MX2014005300A

MX2014005300A - Cleaning liquid composition.

Info

Publication number: MX2014005300A
Application number: MX2014005300A
Authority: MX
Inventors: Ko Aoyagi
Original assignee: Jx Nippon Oil & Energy Corp
Priority date: 2011-10-31
Filing date: 2012-09-24
Publication date: 2014-11-21
Also published as: JP5893519B2; JP2013117008A; WO2013065432A1; CN104039946A; CN104039946B

Abstract

Provided is a cleaning liquid composition which can clean and remove dirt which comprises lowly polar dirt and highly polar dirt and which is attached to parts used in a variety of industrial fields, such as automobiles, machinery, precision instruments, electrical parts, electronics and optics. The cleaning liquid composition of the present invention contains (A) a straight chain saturated aliphatic hydrocarbon, (B) an anionic surfactant, (C) a non-ionic surfactant and (D) water. The content of component (A) is 60.0 to 85.0 mass % relative to the cleaning liquid composition, the content of component (B) is 8.0 to 15.0 mass % relative to the cleaning liquid composition, the content of component (C) is 2.0 to 5.0 mass % relative to the cleaning liquid composition, the content of component (D) is 1.0 to 20.0 mass % relative to the cleaning liquid composition, the total content of components (B) and (C) is 10.0 to 20.0 mass % relative to the cleaning liquid composition, the content ratio of components (B) and (C) ((B) / (C)) is 2.0 to 5.0, and the saturated water content, as measured by means of the turbidity of a mixed liquid obtained by adding water to a composition comprising the components (A), (B) and (C), is 10 mass % or higher.

Description

LIQUID COMPOSITION OF WASHING Field of the Invention The present invention relates to a liquid washing composition, in particular to a liquid washing composition with the ability to wash and remove a combined contamination of contaminations of low polarity and high polarity deposited in parts handled in various industrial fields including those of automobiles , machinery, precision instruments, electrical parts, electronic parts, optics and the like.

Background of the Invention When the processing of parts handled in various industrial fields, including those of automobiles, machinery, precision instruments, electrical parts, electronic parts, optics and the like (hereinafter referred to as "parts", (i) various oils of processing among those of low polarity, such as oil-based processing oil composed mainly of mineral oil, etc., and a water-soluble processing oil, etc., formed by adding a surfactant to mineral oil, etc., and makes emulsion in water, and (ii) minute particles, and the like are used.In particular, a water-soluble processing oil is often used, mainly for cutting or work of grinding, etc., and for parts that are manufactured through a plurality of processing steps, the processing oil used for each step is different. Therefore, various types of pollution from those of low polarity to those of high polarity are combined and deposited in parts in many cases. Additionally, when the machining work is performed, such as cutting, grinding or polishing, wax is used as an adhesive agent for temporary adhesion to fix the part to a mechanical guide. Then, when the machining work is finished, the wax deposited on the part is removed. Different types of waxes from those of low polarity to those of high polarity, are used depending on the application.

When such parts are washed with various types of contamination from those of low polarity to those of high polarity combined and deposited therein, the chlorinated solvents such as trichlorethylene and methylene chloride, etc., the aqueous washing agents, agents Semi-aqueous washing agents formed by the compound of a water-soluble solvent with an aqueous washing agent, hydrocarbon-based washing agents, alcohol-based washing agents, such as isopropanol, glycol ether-based washing agents, etc. ., are the ones used. However, in the case of using any of the above, it has not been possible to satisfy all the requirements such as detergency, drying properties, safety, economic efficiency, toxicity, etc., against the parts with various types of contamination from those of low polarity to those of high polarity combined and deposited therein.

Furthermore, for the purpose of further improving the characteristics such as detergency, etc., of these washing agents, a washing agent composition composed of diethylene glycol diethylene glycol and 3-methyl-3-methoxy-2-butanol, have been proposed, (for example, see patent document 1). However, because there is no upper limit on the solubility of water, it is necessary to remove the water in order to maintain the detergency, and therefore, it is inferior in economic efficiency.

In addition, a liquid washing composition comprising an aromatic hydrocarbon, a surfactant, and water, has been considered by the inventor of the present invention (for example, see Patent Documents 2 and 3). However, the compositions will still have room for improvement in detergency for high polarity contamination.

LIST OF APPOINTMENTS Patent Literature PTL 1: JP 2011-68858 A PTL 2: JP 2002-256285 A PTL 3: JP 2004-143409 A Brief Description of the Invention (Technical problem) In view of the above, an object of the present invention is to provide a liquid washing composition with the ability to wash and remove the combined contamination of low polarity and high polarity contaminations deposited on the parts.

(Solution to the problem) In order to solve the above problems, the inventors of the present invention have carried out intensive studies and discovered that, by applying a liquid microemulsion type washing composition with a high saturated water content wherein the straight chain saturated aliphatic hydrocarbon having a superior water acceptability capacity that the aromatic hydrocarbon is used as the base and a surfactant is composed with detergency for high polarity contamination, and wash and remove cross contamination from low polarity and high polarity contaminations deposited on the parts. The present invention has been completed based on this discovery.

