JP2020152753A - Stock solution for detergent composition and detergent composition comprising the stock solution for detergent composition - Google Patents

Abstract

To provide a stock solution for detergent composition which is a non-hazardous material and can be easily handled and can obtain a water dilution type cleanser which is reduced in cost and environmental load, exhibits excellent detergency and suppresses corrosion on an article containing a metal such as aluminum.SOLUTION: There is provided a stock solution for detergent composition which contains benzyl alcohol (A), an amine compound represented by the following general formula (1) and water (C), wherein the content ratio of the component (A), the component (B) and the component (C) is 70 to 94 mass%, 3 to 20 mass% and 3 to 10 mass% in order, respectively. R1-N-R2(-R3) (1) (wherein, R1, R2 and R3 are a hydrogen atom or a hydrocarbon group. Provided that at least two of R1, R2 and R3 represent a hydrocarbon group and the total number of carbons in R1, R2 and R3 is 12 or more.)SELECTED DRAWING: None

Description

The present invention relates to a stock solution for a cleaning agent composition and a cleaning liquid composition containing the stock solution for the cleaning agent composition.

Conventionally, halogenated hydrocarbon solvents such as trichlorethylene, perchloroethylene, methylene chloride, and chlorofluorocarbon have been used for cleaning various electronic parts and alloy parts alone. Although these solvents have the advantages of being nonflammable and excellent in drying properties, their use is currently restricted due to environmental problems such as toxicity to the human body, air pollution and soil pollution. To address such problems, non-halogen type hydrocarbon-based cleaning agents, glycol-based cleaning agents, and the like have been proposed so far.

In recent years, in order to further reduce the environmental load, a water-diluted cleaning agent obtained by diluting an organic component such as a glycol ether compound with water has been proposed (see Patent Documents 1 and 2). Since the water-diluted cleaning agent has a large mass ratio of water, it is possible to reduce the cost, reduce the amount of organic components used, and suppress the emission of VOC (volatile organic compounds), which is expected to reduce the environmental load. Further, it is excellent that the detergency can be adjusted by changing the ratio of organic components according to the type of dirt.

The water-diluted cleaning agent can be classified into a diluted product (see Patent Document 1) and a stock solution product (see Patent Document 2) from the viewpoint of the timing of water dilution. The diluted product is used by transporting and storing the cleaning agent composition after water dilution, while the undiluted product is used by transporting and storing the undiluted solution for the cleaning agent composition and diluting it with water immediately before use.

Japanese Unexamined Patent Publication No. 2013-181060 International Publication WO2012 / 00568 No.

However, as a result of studies by the present inventors, there are cases where the cleaning property against oil-soluble stains is not sufficient when cleaning with a water-diluted cleaning agent containing the above-mentioned glycol ether compound. Further, when an article containing a highly corrosive metal such as aluminum is washed with the water-diluted cleaning agent, the article may be invaded by the cleaning agent and corrosion may occur. Furthermore, the water-diluted cleaning agents classified as the undiluted products are superior to the diluted products in that the organic components can be efficiently transported and stored, but are generally classified as dangerous goods by the Fire Service Act. In many cases, there was a problem in its handleability.

INDUSTRIAL APPLICABILITY According to the present invention, a water-diluted cleaning agent can be obtained, which has reduced cost and environmental load, exhibits excellent detergency, and suppresses corrosion of articles containing metals such as aluminum, and can be handled as a non-hazardous material. An object of the present invention is to provide a stock solution for an easy cleaning agent composition.

As a result of diligent studies to achieve the above problems, the present inventors have found that the above problems can be solved by a stock solution for a cleaning agent composition containing benzyl alcohol, a predetermined amine compound and water in a specific mass ratio. .. That is, the present invention relates to the following undiluted solution for a cleaning agent composition and a cleaning agent composition containing the same.

1. 1. Includes benzyl alcohol (A), amine compound (B) represented by the following general formula (1), and water (C).
A stock solution for a cleaning agent composition in which the content ratios of the component (A), the component (B) and the component (C) are 70 to 94% by mass, 3 to 20% by mass, and 3 to 10% by mass, respectively.
(1)

(In formula (1), R ¹ , R ² and R ³ each independently represent a hydrogen atom or a hydrocarbon group, whereas at least two of R ¹ , R ² and R ³ represent a hydrocarbon group. , R ¹ , R ² and R ^{3 have} a total carbon number of 12 or more.)

