JPH06313192A - Detergent composition - Google Patents

Abstract

PURPOSE:To obtain a detergent compsn. excellent in capability of cleaning org. and inorg. dirt components and in foam breaking properties by combining a specific solvent, a fatty acid salt, and an acetylene-base nonionic surfactant. CONSTITUTION:This detergent compsn. contains a solvent of formula I (wherein R1 is 1-9C alkyl, alkenyl, or alkylphenyl; R2 is H, 1-4C alkyl, or alkenyl; A1 is 2-4C alkylene; and (m) is 1-20) (e.g. an ethylene oxide adduct to buthanol), a fatty acid salt of formula II (wherein R3 is a 10-24C hydrocarbon chain provided it may have double bonds or hydroxyl groups; and M is an alkali or alkaline earth metal, ammonia, or an alkanolamine) (e.g. monoethanolamine salt of lauric acid), and an acetylene-base nonionic surfactant of formula III (wherein R4 and R5 are each 1-8C hydroxyalkyl, hydroxyalkenyl, H, etc.) (e.g. a compd. of formula IV).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-based cleaning agent which is useful for cleaning electronic parts and the like, and which is an alternative to CFC-based solvents and chlorine-based solvents.

[0002]

2. Description of the Related Art Higher cleaning performance in cleaning precision parts, metal products for electronic parts such as jigs and tools used in the assembly process, and electronic parts such as liquid crystal cells, printed circuit boards, integrated circuits and shadow masks. Is required, and it is also desired to highly clean more parts with a certain cleaning agent from the viewpoint of economy and the like.

For example, in precision metal parts used in the manufacture of electronic machines, it is inevitable that stains such as oil and fat, machining oil, and grease will adhere during the processing, treatment, and assembly, and these pollutants are A high degree of degreasing cleaning is required because it has a great impact on the performance of the final product.

Freon solvents and chlorine solvents have been mainly used for cleaning in these fields. However, these solvents have excellent degreasing and cleaning ability, but on the other hand, they are concerned about the safety to the environment, and in recent years, the demand for an aqueous cleaning agent is increasing.

At the same time, the quality required for the performance of the water-based cleaning agent has been gradually improved. For example, when classifying the types of dirt adhering to electronic parts, organic compound-based dirt represented by machining oil such as cutting oil, press oil, and lubricating oil, and cutting chips, abrasives, etc. are represented. Inorganic compound-based stains. Conventional CFC / chlorine solvents and general degreasing detergents can be used to clean organic compound-based stains, but these degreasing detergents have satisfactory cleaning performance for inorganic compound-based stains. Was not obtained. For water-based cleaning agents, various cleaning methods such as ultrasonic cleaning, rocking cleaning, stirring cleaning, submerged jet cleaning, and high pressure spray cleaning are generally applied according to the shape, material, size, etc. of the object to be cleaned. To be done. Therefore, it is necessary for the water-based cleaning agent to be compatible with all of these cleaning methods, and in particular, in the high pressure spray cleaning, if problems occur in foamability, it becomes unusable. The following are conventional techniques for disclosing a part of the components in the composition of the present invention, but none of them suggest the present invention.

(1) Japanese Unexamined Patent Publication No. 2-16200: A cleaning agent for grease or the like, which comprises a nonionic surfactant, a higher fatty acid salt, a polyhydric alcohol, a non-water-soluble organic solvent such as kerosene, and water.

(2) Japanese Patent Application Laid-Open No. 5-51599: A low-foaming detergent for purine substrates containing polyoxyethylene phenyl ether, acetylene oxide adduct, glycol ether and water.

[0008]

We are a complete water-based cleaning agent that does not impair degreasing power, has excellent cleaning performance against inorganic compound-based stains, and can withstand high pressure spray cleaning. Diligent research was conducted with the aim of developing a foamy cleaning agent.By using a solvent of an alkylene oxide adduct of a lower alcohol or phenol, a fatty acid salt, and an acetylene-based nonionic surfactant in combination, stains of organic compounds It was found that not only the components but also the inorganic compound-based stain components can be washed without any problems, and further, a composition which is excellent in foam breaking property and in which foaming trouble does not occur during cleaning can be realized, and the present invention has been completed. It was

[0009]

The detergent composition of the present invention is characterized by containing the following components (A), (B) and (C).