Specifically, the liquid washing composition of the present invention contains (A) a straight chain saturated aliphatic hydrocarbon, (B), an anionic surfactant, (C) a nonionic surfactant, and (D) water, the content of (To the saturated straight chain aliphatic hydrocarbon being from 60.0% by mass to 85% by mass of the liquid washing composition, the content of (B) of the anionic surfactant being from 8.0% by mass to 15.0% by mass of the liquid washing composition, the content of (C) the nonionic surfactant being from 2.0 mass% to 5.0 mass% of the liquid washing composition, the content of (D) the water, being 1.0 mass% up to 20.0% by mass of the liquid washing composition, the total content of (B), the anionic surfactant and (C) the nonionic surfactant ((B) + (C)) being 10% by weight up to 20.0 % mass of the liquid washing composition, the content ratio of (B) the anionic surfactant and (C) the nonionic surfactant ((B) / (C)) being from 2.0 to 5.0 and the saturated water content measured from turbidity of a mixed liquid formed by adding water to the composition consisting of (A) the aliphatic hydrocarbon ico saturated straight chain, (B), the anionic surfactant and (C) the nonionic surfactant being 10% by mass or more.

If the saturated water content measured from the turbidity of the mixed liquid formed by adding water to the composition consisting of (A) the straight chain saturated aliphatic hydrocarbon, (B) the anionic surfactant, and (C) the nonionic surfactant is 10% by mass or more, the liquid washing composition is returned to a state where the water content is highly dispersed in the hydrocarbon, and the detergency for high polarity contamination is improved while the detergency for low polarity contamination is maintained, and in this way, the washing and removal of contamination deposited on the parts, in particular, the combined contamination of low polarity and high polarity.

In the present specification, "straight chain saturated aliphatic hydrocarbon" refers to a saturated aliphatic hydrocarbon with a branching number of 0.

Additionally, in the present specification, the "Saturated water content" refers to the content of water added to the composition consisting of a straight chain saturated aliphatic hydrocarbon, an anionic surfactant and a nonionic surfactant, when the turbidity (JISK0101) of the mixed liquid formed by adding water to the the composition is 100 NTU (mass% for the mixed liquid of the composition and water). At this point the turbidity of the mixed liquid is measured using a turbidity meter (trade name: Portable Turbidity Meter type 2100P, manufacturer: Central Kagaku Corp.).

For the liquid washing composition, the saturated water content measured from the turbidity of the mixed liquid formed by adding water to the composition consisting of (A) the straight chain saturated aliphatic hydrocarbon, (B) the anionic surfactant, and ( C) the surfactant does not ion, preferably is equal to or more than the content of (D) the water for the liquid washing composition.

With respect to the liquid washing composition, it is preferred that (A) the saturated straight-chain aliphatic hydrocarbon has from 9 to 13 carbon atoms, (B) the anionic surfactant is an ester salt of dialkyl succinic acid, and (C) ) the nonionic surfactant is a fatty acid ester of sorbitan.

(Advantageous Effects of the Invention) In accordance with the present invention, it is possible to wash and remove the combined contamination of contaminations of low polarity and high polarity deposited on the parts.

Brief Description of the Drawings The present invention will be described further below with reference to the accompanying drawings, wherein: Figure 1 is a graph that indicates the relationships between water concentration and turbidity, and the water concentration and the average particle diameter of a micelle, in experimental example 2.

Figure 2 is a photograph of a corrugated cage with tongs used for a water-soluble processing oil wash test.

Figure 3A, is a determination specimen for a washing test of simulated particles, with a criterion of evaluation classified as "Excellent", in a state before washing.

Figure 3B is a determination specimen for a washing test of simulated particles, with an evaluation criterion classified as "Excellent", in a state after washing.

Figure 4A is a determination specimen for a washing test of simulated particles, with an evaluation criterion classified as "Good", in a state before washing.

Figure 4B is a determination specimen for a wash test of simulated particles, with an evaluation criterion classified as "Good", in a state after washing.

Figure 5 is a specimen of an uncleaned product for a wash flow test.

Figure 6 is a determination specimen for a wash flow test, with an evaluation criterion classified as "Excellent" (no residues remained).

Figure 7 is a determination specimen for a wash flow test, with an evaluation criterion classified as "Deficient" (white residues remained).

Detailed description of the invention The embodiments of the present invention will be described with detail later.

(Liquid Washing Composition) The liquid washing composition of the present invention contains at least (A) a straight chain saturated aliphatic hydrocarbon, (B) an anionic surfactant, (C) a nonionic surfactant, and (D) water, and additionally contains other components when it is necessary < (A) Straight chain saturated aliphatic hydrocarbon > The number of carbon atoms of (A) the straight chain saturated aliphatic hydrocarbon is not particularly limited and may be selected as appropriate depending on the application thereof. The number of carbon atoms is preferably from 9 to 13, more preferably from 10 to 13 and particularly preferably from 10 to 12.

If the number of carbon atoms of (A) the straight chain saturated aliphatic hydrocarbon is less than 9, the ignition point of the liquid washing composition may become low and hazards, while if the number of carbon atoms exceeds 13 , the viscosity may increase and the washing efficiency may decrease. Meanwhile, if the number of carbon atoms of (A) the straight chain saturated aliphatic hydrocarbon is within the most preferable range, or the particularly preferred range, it is advantageous from the viewpoint of achieving both safety and washing efficiency.

The alkylbenzene and / or alkylnaphthalene raised more forward as other components can be mixed with (A) the straight chain saturated aliphatic hydrocarbon.