2. 2. Item 2. The cleaning agent composition according to Item 1, wherein the component (B) is at least one selected from the group consisting of di (2-ethylhexyl) amine, dioctylamine, triamylamine, dimethyldodecylamine and dibenzylamine. Undiluted solution for physical use.

3. 3. A cleaning agent composition containing 100 to 1500 parts by mass of water with respect to 100 parts by mass of the stock solution for the cleaning agent composition according to Item 1 or 2.

The cleaning composition according to Item 3, wherein the pH at 4.25 ° C. is 5 to 9.

5. Item 3. The cleaning agent composition according to Item 3 or 4, which is used for flux residues.

Since the stock solution for the cleaning agent composition of the present invention is a uniform solution in which the above organic components are concentrated, it can be efficiently transported and stored. The undiluted solution for the cleaning agent composition and the cleaning agent composition are both classified as non-dangerous goods under the Fire Service Act, and are easy to handle and excellent in workability.

Since the main component of the cleaning agent composition obtained by diluting the stock solution for the cleaning agent composition of the present invention with water is water, the cost and environmental load are reduced, and even if the dilution ratio of water is further increased. Excellent detergency can be maintained. Further, since the cleaning liquid composition suppresses corrosion of highly corrosive metals such as aluminum, it is suitable for cleaning articles containing such metals. Further, the cleaning agent composition is excellent in workability at the time of cleaning because foaming in the cleaning step is suppressed.

[Undiluted solution for cleaning agent composition]
The undiluted solution for a cleaning agent composition of the present invention (hereinafter, also referred to as undiluted solution) includes benzyl alcohol (A) (hereinafter, component (A)), a predetermined amine compound (B) (hereinafter, component (B)), and water (C). ) (Hereinafter, component (C)) in a specific mass ratio.

As the component (A), any known benzyl alcohol can be used without particular limitation. In conventional water-diluted cleaning agents, glycol ether-based compounds are often used as organic components, but cleaning agents in which the glycol ether-based compounds and amine compounds are used in combination may not have sufficient cleaning properties against flux residues. In addition, metals such as aluminum may be corroded. As a result of diligent studies by the present inventors, in the water-diluted cleaning agent, by using the component (A) in combination with the amine compound instead of the glycol ether compound as the organic component, excellent detergency is exhibited and cleaning is performed. It was found that the corrosion of the metal by the agent was suppressed.

The content of the component (A) is 70 to 94% by mass with respect to a total of 100% by mass of the components (A) to (C). When the content of the component (A) is less than 70% by mass with respect to the total of 100% by mass of the components (A) to (C), the undiluted solution is separated into two layers, an aqueous layer and an oil layer, and becomes non-uniform. Therefore, its transportation efficiency and storability become insufficient. Further, if the content of the component (A) exceeds 94% by mass with respect to the total 100% by mass of the components (A) to (C), sufficient detergency cannot be exhibited in the cleaning agent composition, or It becomes difficult to handle because the undiluted solution becomes highly flammable. The content of the component (A) is excellent in transport efficiency, storage and handling in the undiluted solution, and excellent in detergency in the cleaning agent composition, so that the content of the component (A) to (C) is 100% by mass in total. It is preferably about 80 to 90% by mass.

As the component (B), any known amine compound represented by the following general formula (1) can be used without particular limitation. As the component (B), one type can be used alone or two or more types can be used in combination as appropriate.

(1)

(In formula (1), R ¹ , R ² and R ³ each independently represent a hydrogen atom or a hydrocarbon group, whereas at least two of R ¹ , R ² and R ³ represent a hydrocarbon group. , R ¹ , R ² and R ^{3 have} a total carbon number of 12 or more.)

The component (B) is a so-called hydrophobic amine compound. By using the hydrophobic component (B) in combination with the component (A) in the undiluted solution of the present invention, sufficient detergency can be exhibited in the cleaning agent composition, and corrosion of the cleaning agent composition to metals such as aluminum is suppressed. Will be done. On the other hand, in the stock solution of the present invention, when a hydrophilic amine compound is used in combination with the component (A) instead of the component (B), sufficient detergency cannot be exhibited in the cleaning agent composition, and the cleaning agent composition is used. It is not preferable to use a hydrophilic amine compound in the undiluted solution because it corrodes metals such as aluminum.

The hydrophilic amine compound is, for example, an amine compound in which the total number of carbon atoms in R ¹ , R ² and R ³ of the general formula (1) is 0 to 11, and R ¹ , R ² of the general formula (1). and at least one of the substituents of R ³ are neither amine compound with a hydrocarbon group (b1) and the like in a hydrogen atom.