(A) Solvent represented by the general formula (I)

Embedded image R ₁ O (A ₁ O) nR ₂ (I) (R ₁ : alkyl group having 1 to 9 carbon atoms, alkenyl group, alkylphenyl group R ₂ : hydrogen atom or alkyl having 1 to 4 carbon atoms Group, alkenyl group A ₁ : alkylene group having 2 to 4 carbon atoms m: number of 1 to 20)

(B) Fatty acid salt represented by the general formula (II)

Embedded image R ₃ —COOM (II) (R ₃ represents a hydrocarbon chain having 10 to 24 carbon atoms, and may have a double bond or a hydroxyl group as a substituent therein M: alkali metal, Indicates salts with alkaline earth metals, ammonia or alkanolamines)

(C) An acetylenic nonionic surfactant represented by the general formula (III)

Embedded image R ₄ —C≡C—R ₅ (III) (One or both of R ₄ and R ₅ is a hydroxyalkyl group having 1 to 8 carbon atoms, a hydroxyalkenyl group or an alkylene oxide having 0 to 10 carbon atoms. Is a group added by moles,
Either R ₄ or R ₅ may be a hydrogen atom)

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The solvent of the general formula (I) of the component (A) is a saturated or unsaturated fatty acid alcohol having 1 to 9 carbon atoms, preferably 1 to 6 carbon atoms, or an alkylene oxide adduct of alkylphenol or an alkylated product thereof. And R ₁ in the general formula (I) is an alkyl group having 1 to 6 carbon atoms,
A saturated alcohol in which R ₂ is hydrogen (R ₂ = H) or an alkylene oxide adduct of a terminal ether compound having 1 to 3 carbon atoms (R ₂ = C ₁ -C ₃ alkyl) is preferable. As the alkylene oxide, ethylene oxide, propylene oxide or butylene oxide may be used alone or in a mixture of 1 in total.
-20 mol, preferably 1-10 mol are added. As the alkylene oxide, ethylene oxide and propylene oxide are preferable. The solvent as the component (A) is preferably contained in the composition in an amount of 1 to 70% by weight, more preferably 5 to 50% by weight.

The component (B) fatty acid salt has 11 to 2 carbon atoms.
Alkali metal salts, alkaline earth metal salts, ammonium salts or alkanolamine salts of saturated or unsaturated fatty acids of 5, which may be substituted with a hydroxyl group such as 12-hydroxystearate or ricinoleate. The fatty acid salt as the component (B) is preferably contained in the detergent composition of the present invention in an amount of 1 to 70% by weight, preferably 5 to 50% by weight.

The acetylene type nonionic surfactant as the component (C) is represented by the following general formula (III).

Embedded image R ₄ —C≡C—R ₅ (III) (One or both of R ₄ and R ₅ is a hydroxyalkyl group having 1 to 8 carbon atoms, a hydroxyalkenyl group or an alkylene oxide having 0 to 10 carbon atoms. Is a group added by moles,
Either one of R ₄ and R ₅ may be a hydrogen atom.) Specific examples of this acetylene-based nonionic surfactant include the following general formulas (III-1) and (III-2). However,
This is not intended to limit the structure of the hydroxyalkyl or alkenyl group.

[0016]

[Chemical 8] (R _6, R _7: hydrogen or a C 1-7, preferably 1
4 alkyl or alkenyl group A _3, A _4: 2 to 4 carbon atoms, preferably an alkylene group of 2 to 3 p, q: an alkylene oxide _{(A 3 O, A 4 O} ) represents the molar number of addition, 0 A number from -10, preferably 0-5. However, the same alkylene oxide may be added alone, or those having different carbon numbers may be mixed and added.)