(A) The straight chain saturated aliphatic hydrocarbon is not particularly limited and can be selected as appropriate depending on the application thereof. Examples of mimes include normal heptane (7 carbon atoms), normal octane (8 carbon atoms), normal nonane (9 carbon atoms), normal dean (10 carbon atoms), normal undecano (11 carbon atoms), normal dodecane (12 carbon atoms), normal tridecane (13 carbon atoms), normal tetradecane (14 carbon atoms), normal pentadecane (15 carbon atoms). These can be used alone or in combination of two or more.

Among these, normal dean (10 carbon atoms), normal undecano (11 carbon atoms), and normal dodecane (12 carbon atoms), are preferred from the point of view of achieving both safety and washing efficiency.

-Content of (A) Straight chain saturated aliphatic hydrocarbon- The content of (A) straight chain saturated aliphatic hydrocarbon is not particularly limited, and can be selected as appropriate depending on the application thereof, provided that be 60.0% by mass up to 85.0% by mass of the liquid washing composition. The content thereof, preferably is 75.0% by mass 80. 0% of mass.

If the content of (A) the straight chain saturated aliphatic hydrocarbon is 60.0 mass% or more of the liquid washing composition, it is possible to improve the detergency for low polarity contamination, whereas if the content thereof is 85.0 % mass or mass of the liquid washing composition, it is possible to improve the detergency for high polarity contamination. In addition, if the content of (A) the straight chain saturated aliphatic hydrocarbon is less than 75.0 mass% of the liquid wash composition, the detergency for low polarity contamination may decrease, whereas if the content of the same exceeds 80.0% by mass of the liquid washing composition, detergency for high polarity contamination can decrease. < (B) Anionic Surfactant > (B) The anionic surfactant is not particularly limited and can be selected as appropriate depending on the application thereof. Examples thereof include sulfonates, such as petroleum sulfonate and turkey red oil, sulfuric ester salt, and carboxylate. These can be used alone or in combination of two or more.

Among these, (i) hydrocarbon sulfonate having from 8 to 22 carbon atoms (sulfonate), (ii) sulphated oil having from 8 to 18 carbon atoms (sulfuric ester salt), (iii) alkyl sulfate salt having from 8 to 18 carbon atoms (sulfuric ester salt), (iv) succinates (carboxylates) such as dialkisulfosuccinate ester salt wherein the alkyl group has from 6 to 13 carbon atoms, disal of alkyl sulfosuccinate wherein the alkyl group has from 6 to 13 carbon atoms, disal of polyoxyethylene alkyl sulfosuccinate wherein the alkyl group has from 6 to 13 carbon atoms, are preferred from the viewpoint of emulsion formation W / Or that it can be solubilized stable. In particular, the salt of the dialkisulphosuccinate ester (dialkyl succinic acid ester salt) wherein the alkyl group has from 6 to 13 carbon atoms, such as sodium di (2-ethylhexyl sulfosuccinate is preferably used from the viewpoint of the W / O emulsion formation that can be solubilized stably.

Additionally, if a substance other than, for example, alkylbenzene sulfonate is used as the sulfonate, management is facilitated because it could not be an objective substance of measures for the confirmation of release amounts, etc., of the specific chemicals in the environment (PSTR).

The salt in the present description is, for example, alkali metal salt, alkaline earth metal salt, ammonium salt, alkanolamine salt having from 1 to 5 carbon atoms and the like. Additionally, the acid itself that has not formed the salt, can also be used.

-Content of (B) anionic surfactant- The content of (B) the anionic surfactant is not particularly limited, and can be selected as appropriate depending on the application thereof, provided that this is 8.0% by mass until the 15.0% by mass of the liquid washing composition. The content thereof is preferably from 9.0% by mass to 15.0% by mass.

If the content of (B) the anionic surfactant is 8.0 mass% or more of the liquid washing composition, it is possible to improve the detergency for high polarity contamination, while if the content thereof is 15.0 mass% or less than the liquid washing composition, it is possible to improve the detergency for low polarity contamination. If the content of (B) the anionic surfactant is less than 9.0 mass% of the liquid washing composition, the detergency for high polarity contamination may decrease. < (C) Non-ionic surfactant > (C) The nonionic surfactant is not particularly limited and can be selected as appropriate depending on the application thereof. Examples thereof include polyalkylene glycol, fatty acid ester and the like. These can be used alone or in combination of two or more.

Among these, the fatty acid ester is preferred from the viewpoint of the W / O emulsion formation that can be solubilize stable.

-Polialkylene glycols - The polyalkylene glycols are not particularly limited and may be selected as appropriate depending on the application thereof. Examples thereof include polyoxyethylene polyoxyprolipene block copolymer, polyoxyethylene polyoxypropylene alkyl ether, and the like.

If the polyalkylene glycols are used, it is possible to improve the thermal stability, whereas if the fatty acid ester is used, it is possible to improve the detergency.

Additionally, if a substance other than, for example, polyoxyethylene alkyl ether and polyoxyethylene alkylphenyl ether is used as the polyalkylene glycols, management is facilitated because it could not be a target substance of measures for confirmation of release amounts, etc. ., of the specific chemical substances in the environment (PSTR).

The polyoxyethylene polyoxypropylene block copolymer is preferably a compound represented by HO- (C2H40) a- (C3H60) b- (C2H40) cH, or HO- (C3H60) a- (C2H40) b- (C3H60) cH, with a polypropylene glycol (hydrophobic group) of molecular weight of 3500 or less, with the content of ethylene oxide within the complete molecule of 50 mass% or less. Additionally, it is preferable to "a" is from 2 to 160, "b" is from 10 to 60, and "c" is from 2 to 160.