The amine compound (b1) is, for example, an amine compound in which at least one of R ¹ , R ² and R ³ in the general formula (1) is a hydrocarbon group having an oxygen atom and a hydrocarbon group having a nitrogen atom. Can be mentioned. Examples of the hydrocarbon group having an oxygen atom include a hydroxyalkyl group, an alkyl ether group, and a heterocycle containing an oxygen atom. Examples of the hydrocarbon group having a nitrogen atom include an aminoalkyl group and a heterocycle containing a nitrogen atom. Examples of the amine compound (b1) include amino alcohol compounds and polyamine compounds.

Examples of the hydrocarbon group in the general formula (1) include an aliphatic group having 1 to 18 carbon atoms, an alicyclic group having 5 to 10 carbon atoms, and an aromatic group.

Examples of the aliphatic group having 1 to 18 carbon atoms include a linear alkyl group having 1 to 18 carbon atoms and a branched alkyl group having 1 to 18 carbon atoms. The linear alkyl group having 1 to 18 carbon atoms is, for example, a methyl group, an ethyl group, a propyl group, a butyl group, an amyl group, a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, an undecyl group or a lauryl group. , Tridecyl group, myristyl group, pentadecyl group, palmityl group, heptadecyl group, stearyl group and the like.

The branched alkyl group having 1 to 18 carbon atoms is, for example, an isopropyl group, an isobutyl group, a sec-butyl group, a tert-butyl group, a 1-methylbutyl group, a 2-methylbutyl group, a 3-methylbutyl group and a 1-ethylpropyl group. , 1,1-dimethylpropyl group, 1,2-dimethylpropyl group, 2,2-dimethylpropyl group, isoamyl group, 2-ethylhexyl group, tert-octyl group, isododecyl group, isotridecyl group, isomyristyl group, isopenta Examples thereof include a decyl group, an isohexadecyl group, an isoheptadecyl group and an isostearyl group.

Examples of the alicyclic group having 5 to 10 carbon atoms include a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclodecyl group, a 3,5,5-trimethylcyclohexyl group, an adamantyl group and a norbornyl group. Further, in the alicyclic group, one or more hydrogen atoms may be substituted with the above-mentioned aliphatic group having 1 to 18 carbon atoms.

Examples of the aromatic group include a phenyl group, a phenylethyl group, a benzyl group, a tolyl group, a mesitylene group and a naphthyl group. Further, in the aromatic group, one or more hydrogen atoms may be substituted with the above-mentioned aliphatic group having 1 to 18 carbon atoms.

The hydrocarbon group in the general formula (1) is an aliphatic group having 5 to 12 carbon atoms because it is excellent in transport efficiency, storability and handleability in the undiluted solution, and excellent in detergency and corrosion suppression property in the cleaning agent composition. A group and a benzyl group are preferable.

The total number of carbon atoms in R ¹ , R ² and R ³ of the above general formula (1) is excellent in transport efficiency, storability and handleability in the undiluted solution, and excellent in detergency and corrosion suppression in the cleaning agent composition. , 14 to 16 is preferable.

The component (B) is, for example, dihexylamine, diheptylamine, dioctylamine, di (2-ethylhexyl) amine, di (tert-octyl) amine, dinonylamine, didecylamine, dicyclohexylamine, dicycloheptylamine, dicyclodecylamine. , Diphenylamine, dibenzylamine, ditrilamine, dimesitylamine, dinaphthylamine, methyldodecylamine, ethyldodecylamine, propyldodecylamine, methyldidecylamine, dimethyldodecylamine, diethyldodecylamine, dipropyldodecylamine, tributylamine, triamylamine , Trihexylamine, triheptylamine, triundecylamine and the like.

The component (B) is at least one selected from the group consisting of di (2-ethylhexyl) amine, dioctylamine, triamylamine, dimethyldodecylamine and dibenzylamine from the viewpoint of further excellent detergency in the cleaning agent composition. Seeds are preferred.

The boiling point of the component (B) is usually preferably 200 ° C. or higher under normal pressure because the undiluted solution has low flammability and is excellent in handleability. In addition, in this specification, "normal pressure" means standard atmospheric pressure (hereinafter, the same applies).