The component (C), the acetylenic nonionic surfactant, is preferably contained in the composition of the present invention in an amount of 1 to 70% by weight, preferably 5 to 50% by weight.
(C) component acetylene-based nonionic surfactant and (B)
By blending together with the component fatty acid salt, the cleaning performance can be improved, and especially the foam breaking property of the foam can be synergistically improved, and troubles due to foaming during cleaning can be prevented. The weight ratio of the component (B) and the component (C) is (B) / (C).
= 1/10 to 10/1 in the composition of the present invention is preferable, and more preferably (B) / (C) =
It is 1/5 to 5/1.

Further, the composition of the present invention may contain a nonionic surfactant other than the acetylene nonionic surfactant. Specific examples thereof include polyoxyethylene lauryl ether and polyoxyethylene. Polyoxyethylene alkyl ether such as oleyl ether, polyoxyethylene nonylphenyl ether, polyoxyethylene alkylphenyl ether such as polyoxyethylene octylphenyl ether, polyoxyethylene polyoxypropylene block polymer, polyoxysorbitan fatty acid ester, polyoxyethylene Examples thereof include fatty acid ester and polyoxyethylene alkylamine. These can be used alone, but usually two or more kinds are used in combination. Among the above nonionic surfactants, polyoxyethylene alkyl ethers and polyoxyethylene alkyl phenyl ethers represented by the general formula (IV) shown below are preferable.

[0019]

Embedded image R ₇ —O— (A ₅ O) m—H (IV) (R ₇ : alkyl or alkenyl group having 10 to 18 carbon atoms or 12 to 25 carbon atoms (including benzene ring)
Alkyl phenyl group in which A _2: 2 to 4 carbon atoms, preferably an alkylene group of 2 to 3 m: ethylene oxide, propylene oxide, indicates that the butylene oxide is alone or in combination, 5
25, preferably a number from 7 to 15)

The above-mentioned nonionic surfactant other than the acetylene-based nonionic surfactant is preferably incorporated in the detergent composition of the present invention in an amount of 1 to 70% by weight, preferably 5 to 50%. % By weight. The detergent composition of the present invention contains the above-mentioned three essential components (A), (B), and (C) and, in some cases, a nonionic surfactant other than an acetylene-based compound added as an optional component in a total amount. As 50-70% by weight
It is preferable to include.

Further, amines and quaternary ammonium hydride can be blended in the detergent composition of the present invention. Here, as the amines, alkylolamines such as monoethanolamine, diethanolamine, triethanolamine, dimethylethanolamine and dibutylethanolamine; morpholines such as morpholine and ethylmorpholine; piperazine and triethyldiamine,
Examples include pentamethyldiethylenetriamine and tetramethylpropylenediamine. In addition, as the quaternary ammonium hydrides, compounds represented by the general formula (V) in Chemical formula 10 below are typical.

[0022]

[Chemical 10] (R ₃ ~R _6: hydrogen, an alkyl group having 1 to 4 carbon atoms, a hydroxyalkyl group or an alkenyl group)

Specific examples of the quaternary ammonium hydrides include tetramethylammonium hydride,
Examples thereof include tetrabutylammonium hydride and hydroxyethyltrimethylammonium hydride. Further, in the detergent composition of the present invention, alcohols, glycols, benzenesulfonic acids, or rust preventives such as benzotriazole for maintaining liquid stability can be added. The detergent composition of the present invention can be used as it is, but it is usually diluted with ion-exchanged water or the like to 5 to 30% by weight.

[0024]

According to the present invention, a detergent composition comprising a specific solvent as the component (A), a specific fatty acid salt as the component (B), and an acetylene-based nonionic surfactant as the component (C). As a result, it shows excellent cleaning performance for both organic compound-based inorganic components and inorganic compound-based contaminants, and since it has excellent defoaming properties, it does not cause foaming obstacles even in high-pressure spray cleaning. Occurrence is prevented.

[0025]

EXAMPLES The cleaning compositions of Examples and Comparative Examples shown in Table 1 were prepared and diluted with ion-exchanged water to 20% by weight to prepare test solutions. Using this test solution, the detergency and defoaming property were evaluated by the following methods, and the results are shown in Table 1.