The polyoxyethylene polyoxypropylene alkyl ether, preferably is a compound represented by R1-0- (C3H60) n- (C2H40) mH, with R1 being an alkyl group having from 6 to 16 carbon atoms, and "n" and "m" being from 2 to 16.

- Fatty Acid Esters - The fatty acid esters are not particularly limited and may be selected as appropriate depending on the application thereof. Examples thereof include sorbitan fatty acid ester, ethylene glycol fatty acid ester, glycerol fatty acid ester, propylene glycol fatty acid ester, polyoxy fatty acid esters and the like. These can be used alone or in combination of two or more.

Among these, the sorbitan fatty acid ester is preferred from the standpoint of the W / O emulsion formation which can be solubilized stably.

-Content of (C) non-ionic surfactant- The content of (C) the non-ionic surfactant is not particularly limited, and can be selected as appropriate depending on the application thereof, provided that this is 2.0% by mass up to 5.0% by mass of the liquid washing composition. The content thereof is preferably 3.0% by mass at 5.0% by mass.

If the content of (C) the non-ionic surfactant is 2. 0% by mass or more of the liquid washing composition, it is possible to improve the detergency for high polarity contamination, while if the content thereof is 5.0 mass% or less of the liquid washing composition, it is possible to improve the detergency for low polarity contamination.

If the content of (C) the nonionic surfactant is less than 3.0 mass% of the liquid washing composition, the detergency for high polarity contamination may decrease. < Mass ratio of (B) anionic surfactant to (C) nonionic surfactant ((B) / (C)) > The mass ratio of (B) the anionic surfactant to (C) the non-ionic surfactant ((B) / (C)) is not particularly limited, and may be selected as appropriate depending on the application thereof provided it is 2. 0 to 5.0 The proportion of mass, preferably is 2.0 to 4. 0 If the mass ratio ((B) / (C)) is 2.0 to 5.0, it is possible to improve the detergency for high polarity contamination.

In addition, if the mass ratio ((B) / (C)) is less than 2.0, the detergency for high polarity contamination may decrease. < Total content of (B) anionic surfactant and (C) nonionic surfactant ((B) + (C)) > The total content of (B) the anionic surfactant and (C) the nonionic ((B) + (C)) nonionic surfactant is not particularly limited, and can be selected as appropriate depending on the application thereof, provided that this is 10.0 mass% to 20.0 mass% of the liquid washing composition. The content thereof, preferably is 12.0% by mass to 20.0% by mass.

If the total content of ((B) + (C)) is 10.0% by mass or more, it is possible to improve the detergency for high polarity contamination, while if the content thereof is 20.0 mass% or less, it is possible to improve detergency for low polarity contamination.

In addition, if the total content ((B) + (C)) is less than 12.0% by mass, the detergency for high polarity contamination may decrease. < (D) Water > The content of (D) the water is not particularly limited, and may be selected as appropriate depending on the application thereof, provided that this is 1.0 mass% to 20.0 mass% of the liquid washing composition . The content thereof is preferably 5.0% by mass to 20.0% by more, more preferably from 5.0% by mass to 15.0% by mass and particularly preferably from 5.0% by mass to 10.0% by mass of the liquid washing composition.

If the content of (D) the water is 1.0 mass% or more of the liquid washing composition, it is possible to improve the detergency for high polarity contamination different from the wax contamination, whereas if the content thereof is the 20.0 mass% or less of the liquid washing composition, it is possible to improve the detergency for low polarity contamination different from the wax contamination.

Additionally, if the content of (D) the water is less than 5.0% by mass of the liquid washing composition, the detergency for wax of high polarity may decrease, while if the content thereof exceeds 15.0 mass% of the liquid washing composition, the stability can deteriorate. Whereas, if the content of (D) the water is within the most preferred range, or the particularly preferred range, it is advantageous from the point of view that it is possible to improve both the detergency for high polarity contamination and the detergency for low polarity contamination.

In addition, if the content of (D) the water is equal to or less than the saturated water content, it is possible to avoid the rinse failure. At this point, the saturated water content is specified by the turbidity (JISK0101), and if this is 100NTU or less, the water content is defined as equal to or less than the saturated water content.

With respect to the detergent composition of the present invention, it is possible to adjust the water content thereof in advance and to use the adjusted detergent composition when brought into contact with the washing object. It is also possible that once a composition having a low water content is adjusted, and the wash agent is used, add additional water as appropriate and adjust the water content before washing. By the method of further adjusting the water content of the wash agent composition at the time of use, it is possible to obtain high detergency while suppressing the variation in quality during storage and transportation. < (E) Other components > (E) The other components are not particularly limited, and may be selected as appropriate depending on the application thereof as long as it is a component that will not impair the effects of the present invention when mixed and added. Examples thereof include other washing components, various additives and the like.

The other washing component is not particularly limited and may be selected as appropriate depending on the application thereof. Examples thereof include, for example, hydrocarbons different from the hydrocarbon specified in the present invention ( for example, alkylbenzenes such as trimethylbenzene, alkylnaphthalenes such as methylnaphthalene, ethylnaphthalene, dimethylnaphthalene), various alcohols, ketone, ester, polyether, chlorine-free hydrofluorocarbon, N-methylpyrrolidone and cyclohexanone and the like.

The additive is not limited in a particular way and may be selected as appropriate depending on the application thereof. Examples include, a corrosion prevention agent, an antioxidant and a preservative.