The content of the component (B) is 3 to 20% by mass with respect to a total of 100% by mass of the components (A) to (C). If the content of the component (B) is less than 3% by mass with respect to the total of 100% by mass of the components (A) to (C), sufficient detergency cannot be exhibited in the cleaning agent composition. Further, when the content of the component (B) exceeds 20% by mass with respect to the total 100% by mass of the components (A) to (C), the undiluted solution becomes non-uniform and its transport efficiency and storage stability are deteriorated. Insufficient and inadequate water rinseability in the cleaning composition. The content of the component (B) is excellent in transport efficiency, storability and handleability in the undiluted solution, and excellent in detergency and water rinsing property in the cleaning agent composition, so that the total mass of the components (A) to (C) is 100 mass. It is preferably about 5 to 15% by mass with respect to%.

The component (C) is not particularly limited as long as it is water, and examples thereof include ultrapure water, pure water, ion-exchanged water, and purified water.

The content of the component (C) is 3 to 10% by mass with respect to a total of 100% by mass of the components (A) to (C). If the content of the component (C) is less than 3% by mass with respect to the total of 100% by mass of the components (A) to (C), the undiluted solution becomes highly flammable and difficult to handle. Further, when the content of the component (C) exceeds 20% by mass with respect to the total of 100% by mass of the components (A) to (C), the undiluted solution becomes non-uniform, and its transport efficiency and storage stability Is insufficient. The content of the component (C) is about 4 to 8% by mass with respect to the total 100% by mass of the components (A) to (C) from the viewpoint of excellent transport efficiency, storage and handleability in the undiluted solution. preferable.

In the undiluted solution for the cleaning agent composition, the mass ratio of the component (A) to the component (B) is not particularly limited, but the undiluted solution is excellent in transport efficiency and storage property, and the cleaning property and water rinsing in the cleaning agent composition. From the viewpoint of excellent properties, it is preferably about 80 to 90: 5 to 15.

In the above-mentioned undiluted solution for cleaning agent composition, the mass ratio of the total of the components (A) and (B) to the component (C) is not particularly limited, but the undiluted solution is excellent in transport efficiency, storability and handleability. Therefore, it is preferably about 4 to 8 parts by mass with respect to a total of 100 parts by mass of the component (A) and the component (B).

The mass ratio of the component (A), the component (B) and the component (C) in the undiluted solution for the cleaning agent composition is not particularly limited, but the undiluted solution is excellent in transport efficiency, storability and handleability, and the cleaning agent composition. From the viewpoint of excellent detergency and water rinsing property, it is preferably about 77 to 91: 5 to 15: 4 to 8.

The undiluted solution for the cleaning agent composition may contain components other than the components (A) to (C) (hereinafter, referred to as other components) as long as the effects of the present invention can be obtained. Examples of other components include organic solvents and additives having a boiling point of 200 ° C. or higher, considering that the stock solution for the cleaning agent composition does not have a flash point. Specific examples of the organic solvent include glycol-based compounds, glycol ether-based compounds, aminoalcohol-based compounds, polyamine compounds, hydrocarbons, and the like having a boiling point of 200 ° C. or higher. Specific examples of the additive include rust preventives, surfactants, defoamers, antioxidants, chelating agents, organic acids and the like having a boiling point of 200 ° C. or higher.

The content of other components in the stock solution for the cleaning agent composition is not particularly limited, but is preferably about 1 to 10% by mass with respect to 100% by mass of the stock solution.

The undiluted solution for the cleaning agent composition does not have a flash point and is classified as a non-dangerous substance under the Fire Service Act, so that it is easy to handle and has excellent workability.

In the undiluted solution for the cleaning agent composition, the method of blending the components (A) to (C) and other components which are optional components is not particularly limited, and a general liquid mixing method is used. As a specific compounding method, a stirring method can be mentioned.

[Cleaning agent composition]
The cleaning agent composition of the present invention can be obtained by mixing about 100 to 1500 parts by mass of water with 100 parts by mass of the stock solution for the cleaning agent composition containing the components (A) to (C). If the amount of water blended is less than 100 parts by mass, the cost and environmental load of the cleaning agent composition become high, and there is a problem that the features of the water-diluted cleaning agent cannot be utilized. If the blending amount of water exceeds 1500 parts by mass, sufficient detergency cannot be obtained, which may cause cleaning failure.

The amount of water blended in the cleaning agent composition is 200 with respect to 100 parts by mass of the undiluted solution for cleaning agent composition from the viewpoint that the cost and environmental load of the cleaning agent composition can be reduced and sufficient cleaning properties can be obtained. It is preferably about 1200 parts by mass, more preferably about 400 to 900 parts by mass.