(1) Method of evaluating detergency A polishing plate made of alumina / fatty acid / mineral oil was melted and adhered onto an aluminum test piece to prepare a dirt plate, which was washed under the following washing conditions. Cleaning conditions: 1000 ml of test agent, 40 ° C., 28 KHz ultrasonic cleaning for 30 seconds, rinse shower 30 seconds, drying at 105 ° C. constant temperature bath Test piece after cleaning was microscope (Olympus)
And the degree of cleaning of the abrasive was visually determined according to the following criteria to obtain the cleaning power. ⊚: No residue ∘: Very small amount remained Δ: Remaining considerably ×: Remained ○ Passed above

(2) Method for evaluating foam breaking property 20 ml of the prepared test liquid is dispensed into a 100 ml Epton tube. Using a 40 ° C constant temperature bath, shake the foam vigorously up and down 50 times while keeping the temperature constant, measure the amount of foam (ml) after 1 minute, and evaluate the foam breaking property according to the following criteria. To do. ⊚: Rapidly defoaming ○: Foaming degrading Δ: Slowly defoaming ×: Very slow defoaming ○ Passed above.

[0028]

[Table 1]Example Comparative example Sample No. 1 2 3 4 5 6 7 8 1 2 3 4 Composition (wt%): C₂H_Five-O (EO)₂-C₂H_Five40 − − 15 − − 10 40 20 − − − C_FourH₉-O (EO)₁-(PO)₂-H *¹− 30 − 15 50 60 10 10 − 20 − 20 C ₉ H ₁₉ -O (EO) ₈ -H − − 30 − − − 10 − − − − − Lauric acid-MEA *²Salt 5 − − − − − 5 − − − − − Myristic acid MEA salt − − 5 − − − − 1 − − − − Oleic acid MEA salt − − − − − 10 − − − − − − Ricinoleic acid MEA salt − 5 − 5 10 − 5 10 − 10 10 − Acetylene activator 1 *³5 5 − 5 10 10 − − − − 10 10 Acetylene activator 2 * ⁴ − − 5 5 − − 10 20 − − − − POE (10) alkyl (C₉) 20 30 − 15 15 10 10 − 30 30 30 30 Phenol ether *^Five  POE (8) lauryl ether 10-30 15 15 10 10-10 10 10 10 Ion-exchanged water 20 30 30 25 0 0 30 19 40 30 40 30 Evaluation: Detergency ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ○ △ ○ △ ○ Bubble breaking ◎ ◎ ○ ◎ ◎ ◎ ◎ ○ ◎ × × ◎ △ * 1) 1 mol of butanol ethylene oxide (EO)
And 2 mol adduct of propylene oxide (PO) * 2) MEA: monoethanolamine * 3) Non-ionic acetylene system represented by Chemical formula 11
Surface-active agent

[0029]

[Chemical 11] * 4) Acetylene-based nonionic field represented by Chemical formula 12
Surface-active agent

[0030]

[Chemical 12] * 5) POE is the number of moles of ethylene oxide added.

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Claims (1)

[Claims] 1. A cleaning composition comprising the following components (A), (B) and (C). (A) Solvent represented by the general formula (I) of Chemical Formula 1 R ₁ O (A ₁ O) nR ₂ (I) (R ₁ : an alkyl group, an alkenyl group or an alkyl group having 1 to 9 carbon atoms. Phenyl group R ₂ : hydrogen atom or alkyl group having 1 to 4 carbon atoms, alkenyl group A ₁ : alkylene group having 2 to 4 carbon atoms m: number of 1 to 20) (B) In general formula (II) A fatty acid salt represented by: R ₃ —COOM ... (II) (R ₃ : represents a hydrocarbon chain having 10 to 24 carbon atoms, and may have a double bond or a hydroxyl group as a substituent therein. Is a salt of an alkali metal, an alkaline earth metal, ammonia or an alkanolamine. (C) An acetylene-based nonionic surfactant represented by the general formula (III) of Chemical formula 3 embedded image R ₄ —C≡C _{-R 5 ... (III) (R} 4, one or both of R ₅ is hydrate having 1 to 8 carbon atoms Kishiarukiru group, hydroxy alkenyl group or an alkylene oxide thereto is 0 to 10 mol added to the group,
Either R ₄ or R ₅ may be a hydrogen atom)