The corrosion prevention agent is not particularly limited and can be selected as appropriate depending on the application thereof. Examples thereof include: (i) corrosion prevention agents based on fatty acid ester, such as pentaerythritol monoester, sorbitan monooleate; (ii) amine-based corrosion prevention agents, such as amine, amine salt; (iii) corrosion prevention agents based on carboxylic acid, such as aromatic carboxylic acid, alkenyl succinic acid, naphthenic acid salt; (iv) corrosion prevention agents based on organic sulphonic acid, such as petroleum sulfonate; (v) corrosion prevention agents based on organic phosphate ester; and (vi) Oxidation prevention agents based on oxidized paraffin, and the like.

The content of (E) the other component is not limited in a particular way and can be selected as appropriate depending on the application thereof. The content of the preferentially is 10.0 mass% or less, more preferably 5.0 mass% or less, and particularly preferably 1.0 mass% or less of the liquid laundry composition.

If the content of (E) the other component exceeds 10% by mass of the liquid washing composition, the detergency for high polarity contamination may decrease. Whereas if the content of (E) the other component is within the most preferred range, or the particularly preferred range, it is advantageous from the standpoint of the W / O emulsion formation that can be solubilized stably. < Saturated Water Content > The saturated water content is not particularly limited, and can be selected as appropriate depending on the application thereof, provided that it is 10.0 mass% or more of the liquid washing composition. The content thereof is preferably 10% by mass to 35% by mass, and preferably equal to or more than the content of (D) the water to the liquid washing composition.

If the saturated water content is 10.0% mass or more, it is possible to improve the detergency for high polarity contamination.

If the saturated water content is less than 10% of mass, the detergency for high polarity contamination may decrease, while if the content exceeds 35% mass, the detergency for low polarity contamination may decrease.

In addition, if the saturated water content is equal to or more than the content of (D) the water for the liquid washing composition, it is possible to avoid the rinsing failure. < Average Micellar Particle Diameter Formed in Liquid Washing Composition > In the liquid washing composition, the micelle is formed.

The average particle diameter of the micelle (average Z, average particle diameter based on scattered light) is not particularly limited, and can be selected as appropriate, depending on the application thereof. The average particle diameter thereof is preferably 10 nm or smaller.

If the average particle diameter of the micelle exceeds 10 nm, the rinsing failure may occur.

The average particle diameter of the micelle is measured by a device for measuring the zeta potential, the particle diameter and the molecular weight (trade name: Zetasizer Nano, manufacturer: Spectris Co., Ltd.).

Further, if the particle diameter of the micelle of the liquid washing composition is 10 nm or less, the liquid washing composition is considered as a type of liquid.

W / 0 emulsion that can be solubilized. < Method for contacting the Liquid Washing Composition with the Washing Object > The washing can be carried out by contacting the liquid washing composition with a part which is the washing object.

The method of contacting the liquid washing composition with the washing object is not particularly limited and can be selected as appropriate depending on the application thereof. Any known method can be applied.

Specific examples of the method of contacting the liquid washing composition with the washing object include (i) a method for applying the liquid washing composition to the washing object using a sponge impregnated with the liquid washing composition, (ii) ) a method for immersing the washing object in the liquid washing composition and / or using a spray, and the like.

In the immersion method, it is preferable to combine said method with simultaneous agitation, oscillation, ultrasonic waves, or air bubbles and the like, in order to improve the washing effects.

Additionally, because the liquid washing composition contains a surfactant, it is preferred to rinse with a hydrocarbon having a lower boiling point than the straight chain saturated aliphatic hydrocarbon contained in the liquid washing composition, in particular an aliphatic hydrocarbon, after washing the washing object, for the purpose of removing the surfactant and improving the drying properties. EXAMPLES Next, the embodiments of the present invention are described with reference to the Examples. However, the present invention is not limited by those examples.

(Experimental examples 1 to 6) Table 1 shows the water concentration (saturated water content (mass%)) of a mixed liquid obtained by mixing, as shown in Table 1, (A) a hydrocarbon (straight chain saturated aliphatic hydrocarbon: normal undecane , normal dodecane; aromatic hydrocarbon: alkylbenzene (compound: alkylbenzene having 9 to 11 carbon atoms, trade name: EM Clean 2000E, manufacturer: JX Nippon Oil &Energy Corporation), alkylnaphthalene (compound: alkylnaphthalene having 12 to 13 carbon atoms, trade name: EM Clean 5000E, manufacturer: JX Nippon Oil &Energy Corporation)), (B) an anionic surfactant (dialkyl succinic acid ester salt: sodium di (2.ethylhexyl) sulfosuccinate), and (C) a non-ionic surfactant (sorbitan fatty acid ester: sorbitan trioleate) in a screw bottle with a capacity of 30 mL, when the water is added to the mixed liquid until the turbidity of the it reaches 100 NTU.

Additionally, Figure 1 is a graph that indicates the relationships between water concentration and turbidity, and water concentration and average particle diameter of a micelle, in Experimental Example 2.

At this point, the turbidity was measured using a turbidity meter (trade name: portable turbidity meter type 2100P, manufacturer: Central Kagaku Corp.). The average particle diameter of the micelle was measured by a device for measuring the zeta potential, the particle diameter and the molecular weight (trade name: Zetasizer Nano, manufacturer: Spectris Co., Ltd.).