The cleaning agent composition becomes a cloudy state in which oil droplets are dispersed in water at 1 to 90 ° C. by mixing the undiluted solution for the cleaning agent composition and water in the above mass ratio (hereinafter, completely cloudy). Also called system).

The water-diluted cleaning agent is classified into three types, a uniform system, a heated cloudy system, and a completely cloudy system of the present invention, from the viewpoint of the suspension state of the cleaning agent composition after water dilution. The uniform system is a cleaning agent whose appearance is transparent at 1 to 90 ° C., and the heated cloudy system is a cleaning agent whose appearance is transparent at a temperature lower than the cloud point and becomes cloudy at a temperature above the cloud point. Is. In the water-diluted cleaning agent, the completely cloudy water-diluted cleaning agent generally has a higher ability to remove oil-soluble and water-soluble stains than the uniform type and the heated white turbid type. Has excellent detergency. That is, since the cleaning agent composition of the present invention is a completely cloudy type, it exhibits excellent cleaning property as compared with the above-mentioned uniform type and heated cloudy type water-diluted cleaning agent. Further, the cleaning agent composition of the present invention exhibits particularly excellent cleaning properties even in a completely cloudy system, and corrosion on metals such as aluminum is suppressed.

Since foaming is suppressed, the cleaning agent composition does not overflow from the tank containing the cleaning agent in the cleaning step, and therefore has excellent workability during cleaning. In the present specification, "foaming" means a state in which bubbles formed by mixing liquid and air are formed at a position higher than the liquid surface.

Since the undiluted solution for the cleaning agent composition does not have a flash point, the cleaning agent composition is also classified as a non-dangerous substance under the Fire Service Act without having a flash point, and is easy to handle and has excellent workability.

The pH of the cleaning agent composition at 25 ° C. is preferably about 5 to 9 from the viewpoint of suppressing corrosion of metals such as aluminum.

In the cleaning agent composition, the mixing method of the undiluted solution for the cleaning agent composition and water is not particularly limited, and a general liquid mixing method is used. As a specific mixing method, a stirring method can be mentioned.

The cleaning agent composition is classified according to the cleaning target, and examples thereof include a cleaning agent for flux residue, a cleaning agent for soldering flux, a cleaning agent for solder paste, and a cleaning agent for industrial oil. Further, when classified according to the object to be cleaned, for example, a cleaning agent for electronic materials and the like can be mentioned.

The electronic materials include photomasks, optical lenses, vacuum discharge tubes, touch panels, glass processed products such as glass for display devices, metal masks, pallets, printed circuit boards, flexible wiring boards, ceramic wiring boards, semiconductor elements, semiconductor packages, etc. Metal processed products such as magnetic media, power modules, camera modules, lead frames, magnetic disks, heat sinks, resin processed products such as glass epoxy boards, polyimide boards, paper phenol boards, plastic molded parts, silicon (Si), sapphire (Al) ₂ O ₃ ), silicon carbide (SiC), diamond (C), gallium nitride (GaN), gallium phosphate (GaP), gallium arsenide (GaAs), indium phosphate (InP) and other wafers and their cutting (cutting ( Slicing, dying, etc.), grinding (back grind, blasting, etc.), chamfering (beveling, barrel, etc.), polishing (wrapping, polishing, buffing, etc.) processed products, and processing, mounting, welding, cleaning, etc. Examples include jigs, carriers, magazines, etc. used for transportation.

[Washing target]
The cleaning target in the cleaning agent composition of the present invention is not particularly limited, and examples thereof include soldering flux, solder paste, flux residue, industrial oil, and chips. Among these, one selected from the group consisting of soldering flux, solder paste and flux residue is suitable as a cleaning target in the cleaning agent composition.

In the present specification, the "soldering flux" is a composition used for removing the oxide film on the surface of the solder and the base material (metal electrode, etc.) and facilitating the bonding between the two. Generally, it contains a base resin, an activator and an organic solvent, and may contain a thixotropic agent, an antioxidant and other additives as required. Further, the flux for soldering is classified into a flux for solder paste and a flux for non-solder paste such as a flux for thread solder, a post flux and a pre-flux according to the composition.

