｃａ The mixture contains, in any quantity, a metal scavenger greater than 2.5 (excluding component (b)) (hereinafter referred to as component (c)), and the total content of component (c) is 0% by mass or more and 5% by mass or less relative to component (b). (Requirement 2) (d) The product optionally contains a surfactant selected from (d1) an amine oxide type surfactant, (d2) a betaine type surfactant, and (d3) a quaternary ammonium type surfactant [hereinafter referred to as component (d)], and the total content of component (d) is 0% by mass or more and 10% by mass or less relative to component (b).

2. (c) The component is selected from (c1) aminocarboxylic acid or a salt thereof, (c2) organic phosphonic acid or a salt thereof, (c3) hydroxypolycarboxylic acid or a salt thereof, and (c4) carboxylic acid type polymer or a salt thereof, and (c5) fatty acid having 11 or more carbon atoms or a salt thereof, pK Ｃａ The treatment agent composition according to claim 1, wherein the metal scavenger is greater than 2.

5.

3. When treating an aluminum-containing material with a treatment agent composition that contains (a) 1.5% to 15% by mass of one or more alkaline agents selected from sodium hydroxide and potassium hydroxide, and (b) 0.5% to 10% by mass of one or more compounds selected from sulfonic acid having hydrocarbon groups having 10 to 24 carbon atoms, alkali metal salts of the sulfonic acid, and alkanolamine salts of the sulfonic acid [hereinafter referred to as component (b)], and the inorganic silicate content is 0% to 0.1% by mass in the composition, any (c) pK in total of 0% to 5% by mass relative to component (b), Ｃａ A method for preventing corrosion of aluminum materials, comprising treating the material with a metal scavenger having a ratio greater than 2.5 (excluding component (b)), a surfactant selected from (d1) amine oxide type surfactant, (d2) betaine type surfactant, and (d3) quaternary ammonium type surfactant in a total amount of 0% to 10% by mass relative to component (b), calcium ions and / or magnesium ions, and water.

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