[Table 1] (Examples 1 and 10 and Comparative Examples 1 and 6) The liquid washing compositions formed by the formation of compounds of each component as shown in Tables 2-1 to 2-8 wherein they are subjected to (i) a water-soluble processing oil wash test, (ii) a wash test of simulated particles, (iii) an oil-based processing oil wash test, (iv) a flow wash test, and (v) a saturated water content measurement test (mass%). < (i) Processing Oil Wash Test Soluble in Water > (1) First, the following water-soluble processing oils (i) to (vi) were diluted with distilled water twice (50%). (i) CastrolHysolX (classification: A1-2, manufacturer: BP Japan K.K.) (ii) CastrolAlusolB (classification: A2-2, manufacturer: BP Japan K.K.) (iii) CastrolSyntilo81 (classification: A3-1, manufacturer: BP Japan K.K.) (iv) Chemic Chemicool EA (classification: A1-2, manufacturer: Chemic Co., Ltd.) (v) Chemic Chemicool EX-630 (classification: A3-1, manufacturer: Chemic Co., Ltd.) (vi) Idemitsu Daphne Aquacool CC (classification: A1-1; manufacturer: Idemitsu Kosan Co., Ltd.) (2) Then, a simulated part (corrugated cage with tongs (made of SUS) shown in figure 2) was removed the fat, and then completely submerged in water-soluble processing oils (i) to (vi) , which were diluted, and then dried in air (40 ° C, 3 hours) using a hot air dryer (trade name: SPHH-201, manufacturer: ESPEC Corp.), and then weighed. (3) Then, in a previously determined liquid washing composition, ultrasonic washing (28 kHz, 25 ° C) was performed for 3 minutes using an ultrasonic washing device (trade name: W-113, manufacturer: Honda Electronics Co. , Ltd.), and then rinsing with normal decane was performed by oscillating for 1 minute at a temperature of 25 ° C. (4) The residual oil of the weight was obtained after drying at a temperature of 80 ° C for 20 minutes using a hot air dryer (trade name: SPHH-201, manufacturer: ESPEC Corp.). (5) The evaluation was performed according to the following evaluation criteria. The results are shown in Tables 2-1 and 2-2.

Good: residual oil (amount of oil remaining) is less than 0.001g Deficient: The residual oil (amount of oil remaining) is equal to or greater than 0.001g < (ii) Simulated Particle Wash Test > (1) First, aqueous solutions at 10% by mass of the above water soluble processing oils (iii) and (vi) were prepared. (2) Then, the steel plates (SPCC-SB, JISG3141, 30 mm x 30 mm x 1 mm, polished with # 240) after the grease removal were applied with a drop of the aqueous solutions at 10% by mass of the water soluble processing oils that were prepared. (3) Then, 0.02g of iron powder (electrolytic iron, manufacturer: Kanto Chemical Co., Inc.) was sprayed onto the iron plates applied with 10% by weight aqueous solutions of the water-soluble processing oil, which in turn were flattened and dispersed approximately 5 mm from the edge of the iron plate, and were subsequently dried using a hot air dryer (trade name: SPHH-201, manufacturer: ESPEC Corp.) at a temperature of 120 ° C for 3 hours to prepare the test pieces. (4) The prepared test pieces were placed in a laboratory beaker filled with 50 ml_ of each liquid washing composition at room temperature, and subsequently, ultrasonic washing (45 kHz) was performed using an ultrasonic washing device (commercial name) : W-113, manufacturer: Honda Electronics Co., Ltd.) for 3 minutes. (5) After washing, the test pieces were removed from each of the liquid washing compositions, and the residual iron powder after draining the liquid were visually observed. (6) The evaluation was carried out according to the following evaluation criteria. The results are shown in Tables 2-3 and 2-4.

Excellent: No iron powder was confirmed.

Good: A part of iron dust remained Acceptable: dozens of iron dust remained. Deficient: hundreds of iron dust remained.

Figures 3A and 3B are determination specimens for a washing test of simulated particles, with an evaluation criterion classified as "Excellent". Figure 4A shows the state before washing and Figure 3B shows the state after washing. Figures 4A and 4B are determination specimens for a washing test of simulated particles, with an evaluation criterion classified as "Good". The figure Figure 4A shows the state before washing and Figure 4B shows the state after washing. < (iii) Oil-Based Processing Oil Wash Test > (1) First, the weights of the iron plates (SPCC-SB, JISG3141, 30 mm 30 mm? 1 mm, polished with # 240) are measured after the removal of fat. (2) Then, the measured iron plates were completely submerged in general purpose oil for industrial use (trade name: Latus 150, manufacturer: JX Nippon Oil &Energy Corporation), and subsequently dried using a hot air dryer (trade name: SPHH-201, manufacturer: ESPEC Corp.) at a temperature of 120 ° C for 3 hours, and then, they were cooled to room temperature and then dried. (3) The heavy iron plates were immersed in a laboratory beaker filled with 100 ml of each of the liquid washing compositions at room temperature (without oscillation, without ultrasonic washing, only immersion) for 2 minutes. (4) the submerged iron plates (test pieces) were taken from each of the liquid washing compositions, and immersed in rinsing liquid (normal decan) for 10 seconds. (5) The test pieces were taken out of each rinse liquid, dried using a hot air dryer (trade name: SPHH-201, manufacturer: ESPEC Corp.) at a temperature of 70 ° C for 40 minutes, and the masses of the test pieces were measured. (6) The evaluation was carried out according to the following evaluation criteria. The results are shown in the Tables 2-5 and 2-6.