Examples of the base resin include rosin-based base resins and non-rosin-based base resins. Examples of the rosin-based base resin include natural rosin, rosin derivatives, and purified products thereof. Examples of natural rosin include gum rosin, tall oil rosin and wood rosin. Rosin derivatives include, for example, hydrides and disproportionates of natural rosin;
Examples thereof include polymerized rosins, unsaturated acid-modified rosins, rosin esters, and hydrogenated unsaturated acid-modified rosins. The polymerized rosin, the unsaturated acid-modified rosin, and the rosin ester can be produced by using the natural rosin, or a hydride or an unisomerized product of the natural rosin. Examples of the polyhydric alcohol constituting the rosin ester include glycerin and pentaerythritol. Examples of the unsaturated acid constituting the unsaturated acid-modified rosin include acrylic acid, fumaric acid, and maleic acid. Non-rosin-based base resins include, for example, epoxy resin, acrylic resin, polyimide resin, nylon resin, polyacrylonitrile resin, vinyl chloride resin, vinyl acetate resin, polyolephine resin, fluororesin, ABS resin, isoprene rubber, and styrene-butadiene rubber ( SBR), butadiene rubber (BR), chloroprene rubber, nylon rubber, nylon-based elastoma, polyester-based elastoma, and the like.

The active agents include, for example, succinic acid, adipic acid, azelaic acid, glutaric acid, sebacic acid, dodecane diic acid, dimeric acid, fumaric acid, maleic acid, itaconic acid, trans-2,3-dibromo-1,4-. Butendiol, cis-2,3-dibromo-1,4-butenediol, 3-bromopropionic acid, 2-bromovaleric acid, 5-bromo-n-valeric acid, 2-bromoisovaleric acid, ethylamine bromate, Examples thereof include diethylamine bromate, diethylamine hydrochloride, methylamine bromate and the like.

Examples of the organic solvent include ethanol, n-propanol, isopropanol, isobutanol, butyl carbitol, hexyl diglycol, hexyl carbitol, isopropyl acetate, ethyl propionate, butyl benzoate, diethyl adipate, n-hexane, and dodecane. , Tetradecane and the like.

Examples of the thixotropic agent include castor oil, hardened castor oil, beeswax, carnauba wax, stearic acid amide, and 12-hydroxystearic acid ethylene bisamide.

The antioxidants include, for example, pentaerythrityl-tetrax [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate] and octadecyl-3- (3,5-di-t-butyl-). 4-Hydroxyphenyl) propionate, N, N'-hexamethylenebis (3,5-di-t-butyl-4-hydroxy-hydrosinamide), 1,3,5-trimethyl-2,4,6-tris (3,5-di-t-butyl-4-hydroxybenzyl) benzene, 2,6-di-t-butyl-p-cresol, triphenylphosphite, triethylphosphite, trilauryltrithiophosphite, tris (tridecyl) ) Phosfight etc. can be mentioned.

Examples of the other additives include antifungal agents, matting agents, thickening inhibitors, surfactants and the like.

As used herein, "solder paste" is a mixture of soldering flux and solder powder. Examples of the solder powder include Sn-Ag-based, Sn-Cu-based, Sn-Sb-based, and Sn-Zn-based lead-free solder powders, and lead-containing solder powders containing lead as a constituent component. Further, these solder metals are doped with one or more elements of Ag, Al, Au, Bi, Co, Cu, Fe, Ga, Ge, In, Ni, P, Pt, Sb and Zn. It may be. The solder paste is supplied onto the electrodes via a metal mask by screen printing, and after the electronic components are placed on the solder paste, soldering is performed under heating.

Examples of the article to which the soldering flux or solder paste is attached include a metal mask for screen printing, a squeegee, a nozzle for a dispense method, a syringe, and a jig for fixing a substrate.

The flux residue is a residue generated after bonding electronic components or the like to electrodes using solder paste, soldering thread, soldering flux, pre-flux, post-flux, or the like. The flux residue needs to be removed by cleaning because it corrodes the solder metal and the base metal and lowers the insulation resistance of the substrate.

Examples of the article to which the flux residue is attached include a printed circuit board, a ceramic wiring board, a semiconductor element mounting board, a wafer, a TAB tape, a lead frame, a power module, a camera module, and the like. As for the corresponding ones, electronic parts such as ICs, capacitors, resistors, diodes, transistors, coils, and CSPs are soldered, BGA, PGA, LGA, etc. are formed, solder leveling, etc. Pretreatment may be applied.

Examples of the industrial oil include processing oil, cutting oil, mineral oil, machine oil grease, lubricating oil, rust preventive oil, wax, pitch, paraffin, oil and fat, grease and the like. In fields such as machining and metal processing, these reduce friction between materials and tools to prevent seizure, reduce the force required for processing to facilitate formation, and prevent product rust and corrosion. Used to rust.