Good: The removal rate is 99% mass or higher Deficient: The removal rate is less than 99% of mass < (iv) Flow Wash Test > (1) The following solder paste (cream solder) (i) were refluxed on a substrate (ICB-96PU) using a welding apparatus superior reflux desktop (trade name: RF-221, manufacturer: JAPAN PULSE LABORATORIES, INC.) at a temperature of 230 ° C, and the following threads welds (ii) to (vi) were applied on the substrate using soldering iron, were subjected to ultrasonic washing (28kHz) for a period of 2 or 5 minutes using an ultrasonic washing device (trademark: W-113, manufacturer: Honda Electronics Co., Ltd.). Then, the substrates after washing were visually observed using a stereo microscope (trade name: StemiDV4, manufacturer: Cari Zeiss). (i) Paste solder (trade name: M705-330F-42- 10.5, manufacturer: Senju Metal Industry Co., Ltd.) (ii) Welding threads (trade name: Sparkle Solder 70, manufacturer: Senju Metal Industry Co., Ltd.) (íii) Welding Threads (trade name: Sparkle ESC 21, manufacturer: Senju Metal Industry Co., Ltd.) (iv) Welding threads (trade name: RZ21 PF305, manufacturer: Nihon Handa Co., Ltd.) (v) Welding Threads (trade name: S03X7C-56M, manufacturer: Chemic Co., Ltd.) (vi) Welding threads (trade name: LLS219a, manufacturer: Solder Coat Co., Ltd.) (2) The evaluation was carried out according to the following evaluation criteria. The results are shown in Tables 2-7 and 2-8.

Excellent: No waste remained.

Good: they remained waste lightly.

Acceptable: Residues remained in some portions.

Deficient: white residues remained.

In addition, Figure 5 is a specimen of an uncleaned product for a wash flow test. Figure 6 is a determination specimen for a wash flow test, with an evaluation criterion classified as "Excellent" (no residues remained). Figure 7 is a determination specimen for a wash flow test, with an evaluation criterion classified as "Deficient" (white residues remained). < (v) Saturated Water Content Measurement Test (% mass) > Concentration (saturated water content (mass%)) of the mixed liquid obtained by mixing (A) a hydrocarbon, (B) an anionic tense-active, and (C) a non-ionic surfactant so that the mixed liquid has a predetermined concentration as shown in Tables 2-1 to 2-8, from when water is added to the mixed liquid until the turbidity of it reached 100 NTU, they were measured. The measurement results are shown in Tables 2-1 to 2.8. At this point, turbidity was measured using a turbidity meter (trade name: portable turbidity meter type 2100P, manufacturer: Central Kagaku Corp.).

[Table 2-1] ?? [Table 2-3] [Table 2-4] [Table 2-5] ?? [Table 2-7] [Table 2-8] (Examples 11 to 53, Comparative Examples 7 to 40, and Reference Examples 1 to 6.

The liquid washing compositions formed by the formation of compounds of each component as shown in Tables 3-1 to 3-11 where they are subjected to (vi) a wax wash test (copper plate), and (v) ) a measurement test of saturated water content (% mass). < (vi) Wax Wash Test (Agitation) > The washing liquid composition and the wax were mixed at a mass ratio of 95: 5 and stirred at room temperature for 24 hours. The cases where the mixture became transparent and homogeneous are indicated as "Good" and the other cases are indicated as "Deficient" (dissolution test). The results of the evaluation of the dissolution test (agitation) are shown in Tables 3-1 to 3-11. A paraffin wax (trade name: Paraffin wax 135, manufacturer: Nippon Seiro Co., Ltd.) was used as a low polarity wax, Aqua Wax 553 (manufactured by Nikka Seiko Co., Ltd.) was used as a High polarity wax, and Aleo Wax 542M (manufactured by Nikka Seiko Co., Ltd.) was used as a wax of medium polarity at high and low polarities. < (vi) Wax Wash Test (Copper Plate) > The copper plates with wax deposited on the they were immersed in the liquid washing composition, irradiated with ultrasonic waves (28 kHz) for 2 minutes, rinsed with normal dean for 30 seconds, and subsequently, the surface of the copper plates was visually observed. The cases in which there was no wax, etc., are indicated as "Good" and the other cases are indicated as "Deficient" (wash test). The evaluation results of the washing tests are shown in Tables 3-1 to 3-11. A paraffin wax (trade name: Paraffin wax 135, manufacturer: Nippon Seiro Co., Ltd.), Aleo Wax 542M (manufactured by Nikka Seiko Co., Ltd.), and Aqua Wax 553 (manufactured by Nikka Seiko Co., Ltd.) were used as waxes. < (v) Saturated Water Content Measurement Test (% mass) > Concentration (saturated water content (% mass)) of the mixed liquid obtained by mixing (A) a hydrocarbon, (B) an anionic surfactant, and (C) a nonionic surfactant so that the mixed liquid has a predetermined concentration that it is shown in Tables 3-1 to 3-11, from when water is added to the mixed liquid until the turbidity of it reached 10 NTU, were measured. The measurement results are shown in Tables 3-1 to 3-11. At this point, turbidity was measured using a turbidity meter (trade name: portable turbidity meter type 2100P, manufacturer: Central Kagaku Corp.).