The articles to which the industrial oil is attached include, for example, molded parts such as bolts, nuts, ferrules, and washers, automobile parts such as engine pistons, industrial machine parts such as gears, shafts, sprockets, and chains, and HDD parts. , And electronic parts such as lead frames.

Other cleaning targets include, for example, printed circuit boards, ceramic wiring boards, semiconductor element mounting boards, cover glass, chips generated when dicing a wafer, and the like.

[Washing method]
The method of cleaning the object to be cleaned to which the object to be cleaned is attached by using the cleaning agent composition is not particularly limited, and various known methods can be applied. Specifically, for example, a cleaning method including a cleaning step, a water rinsing step, and a drying step can be mentioned.

The cleaning step is a step of bringing the object to be cleaned into contact with the cleaning agent composition to remove the object to be cleaned. The water rinsing step is a step of bringing the object to be cleaned into contact with the rinse water to remove the cleaning agent composition adhering to the object to be cleaned. The drying step is a step of removing the rinse water adhering to the object to be cleaned.

The means for bringing the cleaning agent composition and the rinse water into contact with the object to be cleaned is not particularly limited, and examples thereof include an immersion stirring method, a submerged shower method, an air shower method, and an ultrasonic cleaning method.

The above-mentioned cleaning agent composition exhibits excellent detergency when mixed and becomes cloudy. Therefore, as a cleaning method, the air shower method is preferable because it has a strong ability to mix the cleaning agent composition and is excellent in cleaning property, productivity and water rinsing property. In the aerial shower method, a cleaning agent having a large amount of foaming cannot be used because it overflows from the tank, but the cleaning agent composition does not overflow from the tank because foaming is suppressed. That is, the cleaning agent composition is suitable for the air shower method.

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. Further, in the examples, "%" and "part" mean "mass%" and "part by mass" unless otherwise specified.

[Preparation of undiluted solution for cleaning agent composition and cleaning agent composition]
Example 1
85 parts of benzyl alcohol (component (A)), 10 parts of di-2-ethylhexylamine (component (B)), and 5 parts of water (component (C)) were mixed to prepare a stock solution for a cleaning agent composition. Then, 400 parts of water was added to 100 parts of the stock solution for the cleaning agent composition to prepare the cleaning agent composition X (concentration of the stock solution for the cleaning agent composition: 20% by mass). Further, 900 parts of water was added to 100 parts of the stock solution for the cleaning agent composition to prepare the cleaning agent composition Y (concentration of the stock solution for the cleaning agent composition: 10% by mass).

Examples 2 to 7 and Comparative Examples 1 to 15 were prepared in the same manner as in Example 1 except that the components were changed to those shown in Tables 1 and 2. The unit of the value in Tables 1 and 2 is the mass part. In the cleaning agent compositions X and Y of Examples 1 to 7, when the cleaning agent compositions were heated to 1 to 90 ° C., the appearance became cloudy at any temperature.

The abbreviation of each component in Table 1, the total number of carbon atoms in the component (B), the number of hydrocarbon groups, and the boiling point (° C.) of each component are as shown in Table 3.

The notes in Table 3 are as follows.
* Substituents on the nitrogen atom include those other than hydrogen atom and hydrocarbon group.

The appearance was evaluated and the flash point was measured using the undiluted solutions for cleaning agent compositions obtained in Examples 1 to 7 and Comparative Examples 1 to 15. Further, using the cleaning agent compositions X obtained in Examples 1 to 7 and Comparative Examples 1 to 15 and the cleaning agent compositions Y obtained in Examples 1 to 7, the detergency and corrosion inhibitory property were evaluated. And the pH was measured. The results are shown in Table 4.

The notes in Table 4 are as follows.
(1) Since the stock solution for the cleaning agent composition was non-uniform, the cleaning agent compositions X and Y were not evaluated.

<Measurement of flash point>
The flash point of the undiluted solution for cleaning agent composition in Table 1 is measured in accordance with JIS K 2265, the flash point in the range from room temperature to 80 ° C is measured by the tag sealing method, and the flash point cannot be measured up to 80 ° C. Was measured by the Cleveland open type.