[Table 3-1] [Table 3-2] [Table 3-3] [Table 3-4] [Table 3-5] [Table 3-6] [Table 3-7] [Table 3-8] [Table 3-9] In Table 3-9, (B) petroleum sulfonate represents sodium petroleum sulfonate (with a molecular weight of 400), and (B) red turkey oil represents sodium castor oil sulfonate.

[Table 3-10] In Table 3-10, (B) petroleum sulfonate represents sodium petroleum sulfonate (with a molecular weight of 400), and (B) red turkey oil represents sodium castor oil sulfonate.

[Table 3-11] In Table 3-11, (? ') The aromatic hydrocarbon represents an aromatic hydrocarbon containing 99% by weight of alinaphthalene and dimethynaphthalene having from 13 to 14 carbon atoms, with a boiling point varying from 260 ° C. at 275 ° C.

From Tables 2-1 to 2-8, it was found that it is possible to wash and remove cross contamination from low polarity contamination different from wax and high polarity contamination different from wax deposited on the parts if the liquid washing composition of the the present invention contains (A) a straight chain saturated aliphatic hydrocarbon, (B), an anionic surfactant, (C) a nonionic surfactant, and (D) water, the content of (A) straight chain saturated aliphatic hydrocarbon being from 60.0% by weight to 85% by mass of the liquid washing composition, the content of (B) of the anionic surfactant being from 8.0% by mass to 15.0% by mass of the liquid washing composition, content of (C) the nonionic surfactant being from 2.0 mass% to 5.0 mass% of the liquid washing composition, the content of (D) the water, being 1.0 mass% up to 20.0 mass% of the liquid washing composition, the content total of (B), the anionic surfactant and (C) the non-ionic surfactant ((B) + (C)) being from 10% by mass to 20.0% by mass of the liquid washing composition, the content ratio of (B) the anionic surfactant and (C) the nonionic surfactant ((B) / (C)) being from 2.0 to 5.0 and the saturated water content measured from the turbidity of the mixed liquid formed by adding water to the composition consisting in (A) the straight chain saturated aliphatic hydrocarbon, (B), the anionic surfactant and (C) the nonionic surfactant being 10% by mass or more.

Further, from Tables 3-1 to 3-11, it was found that it is possible to wash and remove wax contamination, in particular, combined contamination of low polarity wax and high polarity wax deposited in the parts if the liquid composition of The washing of the present invention contains (A) a straight chain saturated aliphatic hydrocarbon, (B), an anionic surfactant, (C) a nonionic surfactant, and (D) water, the content of (A) the saturated aliphatic hydrocarbon of straight chain being from 60.0 mass% to 85 mass% of the washing liquid composition, the content of (B) of the anionic surfactant being from 8.0 mass% to 15.0 mass% of the washing liquid composition , the content of (C) the nonionic surfactant being from 2.0 mass% to 5.0 mass% of the liquid washing composition, the content of (D) the water, being 1.0 mass% up to 20.0% of mass of the liquid washing composition, the total content of (B), the anionic surfactant and (C) the non-ionic surfactant ((B) + (C)) being 10% of mass up to 20.0% by mass of the liquid washing composition, the content ratio of (B) the anionic surfactant and (C) the nonionic surfactant ((B) / (C)) being from 2.0 to 5.0 and the water content Saturated measured from turbidity of the mixed liquid formed by adding water to the composition consisting of (A) the straight chain saturated aliphatic hydrocarbon, (B), the anionic surfactant and (C) the nonionic surfactant being 10% by mass or more.

Industrial Application The liquid washing composition of the present invention is preferably used to wash and remove combined contamination from low polarity and high polarity contaminations deposited in managed parts in various industrial fields including those of automobiles, machinery, precision instruments, electrical parts, electronic parts and optical and similar.

Claims

1. A liquid washing composition containing (A) a straight chain saturated aliphatic hydrocarbon, (B), an anionic surfactant, (C) a nonionic surfactant, and (D) water, the content of (A) the saturated aliphatic hydrocarbon straight chain being from 60.0% by mass to 85% by mass of the liquid washing composition, the content of (B) of the anionic surfactant being from 8.0 mass% to 15.0 mass% of the liquid washing composition, the content of (C) the non-ionic surfactant being from 2.0 mass% to 5.0 mass% of the liquid washing composition, the content of (D) the water, with 1.0% of the mass up to 20.0% of the mass of the liquid washing composition, the content of (B), the anionic surfactant and (C) the nonionic surfactant ((B) + (C)) being from 10% by mass to 20.0% by mass of the liquid washing composition, the content ratio of (B) the anionic surfactant and (C) the nonionic surfactant ((B) / (C)) being from 2.0 to 5.0 and the saturated water content measured from turbidity of a mixed liquid formed by adding water to the composition consisting of (A) the straight chain saturated aliphatic hydrocarbon, (B), the anionic surfactant and (C) the nonionic surfactant being 10% of mass or more.

2. The liquid washing composition as described in claim 1, further characterized in that the saturated water content measured from the turbidity of the mixed liquid formed by adding water to the composition consisting of (A) the saturated aliphatic hydrocarbon chain straight, (B) the anionic surfactant, and (C) the nonionic surfactant, is equal to or more than the content of (D) the water for the liquid washing composition.

3. The liquid washing composition as described in claim 1, further characterized in that (A) the straight chain saturated aliphatic hydrocarbon has from 9 to 13 carbon atoms, (B) the anionic surfactant is an ester salt of dialkylsuccinic acid, and (C) the nonionic surfactant is a sorbitan fatty acid ester .