<Evaluation of appearance>
The undiluted solution for the cleaning agent composition shown in Table 1 was placed in a 50 mL glass container, and the uniformity at 25 ° C. was visually confirmed. In Table 4, "uniform" means that the appearance is transparent and the undiluted solution for the cleaning agent composition is in a completely compatible state. Non-uniformity means that the appearance is cloudy or separated into two layers, an aqueous layer and an oil layer, and the cleaning agent composition stock solution is phase-separated.

<Evaluation of detergency>
(Preparation of test piece for detergency test)
Commercially available lead-free halogen-free solder paste (trade name "Eco-solder paste M705-S70G-HF Type 4") using a metal mask on a copper pattern of a glass epoxy copper-clad laminate (50 x 50 x 1.0 mm thickness) , Senju Metal Industry Co., Ltd.) was printed and reflowed with the following profile to prepare a test substrate to which flux was attached.

(Reflow profile of test board)
Atmosphere: Air heating rate: 1 ° C / sec Peak temperature: 240 ° C, 10 seconds

(Cleanability test)
Using the above test substrate, a detergency test was conducted by the air shower method under the following cleaning and water rinsing conditions. The test substrate was brought into contact with the cleaning liquid compositions X and Y of Table 2 having a liquid temperature of 60 ° C., and washing was performed for 30 seconds or 1 minute. Next, the test substrate was brought into contact with rinse water having a liquid temperature of 25 ° C. and pre-rinsed for 1 minute. Further, the finish was rinsed with running ion-exchanged water for 1 minute. Then, the test substrate was air-blown for 1 minute to remove water and dried. The surface of the test substrate after drying was visually judged based on the following criteria to evaluate the detergency. In the cleaning agent compositions X and Y of Examples 1 to 7, foaming was suppressed in all of the cleaning properties.
⊚: The flux could be removed satisfactorily in both the case where the washing time was 30 seconds and the case where the washing time was 1 minute (the surface area of the flux residue was 0%).
◯: The flux remained when the cleaning time was 30 seconds, but the flux could be removed satisfactorily when the cleaning time was 1 minute (the surface area of the flux residue was 0%).
Δ: When the cleaning time was 1 minute, some flux remained (the surface area of the flux residue was more than 0% and 10% or less).
X: When the cleaning time was 1 minute, a considerable amount of flux remained (the surface area of the flux residue exceeded 10%).

(Conditions for washing and rinsing with air shower method)
Flow rate: 2.3 L / min Pressure: 0.1 MPa
Distance between injection nozzle and test board: 50 cm

<Evaluation of corrosion inhibitory>
An aluminum test panel (Japan Test Panel, A1050P) was brought into contact with the cleaning liquid compositions X and Y of Table 2 having a liquid temperature of 60 ° C. under immersion stirring conditions for 10 minutes. Then, a finishing rinse was performed for 1 minute with running water of ion-exchanged water. Then, the test substrate was air-blown for 1 minute to remove water and dried. The corrosion of the aluminum test panel after drying was visually judged based on the following criteria, and the corrosion inhibitory property was evaluated.
◯: No discoloration or appearance change on the aluminum test panel.
×: The aluminum test panel is discolored or has a change in appearance.

<pH measurement>
Using a pH meter (manufactured by HORIBA, Ltd., trade name "D-54"), immerse the electrodes in the cleaning liquid compositions X and Y of Table 2 at a liquid temperature of 25 ° C., and use a magnetic stirrer to 1 After stirring for a minute, the pH of the cleaning liquid compositions X and Y was measured.

Claims (5)

Includes benzyl alcohol (A), amine compound (B) represented by the following general formula (1), and water (C).
A stock solution for a cleaning agent composition in which the content ratios of the component (A), the component (B) and the component (C) are 70 to 94% by mass, 3 to 20% by mass, and 3 to 10% by mass, respectively.
(1)

(In formula (1), R ¹ , R ² and R ³ each independently represent a hydrogen atom or a hydrocarbon group, whereas at least two of R ¹ , R ² and R ³ represent a hydrocarbon group. , R ¹ , R ² and R ^{3 have} a total carbon number of 12 or more.) The cleaning composition according to claim 1, wherein the component (B) is at least one selected from the group consisting of di (2-ethylhexyl) amine, dioctylamine, triamylamine, dimethyldodecylamine and dibenzylamine. Undiluted solution for physical use. A cleaning agent composition containing 100 to 1500 parts by mass of water with respect to 100 parts by mass of the stock solution for the cleaning agent composition according to claim 1 or 2. The cleaning composition according to claim 3, wherein the pH at 25 ° C. is 5 to 9. The cleaning composition according to claim 3 or 4, which is used for flux residues.